Nils-Kåre Birkeland
Position
Emeritus, Professor
Affiliation
- nils.birkeland@uib.no
- Phone number
- +47 55582657
- 90066529
- Visitor address
-
Thormøhlens gate 53 A/B
5006 Bergen - Room: 2H07
- Postal address
-
P.O. Box 7803NO-5020 BergenNorway
Nils-Kåre Birkeland
Position
Emeritus, Professor
Affiliation
Research
My interests include environmental and molecular microbiology, and evolution and adaptations of prokaryotes. Current research activities involve thermophilic bacteria and archaea, metagenomics in extreme environments, extremophilic methane oxidition, and enteropathogenic bacteria in tropical fresh-waters. Present work aims at (1) identifying molecular adaptations to extreme temperatures using extremophilic microorganisms from a variety of environments, (2) enhance our understanding of the enourmous natural microbial diversity in extreme habitats, (3) elucidation of mechanisms and regulation of biological methane oxidation, (4) metagenomics, and (5) to obtain knowledge about the survival and evolution of Shigella-like bacteria.
Teaching
Publications
Conference poster
- Munavvara Dzhuraeva; Nils Kåre Birkeland; Bobodzhanova Kh (2025). Thermophilic keratinolytic bacteria from Tajikistan hot springs: potential for feather biowaste valorization. (external link)
- Nannan Yang; IH Steen; Solveig Karlsen et al. (2004). Isocitrate dehydrogenases from various organisms: a model system to study structural basis of biological adaptations to extreme temperatures. (external link)
- Fatema Moni Chowdhury; Mohammed Ziaur Rahman; Sirajul islam Khan et al. (2011). Evaluation and protective efficacy of a Shigella-like environmental strain as promising vaccine candidate against shigellosis. (external link)
- Selina Akter; Kazi Sabrina Afreen; Mazharul Islam et al. (2010). Survivability and changes in Escherichia coli exposed to tropical freshwater environment. (external link)
- Selina Akter; Mazharul Islam; Kazi Sabrina Afreen et al. (2010). Monitoring of diarrheagenic Escherichia coli in the aquatic environment of Bangladesh. (external link)
- Juan M. Gonzalez; Nils-Kåre Birkeland; Antonio Garcia-Moyano et al. (2018). Thermostable Isomerase Processes for Biotechnology. (external link)
- Fatema Moni Chowdhury; Mohammed Ziaur Rahman; Sirajul islam Khan et al. (2009). Evaluation of Shigella-like environmental strains as possible vaccine candidates against shigellosis. (external link)
- Nils-Kåre Birkeland; Hilde Ånensen; Wenche Kristoffersen et al. (2002). Cold-active methylpurine DNA glycosylase of the hyperthermophilic Archaeon Archaeoglobus fulgidus. (external link)
- Ingeborg Knævelsrud; Svein Bjelland; Nils-Kåre Birkeland (2000). Uracil-DNA glycosylase from the hyperthermophilic archaeon Archaeoglobus fulgidus. (external link)
- Håkon Dahle; Torleiv Lien; Marit Madsen et al. (2000). Characterisation of a new bacterial strain from the order Thermotogales, isolated from an oil-producing well in the North Sea. (external link)
- Armine Margaryan; Nils-Kåre Birkeland; Hovik Panosyan et al. (2013). Bacterial diversity in the Alaverdi Copper Smelter (Armenia). (external link)
- Hovik Panosyan; Nils-Kåre Birkeland (2014). Bacterial diversity of geothermal springs of Armenia and Nagorno-Karabakh. (external link)
- Hovik Panosyan; Nils-Kåre Birkeland (2013). Phylogenetic diversity of endospore-forming thermophilic bacilli isolated from geothermal springs in Armenia. (external link)
- Hovik Panosyan; Armine Margaryan; Nils Kåre Birkeland (2023). Karvachar geothermal spring as a source of Anoxybacillus karvacharensis sp. nov.. (external link)
- Armine Margaryan; Diana Ghevondyan; Hovik Panosyan et al. (2022). KAVART ACID TAILING AS A SOURCE FOR NEW METAL RESISTANT BACTERIA WITH A HEAVY METAL BIOREMEDIATION POTENTIAL. (external link)
- Oddmund Johan Emmerhoff; Nils-Kåre Birkeland (1998). Chaperonins from the hyperthermophilic archaeon <I>Archaeoglobus fulgidus</I>. (external link)
- Runar Stokke; Nils-Kåre Birkeland (2003). Characterization of isocitrate dehydrogenase from two moderate thermophiles , Methylococcus capsulatus and Thermoplasma acidophilum. (external link)
- Frøydis Garshol; Håkon Dahle; Marit Madsen et al. (2003). Analysis of microbial communities associated with deep North Sea oil-wells using culture-dependent and culture-independent strategies. (external link)
- Ingeborg Knævelsrud; Nils-Kåre Birkeland; Svein Bjelland (2003). Afung represents the principal uracil DNA glycosylase enzyme present in the hyperthermophilic archaeon Archaeoglobus fu. (external link)
- Nils-Kåre Birkeland; Hilde Ånensen; Wenche Kristoffersen et al. (2002). Cold-active methylpurine DNA glycosylase of the hyperthermophilic archaeon Archaeoglobus fulgidus. (external link)
- Ani Saghatelyan; Hovik Panosyan; Armen H. Trchounian et al. (2015). Bacterial diversity of geothermal springs in Nagorno-Karabakh. (external link)
- Ingar Leiros; Marivi P. Nabong; Gyri Teien Haugland et al. (2006). Excision of 1-methyladenine and 3-methylcytosine from DNA by AfAlkA of Archaeoglobus fulgidus.. (external link)
- Ole Christian Bjørgo; Håkon Dahle; Torleiv Lien et al. (1999). Isolation and characterization of two <I>Petrotoga</I>-like isolates from a North Sea oil-producing well. (external link)
- Svein Bjelland; Ingeborg Knævelsrud; Gyri Teien Haugland et al. (2005). Excision of dUMP from DNA by the hyperthermophilic archaeon Archaeoglobus fulgidus.. (external link)
- Ingeborg Knævelsrud; Gyri Teien Haugland; Nils-Kåre Birkeland et al. (2004). Excision of dUMP from DNA by the hyperthermophilic archaeon Archaeoglobus fulgidus.. (external link)
- N Yang; Ida Helene Steen; S Karlsen et al. (2004). Isocitrate dehydrogenases from various organisms: a model system to study structural basis of biological adaptations to extreme temperatures. (external link)
- Runar Stokke; Ida Helene Steen; Mikael Karlstrøm et al. (2004). Investigation of factors involved in thermostability of isocitrate dehydrogenase from the hyperthermophilic archaeon Aeropyrum pernix. (external link)
- Munavvara Dzhuraeva; Nils Kåre Birkeland; Bobodzhanova Kh (2025). Novel Thermobaculum Strains from High-Altitude Geothermal Springs in Tajikistan. (external link)
- Nannan Yang; Solveig Karlsen; Ida Helene Steen et al. (2005). 1.75 Å crystal structure of isocitrate dehydrogenase from Desulfotalea psychrophila. (external link)
- Tajul Islam; Øivind Larsen; Sigmund Jensen et al. (2006). THE DIVERSITY OF METHANOTROPHIC LANDFILL SOIL COMMUNITIES ASSESSED BY CULTURE-DEPENDENT AND CULTURE-INDEPENDENT APPROACHES. (external link)
- Ingeborg Knævelsrud; Svein Bjelland; Nils-Kåre Birkeland (2001). Uracil-DNA glycosylase from the hyperthermophilic archaeon Archaeoglobus fulgidus. (external link)
- Irene Stranden; Nils-Kåre Birkeland (2002). Functional analysis of uncharacterized ORF's in Escherichia coli by insertion mutagenesis and construction of conditional mutants. (external link)
- Ture Mortensen; Nils-Kåre Birkeland (2001). Archaeoglobus fulgidus expresses two types of translation initiation factor 2, a bacterial (IF2) and a eukaryal (eIF2) homolog. (external link)
- Margarita Stoilova-Disheva; Dimitrina Lyutskanova; Ivanka Boyadzhieva et al. (2016). Phylogenetic analyses reveal a novel and extremely diverse archaeal community in the Vlasa hot spring,Velingrad, Bulgaria. (external link)
- Nils-Kåre Birkeland; Hovik Panosyan (2012). Cooperation in environmental microbiology between Armenia and Norway. (external link)
- Jennifer Littlechild; Misha Isupov; Christopher Sayer et al. (2015). THERMOGENE- Novel thermostable enzymes for industrial biotechnology. (external link)
- Anita-Elin Fedøy; Nannan Yang; Hanna-Kirsti S. Leiros et al. (2006). Biochemical and structural basis of cold-adaptation in isocitrate dehydrogenase from Desulfotalea psychrophila. (external link)
- Mohammed Ziaur Rahman; Nafisa Azmuda; Salina Akhter et al. (2008). SHIGELLA-LIKE BACTERIA FROM BANGLADESHI AQUATIC ENVIRONMENTS PROVIDE POSSIBLE SHIGELLOSIS VACCINE CANDIDATES. (external link)
- Mohammed Ziaur Rahman; Munawar Sultana; Sirajul islam Khan et al. (2006). Serological cross-reactivity of environmental isolates of Enterobacter, Escherichia, Stenotrophomonas and Aerococcus with Shigella spp. specific antisera. (external link)
- Chandini Murarilal Ratnadevi; Thomas Kruse; Nils-Kåre Birkeland (2018). Methane oxidation by thermoacidophilic Methylacidiphilum kamchatkense strain Kam1. (external link)
- Tajul Islam; Øivind Larsen; Nils-Kåre Birkeland (2007). A novel thermophilic type I methane-oxidizing bacterium from heated soil in Bangladesh. (external link)
- Michael Karlstrøm; Ida Helene Steen; Gudrun Tibbelin et al. (2003). X-ray structure analysis of isocitrate dehydrogenase from the hyperthermophile Aeropyrum pernix. (external link)
- N.A. Chernyh; T.G. Sokolova; I.V. Subbotina et al. (2003). Phylogenetic diversity of thermophilic prokaryotes in Se-reducing enrichment cultures from Mono Lake, California. (external link)
- Nils-Kåre Birkeland; Helge Erikstad; Jeffrey Keen et al. (2010). Methane oxidation by thermo-acidophilic Verrucomicrobia. (external link)
- Sudeep Karki; Antonio Garcia-Moyano; Sayer Chris et al. (2015). Structural studies, substrate identification and activity of sugar aminotransferase enzymes from thermophilic (meta)genomes. (external link)
- Håkon Dahle; Marit Steine Madsen; Frøydis Garshol et al. (2005). Molecular and Culture-Based Analysis of Bacteria and Archaea from a North Sea Oil-Reservoir. (external link)
- Nozomi Sakakibara; Gyri Teien Haugland; Nils-Kåre Birkeland et al. (2008). A comparison of the Methanothermobacter thermautotrophicus and Thermoplasma acidophilum MCM helicases.. (external link)
- Svein Bjelland; Ingeborg Knævelsrud; Gyri Haugland et al. (2005). Excision of dUMP from DNA by the hyperthermophilic archaeon Archaeoglobus fulgidus. (external link)
- Ida Helene Steen; Nils-Kåre Birkeland; Torleiv Lien (1999). <I>Archaeoglobus fulgidus</I> Isocitrate Dehydrogenase, Malate Dehydrogenase and Glutamate Dehydrogenase. (external link)
- Juan M. Gonzalez; Nils-Kåre Birkeland; Antonio Garcia-Moyano et al. (2017). Thermostable Isomerase Processes for Biotechnology. (external link)
- H. Ogino; S Ishino; K. Mayanagi et al. (2013). Acitivation mechanism of the replicative hekicase in the thermophilic archaeon, Thermoplasma acidophilum. (external link)
- Munavvara Dzhuraeva; Bobodzhanova Kh; Nils Kåre Birkeland (2025). Microbial diversity and biotechnological potential of high-altitude geothermal springs in Tajikistan. (external link)
- Nafisa Azmuda; Md. Fakruddin; M Moniruzzaman et al. (2011). Bacterial community profiling in a tropical aquatic system in Bangladesh with emphasis on Escherichia coli. (external link)
- Nafisa Azmuda; Md. Fakruddin; Mohammed Ziaur Rahman et al. (2010). Temporal variations of bacterial communities in two tropical fresh water systems with emphasis on the Escherichia coli- Shigella group. (external link)
- P. James; Jennifer Littlechild; M. Isupov et al. (2013). THERMOGENE - Novel thermostable enzymes for industrial biotechnology. (external link)
- Nils-Kåre Birkeland; Frøydis Garshol; Håkon Dahle et al. (2002). Novel bacterial lineages dominating in oil-well formation water. (external link)
- Ingeborg Knævelsrud; Hilde Ånensen; Sabina Kazazi et al. (2001). Temperature- and opposite-base-dependent excision of uracil from DNA by the hyperthermophilic Afung protein from Archaeoglobus fulgidus. (external link)
- Reidun Lillestøl; Torleiv Lien; Nils-Kåre Birkeland (2000). Lateral gene transfer in hyperthermophiles: Is the glutamate dehydrogenase gene in Archaeoglobus fulgidus strain 7324 transferred from a Thermococcus sp?. (external link)
- Reidun Lillestøl; Torleiv Lien; Nils-Kåre Birkeland (2001). Variation in nitrogen assimilation pathways in Archaeoglobus fulgidus are possibly caused by lateral gene transfer from a Thermococcus sp. (external link)
- Hiromi Ogino; Sonoko Ishino; Gyri Teien Haugland et al. (2014). Activation of the MCM helicase from the thermophilic archaeon, Thermoplasma acidophilum. (external link)
- Lianna Poghosyan; Nils-Kåre Birkeland; Hovik Panosyan (2014). Diversity of thermophilic anaerobes in the geothermal spring, Jermuk in Armania. (external link)
- Ani Saghatelyan; Nils-Kåre Birkeland; Hovik Panosyan (2014). Novel Thermus scotoductus strain isolated from Karvacahar (Nagorno-Karabakh) geothermal spring. (external link)
- Thomas Kruse; Helge Andre Erikstad; Chandini Murarilal Ratnadevi et al. (2018). Genome analysis of the thermoacidophilic methane oxidizer, Methylacidiphilum kamchatkense Kam1. (external link)
- Anita-Elin Fedøy; Hanna-Kirsti S. Leiros; Ida Helene Steen et al. (2012). Bacterial subfamiliy II isocitrate dehydrogenase: adaptations to low and high temperatures. (external link)
- Anita-Elin Fedøy; Lisbeth Glærum; Marit Steine Madsen et al. (2005). Molecular adaptations of isocitrate dehydrogenase to extreme temperatures. (external link)
- Gyri Teien Haugland; Jae-Ho Shin; Clair R Rollor et al. (2008). Functional analysis of the MCM and Cdc6 proteins from the thermoacidophilic euryarchaeon Thermoplasma acidophilum. (external link)
- Munavvara Dzhuraeva; Nils Kåre Birkeland; Chandini Murarilal Ratnadevi et al. (2021). Keratin-degrading thermophilic anaerobic bacteria from high-altitude geothermal springs in Tajikistan. (external link)
- Reidun Lillestøl; Torleiv Lien; Nils-Kåre Birkeland (2000). Lateral gene transfer in hyperthermophiles: Is the glutamate dehydrogenase gene in Archaeoglobus fulgidus strain 7324 transferred from a Thermococcus sp?. (external link)
- Tajul Islam; Øivind Larsen; Sigmund Jensen et al. (2006). The diversity of methanotrophic landfill soil communities assessed by culture-dependent and culture-independent approaches. (external link)
- Øivind Larsen; Torleiv Lien; Nils-Kåre Birkeland (2000). Dissimilatory sulfite reductase from thermophiles and probe for sulfate reducers. (external link)
- Øyvind Larsen; Live Janicke Bruseth; Nils-Kåre Birkeland et al. (2002). The genome sequence of Methylococcus capsulatus Bath. (external link)
- Ingeborg Knævelsrud; Gyri Haugland T.; Nils-Kåre Birkeland et al. (2004). Excision of dUMP from DNA by the hyperthermophilic archaeon Archaeoglobus fulgidus. (external link)
- Oddmund Johan Emmerhoff; Nils-Kåre Birkeland (1998). Characterization of Chaperonins form the hyperthermophilic archaeon <I>Archaeoglobus fulgidus<I>. (external link)
- Gyri Teien Haugland; Nils-Kåre Birkeland (2003). Expression of Archaeoglobus fulgidus Cdc6 homologues in Escherichia coli. (external link)
- Håkon Dahle; Nils-Kåre Birkeland (2003). Bioprospecting of thermophilic hydrogen-producing microorganisms. (external link)
- Runar Stokke; Ida Helene Steen; Marit Madsen et al. (2005). Thermostabilization of Isocitrate Dehydrogenase by Domain Swapping. (external link)
- Runar Stokke; Ida Helene Steen; Mikael Karlstrom et al. (2005). Molecular Adaptation of Isocitrate Dehydrogenase to Extreme Temperatures. (external link)
- Margarita Stoilova-Disheva; Dimitrina Lyutskanova; Ivanka Boyadzhieva et al. (2016). Phylogenetic analysis reveals a novel and extremely diverse archaeal community in the Vlasa hot spring,Velingrad, Bulgaria. (external link)
- Selina Akter; Nafisa Azmuda; Mohammed Ziaur Rahman et al. (2009). Adhesion potential of gfp-marked Escherichia coli from tropical aquatic environment. (external link)
- Mohammed Ziaur Rahman; Nafisa Azmuda; Munawar Sultana et al. (2009). Tracking of Shigella in Bangladeshi surface water: a comparative analysis of Shigella spp. and its close relatives. (external link)
- Ingeborg Knævelsrud; Nils-Kåre Birkeland; Svein Bjelland (2003). Afung represents the principal uracil DNA glycosylase enzyme present in the hyperthermophilic archaeon Archaeoglobus fu. (external link)
- Sudeep Karki; Antonio Garcia-Moyano; Christopher Sayer et al. (2017). Structural studies, substrate identification and activity of sugar aminotransferase enzymes from thermophilic (meta)genomes. (external link)
- Munavvara Dzhuraeva; Bobodzhanova Kh; Nils Kåre Birkeland (2015). Metagenomic insights into microbial diversity of a high-altitude geothermal spring in Tajikistan. (external link)
- Munavvara Dzhuraeva; Bobodzhanova Kh; Nils Kåre Birkeland (2025). Three novel thermophilic bacterial strains, Thermobaculum spp., from a high-altitude geothermal spring in Tajikistan. (external link)
- Helge Andre Erikstad; Thomas Jeffrey Keen; Sigmund Jensen et al. (2011). Is methane oxidation by methanotrophic Verrucomicrobia copper-independent?. (external link)
- Selina Akter; Kazi Sabrina Afreen; Mazharul Islam et al. (2010). Biofilm and colony morphology of Escherichia coli is correlated with inherent molecular structure. (external link)
- Hege Ommedal; Gro Gausdal; Nils-Kåre Birkeland (2002). Replacement of cysteine residues contributes to thermal adaptation of isocitrate dehydrogenase from Archaeoglobus fulgidus. (external link)
- Mikael Karlstrøm; Ida Helen Steen; Gudrun Tibbelin et al. (2001). Preliminary X-ray crystallographic analysis of isocitrate dehydrogenases from the hyperthermophiles Aeropyrum pernix, Pyrococcus furiosus, Archaeoglobus fulgidus and Thermotoga maritima. (external link)
- Hege Ommedal; Gro Gausdal; Nils-Kåre Birkeland (2001). Replacement of cysteine residues contributes to thermal adaptation of isocitrate dehydrogenase from Archaeoglobus fulgidus. (external link)
- Armine Margaryan; Nils-Kåre Birkeland; Hovik Panosyan et al. (2014). Distribution of heavy metal resistant bacteria in Armenian copper and gold mines and their response to heavy metal stress. (external link)
- Hiromi Ogino; Sonoko Ishino; Gyri Teien Haugland et al. (2014). Activation of the MCM helicase from the thermophilic archaeon, Thermoplasma acidophilum. (external link)
- Øivind Larsen; Torleiv Lien; Nils-Kåre Birkeland (1998). Dissimilatory sulfite reductase from Archaeoglobus profundus and Desulfotomaculum thermocisternum: phylogenetic and structural implication from gene sequences. (external link)
- Hovik Panosyan; Nils-Kåre Birkeland (2014). Thermostable α-amylase produced by Anoxibacillus flavitermus K103 isolated from an Armenian geothermal spring. (external link)
- Nils Kåre Birkeland; Jennifer A. Littlechild; Jean Armengaud et al. (2023). Thermophilic breakdown of keratin-laden biomass waste. (external link)
- Jennifer Littlechild; Misha Isupov; Paul James et al. (2016). THERMOGENE - Novel thermostable enzymes for industrial biotechnology. (external link)
- Ruben Javier Lopez; Munavvara Dzhuraeva; Khursheda Bobodzhanova et al. (2022). Fervidobacterium pennivorans T, a novel feather-degrading anaerobic thermophile. (external link)
- Faustina Asare; Nils-Kåre Birkeland (2016). Serological cross-reaction between Shigella dysenteriae type 4 and Escherichia albertii DM104 is caused by inter-species transfer of the O-antigen gene cluster. (external link)
- Munavvara Dzhuraeva; Nils Kåre Birkeland; Khursheda Bobodzhanova (2021). Isolation and characterization of anaerobic thermophilic bacteria from the Khodja-Obi-Garm geothermal spring (Tajikistan). (external link)
- Chandini Murarilal Ratnadevi; Thomas Kruse; Nils-Kåre Birkeland (2018). Genomic and Molecular characterization of Methylacidiphilum kamchatkense strain Kam1. (external link)
- Hovik Panosyan; Ani Saghatelyan; Armine Margaryan et al. (2015). Diversity of thermophiles in Armenian geothermal springs. (external link)
- Nils-Kåre Birkeland; Anders Schouw; Faisal Sinada (2013). Novel Thermoanaerobacter spp. from hot water produced from the Thar Jaht oil-field in South Sudan. (external link)
- Håkon Dahle; Torleiv Lien; Marit Steine Madsen et al. (2000). Characterisation of a new bacterial strain from the order Thermotogales, isolated from an oil-producing well in the North Sea. (external link)
- Ingeborg Knævelsrud; Svein Bjelland; Nils-Kåre Birkeland (2000). Uracil-DNA glycosylase from the hyperthermophilic archaeon Archaeoglobus fulgidus. (external link)
- Tajul Islam; Sigmund Jensen; Laila Johanne Reigstad et al. (2007). Methane oxidation at 60 degrees C and pH2 by a novel thermoacidophilic bacterium belonging to the Verrucomicrobia phylum. (external link)
- Håkon Dahle; Frøydis Garshol; Marit Steine Madsen et al. (2007). Microbial community structure analysis of produced water from a high-temperature oil-field in the North-Sea. (external link)
- Ida Helene Steen; Nils-Kåre Birkeland (2003). Thermostability, cofactor specificity, oligomeric state and phylogenetic affiliation of isocitrate dehydrogenase from Aeropyrum pernix, Archaeoglobus fulgidus, Pyrococcus furiosus and Thermotoga maritima. (external link)
- Michael Karlstrøm; Ida Helene Steen; Gudrun Tibbelin et al. (2003). X-ray structure analysis of isocitrate dehydrogenase from the hyperthermophile Aeropyrum pernix. (external link)
- Nils-Kåre Birkeland; Håkon Dahle; Marit Madsen (2005). Molecular and Culture-Based Analyses of Bacteria and Archaea from a North Sea Oil-Reservoir. (external link)
- Håkon Dahle; Nils-Kåre Birkeland (2004). Enrichment and isolation of thermophilic organisms capable of fermenting organic polymers. (external link)
- Ruben Javier-Lopez; Edoardo Mandolini; Mélodie Kielbasa et al. (2024). Proteomics analysis of Fervidobacterium pennivorans T, a case of in vitro evolution in the laboratory. (external link)
- Chandini Murarilal Ratnadevi; Thomas Kruse; Nils-Kåre Birkeland (2018). Genomic and Molecular characterization of Methylacidiphilum kamchatkense strain Kam1. (external link)
- Antonio Garcia-Moyano; Jose Berenguer; Nils-Kåre Birkeland (2019). Establishing a rapid screening platform for thermozymes: the disulfide isomerase case. (external link)
- Helge Andre Erikstad; Natalie Smestad; Nils-Kåre Birkeland (2014). Do methanotrophic and thermoacidophilic Verrucomicrobia possess a biogeographic structure?. (external link)
- Nils-Kåre Birkeland; Øyvind Larsen; Torleiv Lien (2000). Dissimilatory silfite reductase: Operon structure, phylogeny and probe for sulfate reducers. (external link)
- Øyvind Larsen; Live Janicke Bruseth; Nils-Kåre Birkeland et al. (2003). Metabolic pathways in Methylococcus capsulatus Bath. (external link)
- Maria Fernanda Goicochea Durand; Vladislav O. Pyrkin; Alexander Y. Merkel et al. (2022). Diversity of psychrophilic methanotrophs from the Barents Sea seabed revealed by enrichments and reconstruction of metagenome-assembled genomes. (external link)
- Helge Andre Erikstad; Ole Petter Nordbø; Nils-Kåre Birkeland (2013). Methane oxidation under extreme conditions by Verrucomicrobia methanotrophs. (external link)
- Anita-Elin Fedøy; Mikael Karlstrøm; Rudolf Ladenstein et al. (2006). Biochemical characterization and structure analysis of extremophilic isocitrate dehydrogenase. (external link)
- Antonio Garcia-Moyano; Nils-Kåre Birkeland (2018). Thermostable Disulfide Isomerases for Biotechnology. (external link)
- Øyvind Larsen; Torleiv Lien; Nils-Kåre Birkeland (2000). Dissimilatory sulfite reductase from thermophiles and probe for sulfate reducers. (external link)
- Jenny Littlechild; Peter Schønheit; Nils-Kåre Birkeland et al. (2014). THERMOGENE; Thermostable transferases for industrial biotechnology. (external link)
- Øivind Larsen; Victoria B. Urtegaard; Torleiv Lien et al. (1998). Dissimilatory sulfite reductase from sulfate-reducing prokaryotes isolated from North Sea oil wells. (external link)
- Anna Hakobyan; Nils-Kåre Birkeland; Hovik Panosyan et al. (2014). Microbial diversity analysis of an Armenian subterranean salt deposit using molecular and culture-based methods. (external link)
- Helge Andre Erikstad; Natalie Smestad; Nils-Kåre Birkeland (2014). Do methanotrophic and thermoacidophilic Verrucomicrobia possess biogeographic structure?. (external link)
- Nils-Kåre Birkeland; Hilde Ånensen; Wenche Kristoffersen et al. (2002). Cold-active methylpurine DNA glycosylase of the hyperthermophilic archaeon Archaeoglobus fulgidus. (external link)
- Thomas Kruse; Helge Andre Erikstad; Chandini Murarilal Ratnadevi et al. (2018). Genomics of the thermoachidophilic methane oxidising bacterium "Methylacidiphilum kamchatkense Kam1T. (external link)
- Helge Andre Erikstad; Nils-Kåre Birkeland (2012). Methane oxidation by thermoacidophilic Verrucomicrobia methanotrophs. (external link)
- Ida Helene Steen; Anita-Elin Fedøy; Nannan Yang et al. (2006). Biochemical characterization and structure analysis of extremophilic isocitrate dehydrogenase. (external link)
- Munavvara Dzhuraeva; Hovik Panosyan; Nils Kåre Birkeland et al. (2021). Newly isolated thermophilic Thermus sp. T84C3 strain from a geothermal spring in Tajikistan. (external link)
- Jonathan L. DiPippo; Camilla L. Nesbø; Håkon Dahle et al. (2008). Kosmotoga olearia gen. nov., sp. nov., a thermophilic, anaerobic heterotroph isolated from Troll B oil production fluid in the North Sea. (external link)
- Chandini Murarilal Ratnadevi; Thomas Kruse; Nils-Kåre Birkeland (2019). Comprehensive genome profiling of novel thermoacidophilic methanotroph, Methylacidipihilum sp. strain Yel. (external link)
- Nils-Kåre Birkeland; Thomas Jeffrey Keen (2013). Metagenomic analysis of production water from a deep and hot North Sea oil reservoir. (external link)
- Humaira Akhter; Jahanara Khatun; Sirajul islam Khan et al. (2006). PHENOTYPIC AND GENOTYPIC VARIATIONS AMONG ESCHERICIA COLI ISOLATED FROM AQUATIC, CLINICAL, AVIAN AND MAMMALIAN SOURCES. (external link)
- Anna Hakobyan; Hovik Panosyan; Armen H. Trchounian et al. (2015). Microbial diversity in Armenian saline-alkaline soils and subterranean salt deposits analyzed by molecular and culture-based methods.. (external link)
- Håkon Dahle; Frøydis Garshol; Marit Steine Madsen et al. (2007). Microbial community structure analysis of produced water from a high-temperature North-Sea oil-field. (external link)
- Ingeborg Knævelsrud; Gyri Teien Haugland; S. Kazazi et al. (2003). Afung represents the principal uracil DNA glycosylase enzyme present in the hyperthermophilic archaeon Archaeoglobus fulgidus. (external link)
- Runar Stokke; Nils-Kåre Birkeland (2003). Characterization of isocitrate dehydrogenase from two moderate thermophiles, Methylococcus capsulatus and Thermoplasma acidophilum. (external link)
- Frøydis Garshol; Håkon Dahle; Marit Madsen et al. (2003). Analysis of microbial communities associated with deep North Sea oil-wells using culture-dependent and culture-independent strategies. (external link)
- Hovik Panosyan; Nils-Kåre Birkeland (2010). Study of thermophilic microbial diversity in a hot mineral spring of Armenia using molecular and culture-based methods. (external link)
- Gyri Teien Haugland; Nils-Kåre Birkeland (2003). Expression of Archaeoglobus fulgidus Cdc6 homologues in Escherichia coli.. (external link)
- Ingeborg Knævelsrud; Gyri Teien Haugland; Nils-Kåre Birkeland et al. (2005). Excision of dUMP from DNA by the hyperthermophilic archaeon Archaeoglobus fulgidus. (external link)
- Hege Avsnes Dale; Torleiv Lien; Marit Steine Madsen et al. (1999). Expression of a thermostable L-malate dehydrogenase from <I>Archaeoglobus fulgidus</I> in <I>Escherichia coli</I>. (external link)
- Selina Akter; Kazi Sabrina Afreen; M Islam et al. (2011). FliC genotyping as a tool for epidemiological study of environmental Escherichia coli. (external link)
Conference abstract
- Nils Kåre Birkeland; Ragnhild Nielsen; Bjørn H Lindqvist (1984). Invitro deletion analysis of a gene controlling late gene-expression of phage-P2. (external link)
- Armine Margaryan; Hovik Panosyan; Nils-Kåre Birkeland et al. (2015). Heavy metal resistance of Bacillus subtilis AG4 isolated from the Sotk Gold Mine in Armenia. (external link)
- Armine Margaryan; Nils-Kåre Birkeland; Hovik Panosyan et al. (2013). The effect of combined heavy metal ions on copA, nikA and czcD genes expression of metal-resistant bacilli. (external link)
Conference lecture
- Nils-Kåre Birkeland (2011). Life on the edge: Diversity and adaptations of extremophiles. (external link)
- Nils-Kåre Birkeland (2009). The genome of Thermosipho africanus: lateral genetic connections to Firmicutes and Archaea. (external link)
- Håkon Dahle; Frøydis Garshol; Marit Madsen et al. (2003). Treasures in the deep biosphere of North Sea oil-wells. (external link)
- Michael Karlstrøm; Ida Helene Steen; Gudrun Tibbelin et al. (2003). X-ray structure analysis of isocitrate dehydrogenase from the hyperthermophile Aeropyrum pernix. (external link)
- Nils-Kåre Birkeland (2005). Sulphate-reducing bacteria and archaea. (external link)
- Thomas Kruse; Helge Andre Erikstad; Chandini Murarilal Ratnadevi et al. (2017). Molecular and genomic analysis of thermoacidophilic methanotrophic verrucomicrobia. (external link)
- Nils-Kåre Birkeland (2018). Verrucomicrobia Methanotrophs, a Novel Group of Extremophiles Adapted to Acidic Geothermal Environments. (external link)
- Nils-Kåre Birkeland (2012). Diversity of Extremophiles. (external link)
- Nils-Kåre Birkeland (2016). Extremophilic methane-oxidizing Verrucomicrobia. (external link)
- Nils-Kåre Birkeland (2017). Diversity of anaerobic thermophiles in North Sea oil reservoirs and their biotechnological potential. (external link)
- Ida Helene Steen; Marit Steine Madsen; Torleiv Lien et al. (2000). Isocitrate dehydrogenase from Aeropyrum pernix. (external link)
- Hilde Hvoslef; Ida Helene Steen; Torleiv Lien et al. (1996). Expression of a thermostable isocitrate dehydrogenase from the hyperthermophilic Archaeoglobus fulgidus in Escherichia coli. (external link)
- I.M. Tuffin; N. Khan; T. Makhalanyane et al. (2010). High microbial diversity in Antarctic Dry Valley soil microenvironments. (external link)
- Chandini Murarilal Ratnadevi; Thomas Kruse; Nils-Kåre Birkeland (2018). Methane-oxidation in extreme environments; the complete genome sequence of the thermoacidophilic methanotrophic Verrucomicrobia, Methylacidiphilum kamkcatkense. (external link)
- Ismatullo S; Munavvara Dzhuraeva; Nils Kåre Birkeland et al. (2025). Isolation of biotech-relevant thermophiles from Tajik geothermal springs. (external link)
- Munavvara Dzhuraeva; Bobodzhanova Kh; Nils Kåre Birkeland (2025). Genomic analysis of Thermus spp. from Tajikistan. (external link)
- Ingeborg Knævelsrud; Peter Ruoff; Hilde Ånensen et al. (2003). Base excision repair of deaminated DNA-cytosine in Archaea: novel genes and mechanisms. (external link)
- Torleiv Lien; Nils-Kåre Birkeland; Marit Madsen et al. (2001). Members of the Thermotogales order isolated from hot North Sea oil field water. (external link)
- Nils-Kåre Birkeland (2011). Extremophiles; adaptation and diversity. (external link)
- Nils-Kåre Birkeland (2011). Archaeal DNA replication. (external link)
- Nils-Kåre Birkeland (2019). Allopatric Evolution among Thermoacidophilic Verrucomicrobial Methanotrophs from Globally Distributed Terrestrial Hot Springs. (external link)
- Nils-Kåre Birkeland (2019). Allopatric evolution of thermoacidophilic Verrucomicrobia methanotrophs?. (external link)
- Nils-Kåre Birkeland (2015). Methane oxidation by methanotrophic Verrucomicrobia. (external link)
- Nils-Kåre Birkeland (2014). Adaptations to hot and cold: a case study of isocitrate dehydrogenase from extremophiles. (external link)
- Nils-Kåre Birkeland (2014). Adaptations to hot and cold: a case study of isocitrate dehydrogenase from extremophiles. (external link)
- Ida Helene Steen; [Mangler fornavn] Hvoslef. Hilde; Torleiv Lien et al. (1996). Archaeoglobus fulgidus isocitrate dehydrogenase: Purification, characterization, thermostability, genetic analysis and phylogeny. (external link)
- Nils-Kåre Birkeland; Helge Erikstad; Tajul Islam et al. (2009). Methane oxidation in extreme environments by a novel lineage of thermo-acidophilic methanotrophic Verrucomicrobia. (external link)
- Oddmund Johan Emmerhoff; Nils-Kåre Birkeland (1996). A chaperonin-encoding gene from the hyperthermophilic archaeon Archaeoglobus fulgidus. (external link)
- Ole Christian Bjørgo; Torleiv Lien; Marit Steine Madsen et al. (2000). Thermosipho strain TBA5, a new thermophilic anaerobic bacterium, isolated from a North Sea oil field. (external link)
- Oddmund Johan Emmerhoff; Nils-Kåre Birkeland (1996). A thermosome-encoding gene from the hyperthermophilic archaeon Archaeoglobus fulgidus. (external link)
- Ida Helene Steen; Hilde Hvoslef; Torleiv Lien et al. (1996). Archaeoglobus fulgidus isocitrate dehydrogenase: Purification, characterization, thermostability genetic analysis and phylogeny. (external link)
- Nils-Kåre Birkeland (2007). Microbial Diversity of Deep and Hot Petroleum Reservoirs. (external link)
- Nils-Kåre Birkeland (2002). Thermophilic microbes from North Sea oil wells and their thermostable proteins. (external link)
- Munavvara Dzhuraeva; Nils Kåre Birkeland; Bobodzhanova Kh (2025). Genomic properties of the Thermus strain isolated from the Tamdykul geothermal spring in Tajikistan. (external link)
- Ingar Leiros; Marivi P. Nabong; GT Haugland et al. (2006). Excision of 1-methyladenine and 3-methylcytosine from DNA by AfAlkA of Archaeoglobus fulgidus. (external link)
- Nils-Kåre Birkeland (2014). Antarctic cryptic microbial communities: Martian analogs for extremophilic life?. (external link)
- Nils-Kåre Birkeland (2014). Methane oxidation in extreme environments by thernmoacidophilic methanotrophic Verrucomicrobia. (external link)
- Nils-Kåre Birkeland (2014). Diversity and adaptations in Archaea, the third domain of life. (external link)
- Munavvara Dzhuraeva; Nils Kåre Birkeland; Khursheda Bobodzhanova (2022). Thermobaculum Tajikiense Sp. Nov., a Novel Thermophilic Bacterial Species from A High-Altitude Geothermal Spring in Tajikistan. (external link)
- Nils-Kåre Birkeland (2004). Extremophiles: basic concepts. (external link)
- Ida Helene Steen; Mikael Karlstrøm; Runar Stokke et al. (2004). Molecular adaptation of isocitrate dehydrogenase to high temperature. (external link)
- Nils-Kåre Birkeland (2009). Genetics of thermophiles. (external link)
- Nils-Kåre Birkeland (2016). Diversity of thermophiles from North Sea oil fields. (external link)
- Anne Siri Langelandsvik; Nina Aalen; Nils-Kåre Birkeland et al. (1996). L-Malate dehydrogenase from the hyperthermophilic archaeon Archaeoglobus fulgidus. (external link)
- Nils-Kåre Birkeland; Thomas Kruse Hansen; Chandini Murarilal Ratnadevi (2018). Methane oxidation by extremophilic verrucomicrobia adapted to acidic geothermal environments. (external link)
- Nils-Kåre Birkeland (1999). Overview of the research on molecular biology and biochemistry of thermophiles in Bergen. (external link)
- Sompong O-Thong; Poonsuk Prasertsan; Nils-Kåre Birkeland (2008). Thermophilic biohydrogen production from palm oil mill effluent by mixed culture community with anaerobic sequencing batch reactor (ASBR). (external link)
- Nils-Kåre Birkeland; Tajul Islam (2008). Thermo-acidophilic methane oxidation by Verrucmicrobia extends our perception of biological methane oxidation. (external link)
- Nils-Kåre Birkeland; Helge Erikstad; Jeffrey Keen et al. (2010). Methane oxidation by a novel lineage of thermo-acidophilic methanotrophic Verrucomicrobia. (external link)
- Nils-Kåre Birkeland (2002). Thermostable proteins from hyperthermophilic microorganisms. (external link)
- Nils-Kåre Birkeland (2009). Extremophiles: basic concepts. (external link)
- Nils-Kåre Birkeland (2009). Functional analysis of the DNA replication initiation proteins, Cdc6 and MCM, from Thermoplasma acidophilum. (external link)
- Munavvara Dzhuraeva; Bobodzhanova Kh; Nils Kåre Birkeland (2025). Metagenomic exploration of microbial diversity in a high-altitude geothermal spring of Tajikistan. (external link)
- Øyvind Larsen; Torleiv Lien; Nils-Kåre Birkeland (2001). Detection of sulfate reducers indigenous to North Sea oil wells using probes based on dissimilatory sulfite reductase gene sequences. (external link)
- Nils-Kåre Birkeland (2006). Isocitrate dehydrogenase from (hyper)thermophiles; Molecular adaptations to high temperatures. (external link)
- Ole Christian Bjørgo; Torleiv Lien; Marit Madsen et al. (2000). Thermosipho strain TBA5, a new thermophilic anaerobic bacterium, isolated from a North Sea oil field. (external link)
- Øyvind Larsen; Live Janicke Bruseth; Nils-Kåre Birkeland et al. (2002). Sequencing of the Methylococcus capsulatus genome. (external link)
- Nils-Kåre Birkeland (2014). Adaptations to hot and cold: a case study of isocitrate dehydrogenase from extremophiles. (external link)
- Nils Kåre Birkeland (2025). Biodegradation of Feather Keratin by Thermophilic Fervidobacterium Species: Structural and Multi-omics Insights. (external link)
- Nils Kåre Birkeland (2025). Insights into thermophilic breakdown of feather keratin by Fervidobacterium. (external link)
- Nils-Kåre Birkeland (2016). Anaerobic thermophiles from deep and hot North Sea oil wells. (external link)
- Nils-Kåre Birkeland (2004). Natural gas and biotechnology: Bioprospecting of methane-oxidizing bacteria. (external link)
- Nils Kåre Birkeland (2021). Thermophilic Breakdown of Feather Keratin by Fervidobacteria. (external link)
- Torleiv Lien; Marit Steine Madsen; Fred A. Rainey et al. (1996). Isolation and characterization of a novel Petrotoga sp. from a North Sea oil-producing well. (external link)
- Oddmund Johan Emmerhoff; Nils-Kåre Birkeland (1996). A chaperonin-encoding gene from the hyperthermophilic archaeon Archaeoglobus fulgidus. (external link)
- Oddmund Johan Emmerhoff; Nils-Kåre Birkeland (1996). A thermosome-encoding gene from the hyperthermophilic archaeon Archaeoglobus fulgidus. (external link)
- Rohit Sharma; Jasjeet Kaur; Nils-Kåre Birkeland (2007). Synthesis of methyl ester/s by transesterification using lipase produced by a thermophile. (external link)
- Nils-Kåre Birkeland (2007). Isocitrate dehydrogenase from (hyper)thermophiles; Molecular adaptations to high temperatures. (external link)
- Nils-Kåre Birkeland (2011). The GINS complex from Thermoplasma acidophilum may function as a homotetramer in DNA replication. (external link)
- Nils-Kåre Birkeland (2002). Bakterielle næringskomponenter og metabolisme. (external link)
- Thomas Kruse; Chandini Murarilal Ratnadevi; Nils-Kåre Birkeland (2019). Complete genome sequence analysis of the thermoacidophilic verrucomicrobial methanotroph “Ca. Methylacidiphilum kamchatkense” strain Kam1 and comparison with its closest relatives. (external link)
- Nils-Kåre Birkeland (2006). Microbial diversity in deep petroleum reservoirs. (external link)
- Ida Helene Steen; Marit Madsen; Torleiv Lien et al. (2000). Isocitrate dehydrogenase from Aeropyrum pernix. (external link)
- Hege Avsnes Dale; Torleiv Lien; Marit Madsen et al. (2000). Expression and characterization of a recombinant L-malate dehydrogenase from Archaeoglobus fulgidus strain VC-16. (external link)
- Nils-Kåre Birkeland (2018). Methane oxidation by extremophilic Verrucomicrobia adapted to acidic geothermal environments. (external link)
- Gyri Teien Haugland; Jae-Ho Shin; Clair R Rollor et al. (2008). Functional analysis of the MCM and Cdc6 proteins from the thermoacidophilic euryarchaeon Thermoplasma acidophilum. (external link)
- Nils-Kåre Birkeland (2000). Anaerobic microbiology at University of Bergen. (external link)
- Armine Margaryan; Nils-Kåre Birkeland; Y Popov et al. (2014). Armenian mines as a source of heavy metal accumulating metalophilic bacilli. (external link)
- Nils-Kåre Birkeland (2012). Chemical strategies of extremophiles. (external link)
- Adriana Irimia; Frederic M.D. Vellieux; Dominique Madern et al. (2004). The 2.9 Å resolution structure of malate dehydrogenase from the hyperthermophilic archaeon Archaeoglobus fulgidus: mechanisms of oligomerisation and thermal stabilisation. (external link)
- Munavvara Dzhuraeva; Chandini Murarilal Ratnadevi; Nils Kåre Birkeland et al. (2021). Metagenome-assembled genomes from a high-altitude geothermal spring in Tajikistan provide insights into its microbial diversity. (external link)
- Nils-Kåre Birkeland (2009). Molecular basis of the stability of biomoleculees in hot environments. (external link)
- Nils-Kåre Birkeland (2017). Diversity and adaptation of extreme thermophiles. (external link)
- Nils-Kåre Birkeland (2017). Diversity and adaptations of extremophilic microorganisms. (external link)
- Nils-Kåre Birkeland (2009). Thermophilic methane oxidizers belonging to the phylum Verrucomicrobia. (external link)
- Hege Avsnes Dale; Torleiv Lien; Marit Steine Madsen et al. (2000). Expression and characterization of a recombinant L-malate dehydrogenase from Archaeoglobus fulgidus strain VC-16. (external link)
- Hilde Hvoslef; Ida Helene Steen; Torleiv Lien et al. (1996). Expression of a thermostable isocitrate dehydrogenase from the hyperthermophilic Archaeoglobus fulgidus in Escherichia coli. (external link)
- Johan Lillehaug; Øyvind Larsen; Live Janicke Bruseth et al. (2003). The genomic sequencing of Methylococcus capsulatus (Bath). Repair of alkylated DNA by oxidative demethylation. (external link)
- Rohit Sharma; Esha Khullar; Karan Bangsal et al. (2008). Nitrile hydrolysing enzymes from extremophiles: their role in biocatalysis. (external link)
- Mohammed Ziaur Rahman; Iqbal Kabir Jahid; Nafisa Azmuda et al. (2009). Evolutionary and genetic relatedness of Shigella-like bacteria in aquatic environment of Bangladesh. (external link)
- Sigmund Jensen; Nils-Kåre Birkeland; Josh d Neufeld et al. (2006). Exploring the microbiology of a deep water coral reef outside mid Norway. (external link)
- Nils-Kåre Birkeland (2009). Oil Well ecology: What’s happening and who is living down there?. (external link)
- Nils-Kåre Birkeland (2009). The oil reservoir ecosystem: what is happening and who is living down there?. (external link)
Academic article
- S.T. Towhid; Humaira Akhter; N. Azmuda et al. (2009). Comparison of Cultural and Molecular Characteristics of Escherichia coli isolated from Freshwater of Bangladesh. (external link)
- Akzhigit Mashzhan; Aida Kistaubayeva; Ruben Javier Lopez et al. (2024). Polycladomyces zharkentensis sp. nov., a novel thermophilic cellulose-and starch-degrading member of the Bacillota from a geothermal aquifer in Kazakhstan. (external link)
- Vyacheslav Shurigin; Dilfuza Egamberdieva; Li Li et al. (2020). Endophytic bacteria associated with halophyte Seidlitzia rosmarinus Ehrenb. ex Boiss. from saline soil of Uzbekistan and their plant beneficial traits. (external link)
- Garabed Antranikian; Marcel Suleiman; Christian Schäfers et al. (2017). Diversity of bacteria and archaea from two shallow marine hydrothermal vents from Vulcano Island. (external link)
- Anders Schouw; Faisal Sinada; Nils-Kåre Birkeland (2013). Thermoanaerobacter spp. recovered from hot produced water from the Thar Jath oil-field in South Sudan. (external link)
- Hiroyasu Ogino; S Ishino; K Mayanagi et al. (2011). The GINS complex from the thermophilic archaeon, Thermoplasma acidophilum may function as a homotetramer in DNA replication. (external link)
- Thomas Kruse Hansen; Chandini Murarilal Ratnadevi; Helge Andre Erikstad et al. (2019). Complete genome sequence analysis of the thermoacidophilic verrucomicrobial methanotroph “Candidatus Methylacidiphilum kamchatkense” strain Kam1 and comparison with its closest relatives. (external link)
- Runar Stokke; Nils-Kåre Birkeland; Ida Helene Steen (2007). Thermal stability and biochemical properties of isocitrate dehydrogenase from the thermoacidophilic archaeon Thermoplasma acidophilum. (external link)
- Thulani P. Makhalanyane; Angel Valverde; Nils-Kåre Birkeland et al. (2013). Evidence for successional development in Antarctic hypolithic bacterial communities. (external link)
- Selina Akter; Mohammad Sirajul Islam; Kazi Sabrina Afreen et al. (2013). Prevalence and distribution of different diarrhoeagenic Escherichia coli virulotypes in major water bodies in Bangladesh. (external link)
- Tajul Islam; Sigmund Jensen; Laila Johanne Reigstad et al. (2008). Methane oxidation at 55 degrees C and pH 2 by a thermoacidophilic bacterium belonging to the Verrucomicrobia phylum. (external link)
- Ani Saghatelyan; Lianna Poghosyan; Hovik Panosyan et al. (2015). Draft genome sequence of Thermus scotoductus strain K1, isolated from a geothermal spring in Karvachar, Nagorno Karabakh. (external link)
- Nils Kåre Birkeland; Bjørn H Lindqvist (1986). Coliphage P2 Late Control Gene ogr: DNA Sequence and Product Identification. (external link)
- Nils-Kåre Birkeland; Hilde Ånensen; Ingeborg Knævelsrud et al. (2002). Methylpurine DNA glycosylase of the hyperthermophilic archaeon Archaeoglobus fulgidus. (external link)
- Camilla Lothe Nesbø; Kirsten S. Swithers; Håkon Dahle et al. (2015). Evidence for extensive gene flow and Thermotoga subpopulations in subsurface and marine environments. (external link)
- Torleiv Lien; Marit Steine Madsen; Fred A. Rainey et al. (1998). Petrotoga mobilis sp. nov., from a North Sea oil-production well. (external link)
- Hovik Panosyan; Anna Hakobyan; Nils-Kåre Birkeland et al. (2018). Bacilli community of saline–alkaline soils from the Ararat Plain (Armenia) assessed by molecular and culture-based methods. (external link)
- Sompong O-Thong; Peerawat Khongkliang; Chonticha Mamimin et al. (2017). Draft genome sequence of Thermoanaerobacterium sp. strain PSU-2 isolated from thermophilic hydrogen producing reactor. (external link)
- Nafisa Azmuda; Md. Fakruddin; Sirajul Islam Khan et al. (2019). Bacterial Community Profiling of Tropical Freshwaters in Bangladesh. (external link)
- Munavvara Dzhuraeva; Khursheda Bobodzhanova; Ruben Javier Lopez et al. (2023). Draft Genome Sequence of Agrobacterium radiobacter Strain MD22b, Isolated from a Grape Plant in Tajikistan. (external link)
- K.K. Yadav; L. Iyengar; Nils-Kåre Birkeland et al. (2005). Transient accumulation of metabolic intermediates of p-cresol in the culture medium by a Pseudomonas sp strain A isolated from a sewage treatment plant. (external link)
- Iqbal Kabir Jahid; T. Azad; Mohammed Ziaur Rahman et al. (2010). Survival study of Eschericia coli O157:H7 in the aquatic system of Bangladesh. (external link)
- Armine Margaryan; Hovik Panosyan; Chonticha Mamimin et al. (2019). Insights into the Bacterial Diversity of the Acidic Akhtala Mine Tailing in Armenia Using Molecular Approaches. (external link)
- Camilla L. Nesbø; Eric Bapteste; Bruce Curtis et al. (2009). The Genome of Thermosipho africanus TCF52B: Lateral Genetic Connections to the Firmicutes and Archaea. (external link)
- Anne Siri Langelandsvik; Ida Helene Steen; Nils-Kåre Birkeland et al. (1997). Properties and primary structure of a thermostable L-malate dehydrogenase from Archaeoglobus fulgidus. (external link)
- Nikoleta Boteva; Nils Kåre Birkeland; Margarita Kambourova (2021). Complete nitrogen cycle driven by the thermophilic microbial community of Rupi II hot spring. (external link)
- Munavvara Dzhuraeva; Nils Kåre Birkeland; Bobodzhanova Kh (2025). Detection of Bacteria and Archaea from Khodja-obi-garm geothermal spring using a PCR-based method. (external link)
- Humaira Akhter; M. Fakruddin; A.H.M. Badruddoza et al. (2009). Prevalence of antimicrobial resistant bacteria cultured from cattle feces and surface water. (external link)
- Nils-Kåre Birkeland (2004). The microbial diversity of deep subsurface oil reservoirs. (external link)
- Munavvara Dzhuraeva; Khursheda Bobodzhanova; Nils Kåre Birkeland (2024). The metagenomic landscape of a high-altitude geothermal spring in Tajikistan reveals a novel Desulfurococcaceae member, Zestomicrobium tamdykulense gen. nov., sp. nov. (external link)
- Poonsuk Prasertsan; Sompong O-Thong; Nils-Kåre Birkeland (2009). Optimization and microbial community analysis for production of biohydrogen from palm oil mill effluent by thermophilic fermentative process. (external link)
- Sophie Maisnier-Patin; Laurence Malandrin; Nils-Kåre Birkeland et al. (2002). Chromosome replication patterns in the hyperthermophilic euryarchaea Archaeoglobus fulgidus and Methanocaldococcus (Methanococcus) jannaschii. (external link)
- Ingar Leiros; Marivi P. Nabong; Kristin Grøsvik et al. (2007). Structural basis for enzymatic excision of N-1-methyladenine and N-3-methylcytosine from DNA. (external link)
- Ruben Javier Lopez; Edoardo Mandolini; Munavvara Dzhuraeva et al. (2022). Fervidobacterium pennivorans subsp. keratinolyticus subsp. nov., a Novel Feather-Degrading Anaerobic Thermophile. (external link)
- Håkon Dahle; Frøydis Kristi Garshol; Marit Steine Madsen et al. (2008). Microbial community structure analysis of produced water from a high-temperature North Sea oil-field. (external link)
- Dominique Madern; C. Ebel; Hege Avsnes Dale et al. (2001). Differences in Oligomeric States of the (LDH-like)L-MalDH from the Hyperthermophilic Archaea Methanococcus jannaschii and Archaeoglobus fulgidus. (external link)
- Aleksandra R Stroeva; Alexandra A Klyukina; Olesya N Vidishcheva et al. (2024). Structure of Benthic Microbial Communities in the Northeastern Part of the Barents Sea. (external link)
- Helge Andre Erikstad; Nils-Kåre Birkeland (2015). Draft genome sequence of "Candidatus Methylacidiphilum kamchatkense" strain Kam1, a thermoacidophilic methanotrophic verrucomicrobium. (external link)
- Sigmund Jensen; Josh D. Neufeld; Nils-Kåre Birkeland et al. (2008). Insight into the microbial community structure of a Norwegian deep-water coral reef environment. (external link)
- Ingeborg Knævelsrud; Marivi Moen; Kristin Grøsvik et al. (2010). The Hyperthermophilic Euryarchaeon Archaeoglobus fulgidus Repairs Uracil by Single-Nucleotide Replacement. (external link)
- Sigmund Jensen; Sebastien Duperron; Nils-Kåre Birkeland et al. (2010). Intracellular Oceanospirillales bacteria inhabit gills of Acesta bivalves. (external link)
- Ruben Javier Lopez; Mélodie Kielbasa; Jean Armengaud et al. (2025). Transcriptomic and proteomic insights into feather keratin degradation by Fervidobacterium. (external link)
- Ida Helene Steen; Hilde Hvoslef; Nils-Kåre Birkeland et al. (2001). Archaeoglobus fulgidus isocitrate dehydrogenase, malate dehydrogenase and glutamate dehydrogenase. (external link)
- Ruben Javier Lopez; Natia Geliashvili; Nils Kåre Birkeland (2024). Comparative genomics of Fervidobacterium: a new phylogenomic landscape of these wide-spread thermophilic anaerobes. (external link)
- Øivind Larsen; Torleiv Lien; Nils-Kåre Birkeland (1999). Dissimilatory sulfite reductase from <I>Archaeoglobus profundus</I> and <I>Desulfotomaculum thermocisternum</I>: phylogenetic and structural implications from gene sequences. (external link)
- Naomi Ward; Øivind Larsen; Live J. Bruseth et al. (2004). Genomic insights into methanotrophy: The complete genome sequence of Methylococcus capsulatus (Bath). (external link)
- Margarita L. Miroshnichenko; Ilya V. Kublanov; Nadezhda A. Kostrikina et al. (2008). Caldicellulosiruptor kronotskyensis sp nov and Caldicellulosiruptor hydrothermalis sp nov., two extremely thermophilic, cellulolytic, anaerobic bacteria from Kamchatka thermal springs. (external link)
- Mikael Karlström; Runar Stokke; Ida Helene Steen et al. (2005). Isocitrate dehydrogenase from the hyperthermophile Aeropyrum pernix: X-ray structure analysis of a ternary enzyme-substrate complex and thermal stability. (external link)
- Sonja-Verena Albers; Nils-Kåre Birkeland; Arnold J. M. Driessen et al. (2009). SulfoSYS (Sulfolobus Systems Biology): towards a silicon cell model for the central carbohydrate metabolism of the archaeon Sulfolobus solfataricus under temperature variation. (external link)
- Ida Helene Steen; Marit Steine Madsen; Nils Kåre Birkeland et al. (1998). Corrigendum to `Purification and characterization of a monomeric isocitrate dehydrogenase from the sulfate-reducing bacterium Desulfobacter vibrioformis and demonstration of the presence of a monomeric enzyme in other bacteria': [FEMS Microbiol. Lett. 160 (1998) 75–79]. (external link)
- Dag Lillehaug; Ingolf Nes; Nils Kåre Birkeland (1997). A highly efficient and stable system for site-specific integration of genes and plasmids into the phage φLC3 attachment site (attB) of the Lactococcus lactis chromosome. (external link)
- Akzhigit Mashzhan; Ruben Javier-Lopez; Aida Kistaubayeva et al. (2021). Metagenomics and Culture-Based Diversity Analysis of the Bacterial Community in the Zharkent Geothermal Spring in Kazakhstan. (external link)
- P. Singh; Nils-Kåre Birkeland; L. Iyengar et al. (2006). Mineralization of 4-aminobenzenesulfonate (4-ABS) by Agrobacterium sp. strain PNS-1. (external link)
- Sireethorn Khaonuan; Nikannapas Usmanbaha; Chen-Yeon Chu et al. (2025). Enhancing Butanol during Acetone-butanol-ethanol (ABE) Fermentation using Clostridium beijerinckii ATCC 10132 by pH Control Strategy and Molasses Pretreatment. (external link)
- Diana Ghevondyan; Anna Hakobyan; Armine Margaryan et al. (2025). Production, characterization, and genomic insights of a human lectin-binding exopolysaccharide from Haloarcula japonica strain SST1. (external link)
- Dag Lillehaug; Bjørn H Lindqvist; Nils Kåre Birkeland (1991). Characterization of Phi-LC3, a Lactococcus-lactis subsp cremoris Temperate Bacteriophage with Cohesive Single-Stranded-DNA Ends. (external link)
- Adriana Irimia; Frederic M.D. Vellieux; Dominique Madern et al. (2004). The 2.9 Ångström resolution crystal structure of malate dehydrogenase from Archaeoglobus fulgidus: mechanisms of oligomerisation and thermal stabilisation. (external link)
- Hovik Panosyan; Armine Margaryan; Nils-Kåre Birkeland (2021). Anoxybacillus karvacharensis sp. nov., a novel thermophilic bacterium isolated from the Karvachar geothermal spring in Nagorno-Karabakh. (external link)
- Tania Sultana Bonny; Nafisa Azmuda; Sirajul islam Khan et al. (2010). Virulence of environmental Stenotrophomonas maltophila serologically cross-reacting with Shigella-specific antisera. (external link)
- Dag Lillehaug; Nils-Kåre Birkeland (1993). Characterization of Genetic Elements Required for Site-Specific Integration of the Temperate Lactococcal Bacteriophage φLC3 and Construction of Integration-Negative φLC3 Mutants. (external link)
- Helge Andre Erikstad; Ruben Michael Ceballos; Natalie Bennett Smestad et al. (2019). Global Biogeographic Distribution Patterns of Thermoacidophilic Verrucomicrobia Methanotrophs Suggest Allopatric Evolution. (external link)
- Gyri Teien Haugland; M Innselset; Dominique Madern et al. (2008). Characterization of the Cdc6 Homologues from the Euryarchaeon Thermoplasma acidophilum. (external link)
- Srisuda Chaikitkaew; Jiravut Seengenyoung; Chonticha Mamimin et al. (2021). Simultaneous biogas upgrading and acetic acid production by homoacetogens consortium enriched from peatland soil. (external link)
- Ingeborg Knævelsrud; Peter Ruoff; Hilde Ånensen et al. (2001). Excision of uracil from DNA by the hyperthermophilic Afung protein is dependent on the opposite base and stimulated by heat-induced transition to a more open structure. (external link)
- Hongchen Jiang; Jianrong Huang; Li Li et al. (2021). Onshore soil microbes and endophytes respond differently to geochemical and mineralogical changes in the Aral Sea. (external link)
- Øyvind Larsen; Torleiv Lien; Nils-Kåre Birkeland (2000). Characterization of the desulforubidin operons from Desulfobacter vibrioformis and Desulfobulbus rhabdoformis. (external link)
- Nina Aalen; Ida Helene Steen; Nils-Kåre Birkeland et al. (1997). Purification and properties of an extremely thermostable NADP-specific glutamate dehydrogenase from Archaeoglobus fulgidus. (external link)
- Armine A. Margaryan; Hovik H. Panosyan; Nils-Kåre Birkeland et al. (2013). Heavy metal accumulation and the expression of the copA and nikA genes in Bacillus subtilis AG4 isolated from the Sotk gold mine in Armenia. (external link)
- Ida Helene Steen; Dominique Madern; Mikael Karlstrøm et al. (2001). Comparison of isocitrate dehydrogenase from three different hyperthermophiles reveals differences in thermostability, cofactor specificity, oligomeric state and phylogenetic affiliation. (external link)
- Dominique Madern; C. Ebel; Hege Avsnes Dale et al. (2001). Differences in the oligomeric state of the LDH-like L-MalDH from the hyperthermophilic archaea Methanococcus jannaschii and Archaeoglobus fulgidus. (external link)
- Sompong O-Thong; Poonsuk Prasertsan; Nils-Kåre Birkeland (2009). Evaluation of methods for preparing hydrogen-producing seed inocula under thermophilic condition by process performance and microbial community analysis. (external link)
- Ida Helene Steen; Marit Steine Madsen; Nils-Kåre Birkeland et al. (2002). Identification of cofactor discrimination siten in NAD-isocitrate dehydrogenase from Pyrococcus furious. (external link)
- Hovik Panosyan; Nils-Kåre Birkeland (2014). Microbial diversity in an Armenian geothermal spring assessed by molecular and culture-based methods. (external link)
- Helge Andre Erikstad; Sigmund Jensen; Thomas Jeffrey Keen et al. (2012). Differential expression of particulate methane monooxygenase genes in the verrucomicrobial methanotroph 'Methylacidiphilum kamchatkense' Kam1. (external link)
- Mikael Karlström; Roberta Chiaraluce; Laura Giangiacomo et al. (2010). Thermodynamic and kinetic stability of a large multi-domain enzyme from the hyperthermophile Aeropyrum pernix. (external link)
- R Stokke; Ingar Leiros; Mikael Karlström et al. (2007). Thermal stability of isocitrate dehydrogenase from Archaeoglobus fulgidus studied by crystal structure analysis and engineering of chimers. (external link)
- Svein Bjelland; Nils Kåre Birkeland; Tore Benneche et al. (1994). DNA glycosylase activities for thymine residues oxidized in the methyl group are functions of the AlkA enzyme in Escherichia coli.. (external link)
- Mohammed Ziaur Rahman; Nafisa Azmuda; Mohammad Jahangir Hossain et al. (2011). Recovery and Characterization of Environmental Variants of Shigella flexneri from Surface Water in Bangladesh. (external link)
- Mikael Karlström; Ida Helene Steen; Dominique Madern et al. (2006). The crystal structure of a hyperthermostable subfamily II isocitrate dehydrogenase from Thermotoga maritima. (external link)
- Nikoleta Boteva; Nils Kåre Birkeland; Margarita Kambourova (2021). Metagenome-assembled genomes related to ammonia-oxidizing Thaumarchaeota recovered from near-anoxic environment. (external link)
- Armine Margaryan; Sona Nikolyan; Irina Ayvazyan et al. (2025). Heavy Metal-Resistant Bacterial Communities in the Artsvanik Tailing Dump, Armenia. (external link)
- Nils Kåre Birkeland; Signe Kjelstrup Ratkje (1985). Active Uptake of Glutamate in Vesicles of Halobacterium salinarium. (external link)
- Audun Slettan; Kirsti Gebhardt; Evy Kristiansen et al. (1992). Escherichia coli K-12 and B contain functional bacteriophage P2 ogr genes. (external link)
- Nils Kåre Birkeland; Tor Hofstad (1982). Chemical-composition, ultrastructure and some serological properties of lipopolysaccharides from Leptotrichia-buccalis. (external link)
- Munavvara Dzhuraeva; Mehrangez Shokirova; Ani Azaryan et al. (2020). Draft Genome Sequence of Escherichia coli Strain Tj, Isolated from the Varzob River in Tajikistan. (external link)
- Sigmund Jensen; Josh d Neufeld; Nils-Kåre Birkeland et al. (2008). Methane assimilation and trophic interactions with marine Methylomicrobium in deep-water coral reef sediment off the coast of Norway. (external link)
- Håkon Dahle; Nils-Kåre Birkeland (2006). Thermovirga lienii gen. nov., sp. nov., a novel moderately thermophilic, anaerobic, amino-acid-degrading bacterium isolated from a North Sea oil well. (external link)
- Nils-Kåre Birkeland (1994). Cloning, molecular characterization, and expression of the genes encoding the lytic functions of lactococcal bacteriophage phi-LC3: a dual lysis system og modular design. (external link)
- Torleiv Lien; Marit Steine Madsen; Nils-Kåre Birkeland et al. (1998). Petrotoga mobilis sp. nov., from a North Sea oil-production well. (external link)
- Tajul Islam; Øivind Larsen; Nils-Kåre Birkeland (2020). A novel cold-adapted Methylovulum species, with a high C16:1ω5c content, isolated from an arctic thermal spring in spitsbergen. (external link)
- Jonathan L. DiPippo; Camilla L. Nesbø; Håkon Dahle et al. (2009). Kosmotoga olearia gen. nov., sp nov., a thermophilic, anaerobic heterotroph isolated from an oil production fluid. (external link)
- Nafisa Azmuda; Mohammed Ziaur Rahman; Munawar Sultana et al. (2012). Evidence of interspecies O antigen gene cluster transfer between Shigella boydii 15 and Escherichia fergusonii. (external link)
- Sireethorn Khaonuan; Rattana Jariyaboon; Nikannapas Usmanbaha et al. (2023). Potential of butanol production from Thailand marine macroalgae using Clostridium beijerinckii ATCC 10132-based ABE fermentation. (external link)
- Nils Kåre Birkeland; Gail E Christie; Bjørn H Lindqvist (1988). Directed mutagenesis of the bacteriophage P2 ogr gene defines an essential function. (external link)
- Namcy J. Grambow; Nils Kåre Birkeland; Douglas L. Anders et al. (1990). Deletion analysis of a bacteriophage P2 late promoter. (external link)
- Diana Ghevondyan; Tigran Soghomonyan; Pargev Hovhannisyan et al. (2024). Detergent-resistant α-amylase derived from Anoxybacillus karvacharensis K1 and its production based on whey. (external link)
- Nils Kåre Birkeland; Bjørn H Lindqvist; Gail E Christie (1991). Control of bacteriophage P2 gene expression: analysis of transcription of the ogr gene. (external link)
- Akzhigit Mashzhan; Aida Kistaubayeva; Ruben Javier Lopez et al. (2024). Caldanaerobacter subterraneus subsp. keratinolyticus subsp. nov., a Novel Feather-Degrading Anaerobic Thermophile. (external link)
- Vyacheslav Shurigin; Anna Hakobyan; Hovik Panosyan et al. (2019). A glimpse of the prokaryotic diversity of the Large Aral Sea reveals novel extremophilic bacterial and archaeal groups. (external link)
- Fatema Moni Chowdhury; Chowdhury Rafiqul Ahsan; Nils Kåre Birkeland (2021). Oral immunization of Escherichia albertii strain DM104 induces protective immunity against Shigella dysenteriae type 4 in mouse model. (external link)
- Tajul Islam; Øivind Larsen; Vigdis Lid Torsvik et al. (2015). Novel Methanotrophs of the Family Methylococcaceae from Different Geographical Regions and Habitats. (external link)
- Nafisa Azmuda; Mohammed Ziaur Rahman; Marit Steine Madsen et al. (2012). Prevalence of a novel division-level bacterial lineage in Lake Dhanmondi, Dhaka, Bangladesh, as revealed by deep sequencing of 16S rRNA gene amplicons. (external link)
- Marivi Moen; Ingeborg Knævelsrud; Gyri Teien Haugland et al. (2011). Uracil-DNA Glycosylase of Thermoplasma acidophilum Directs Long-Patch Base Excision Repair, Which Is Promoted by Deoxynucleoside Triphosphates and ATP/ADP, into Short-Patch Repair. (external link)
- Fatema Moni Chowdhury; Mohammed Ziaur Rahman; Sirajul Islam Khan et al. (2014). An Environmental escherichia albertii strain, dm104, induces protective immunity to shigella dysenteriae in guinea pig eye model. (external link)
- Mohammed Ziaur Rahman; Selina Akter; Nafisa Azmuda et al. (2013). Serological cross-reaction between O-antigens of Shigella dysenteriae type 4 and an environmental Escherichia albertii isolate. (external link)
- T.V. Khijniak; A.I. Slobodkin; V. Coker et al. (2005). Reduction of uranium(VI) phosphate during growth of the thermophilic bacterium Thermoterrabacterium ferrireducens. (external link)
- Gyri Teien Haugland; N Sakakibara; Angel Pey et al. (2008). Thermoplasma acidophilum Cdc6 protein stimulates MCM helicase activity by regulating its ATPase activity. (external link)
- Mohammed Ziaur Rahman; Munawar Sultana; Sirajul Islam Khan et al. (2007). Serological cross-reactivity of environmental isolates of Enterobacter, Escherichia, Stenotrophomonas, and Aerococcus with Shigella spp.-specific antisera. (external link)
- Ingar Leiros; MP Nabong; Marivi Nabong et al. (2007). Structural basis for enzymatic excision of N-1-methyladenine and N-3-methylcytosine from DNA. (external link)
- Nils Kåre Birkeland; A-M Lønneborg (1993). The cos region of lactococcal bacteriophage øLC3. (external link)
- Gyri Teien Haugland; Claire R. Rollor; Nils-Kåre Birkeland et al. (2009). Biochemical characterization of the minichromosome maintenance protein from the archaeon Thermoplasma acidophilum. (external link)
- Munavvara Dzhuraeva; Ismatullo S; Nils Kåre Birkeland et al. (2025). Exploring thermophilic microbes and extracellular enzymes in geothermal springs of Tajikistan. (external link)
- Chandini Murarilal Ratnadevi; Helge Andre Erikstad; Thomas Kruse et al. (2023). Methylacidiphilum kamchatkense gen. nov., sp. nov., an extremely acidophilic and moderately thermophilic methanotroph belonging to the phylum Verrucomicrobiota. (external link)
- Nils Kåre Birkeland; Tor Hofstad (1985). Oligosaccharides obtained by partial hydrolysis of lipopolysaccharides from Leptotrichia-buccalis. (external link)
- Sompong O-Thong; Poonsuk Prasertsan; Nugul Intrasungkha et al. (2007). Improvement of biohydrogen production and treatment etticiency on palm oil mill effluent with nutrient supplementation at thermophilic condition using an anaerobic sequencing batch reactor. (external link)
- Nils Kåre Birkeland; Tor Hofstad (1982). Isolation by gel-filtration and ion-exchange chromatography of a carbohydrate-rich LPS from phenol-water extracts of Leptotrichia-buccalis strain-l11. (external link)
- Hiromi Ogino; Sonoko Ishino; Gyri Teien Haugland et al. (2014). Activation of the MCM helicase from the thermophilic archaeon, Thermoplasma acidophilum by interactions with GINS and Cdc6-2. (external link)
- Alexander I. Slobodkin; Tatyana P. Tourova; Nadezhda A. Kostrikina et al. (2006). Tepidimicrobium ferriphilum gen nov, sp nov, a novel moderately thermophilic, Fe(III)-reducing bacterium of the order Clostridiales. (external link)
- Nils-Kåre Birkeland; Peter Schoenheit; Lianna Poghosyan et al. (2017). Complete genome sequence analysis of Archaeoglobus fulgidus strain 7324 (DSM 8774), a hyperthermophilic archaeal sulfate reducer from a North Sea oil field. (external link)
- Srisuda Chaikitkaew; Supattra In-Chan; Apinya Singkhala et al. (2022). Clostridium thailandense sp. nov., a novel CO2-reducing acetogenic bacterium isolated from peatland soil. (external link)
- Fatema Moni Chowdhury; Mohammed Ziaur Rahman; Md Murshed Hasan Sarkar et al. (2017). Protection against shigellosis caused by shigella dysenteriae serotype 4 in Guinea pigs using escherichia albertii dm104 as a live vaccine candidate strain. (external link)
- Nils-Kåre Birkeland; Hilde Ånensen; Ingeborg Knævelsrud et al. (2002). Methylpurine DNA glycosylase of the hyperthermophilic archaeon Archaeoglobus fulgidus. (external link)
- Supachai Nitipan; Chonticha Mamimin; Nugul Intrasungkha et al. (2014). Microbial community analysis of thermophilic mixed culture sludge for biohydrogen production from palm oil mill effluent. (external link)
- Tajul Islam; Vigdis Lid Torsvik; Øivind Larsen et al. (2016). Acid-tolerant moderately thermophilic methanotrophs of the class Gammaproteobacteria isolated from tropical topsoil with methane seeps. (external link)
- Ani Saghatelyan; Hovik Panosyan; Armen Trchounian et al. (2021). Characteristics of DNA polymerase I from an extreme thermophile, Thermus scotoductus strain K1. (external link)
- Edvard S Falk; Solgun M Bygdeman; Nils Kåre Birkeland et al. (1988). Genotypes and phenotypes of ß-lactamase producing strains of Neisseria gonorrhoeae from African countries. (external link)
- Sompong O-Thong; Poonsuk Prasertsan; Nugul Intrasungkha et al. (2008). Optimization of simultaneous thermophilic fermentative hydrogen production and COD reduction from palm oil mill effluent by Thermoanaerobacterium-rich sludge. (external link)
- Anna A. Perevalova; Tatyana V. Kolganova; Nils-Kåre Birkeland et al. (2008). Distribution of Crenarchaeota Representatives in Terrestrial Hot Springs of Russia and Iceland. (external link)
- Ingeborg Knævelsrud; Sabina Kazazic; Nils-Kåre Birkeland et al. (2014). The pH optimum of native uracil-DNA glycosylase of Archaeoglobus fulgidus compared to recombinant enzyme indicates adaption to cytosolic pH. (external link)
- Chonticha Leamdum; Nantharat Phruksaphithak; Chaisit Niyasom et al. (2025). Enriched anoxic methanotrophic consortium augmentation for mitigating methane emissions in rainfed systems and climate-neutral rice production. (external link)
- Michael Karlstrøm; Ida Helene Steen; Gudrun Tibbelin et al. (2002). Crystallization and preliminary X-ray structure analysis of isocitrate dehydrogenase from two hyperthermophiles, Aeropyrum pernix and Thermotoga maritima. (external link)
- Ida Helene Steen; Torleiv Lien; Marit Madsen et al. (2002). Identification of cofactor discrimination sites in NAD-isocitrate dehydrogenase from Pyrococcus furiosus. (external link)
- Runar Stokke; Dominique Madern; Anita-Elin Fedøy et al. (2007). Biochemical characterization of isocitrate dehydrogenase from Methylococcus capsulatus reveals a unique NAD(+)-dependent homotetrameric enzyme. (external link)
- Øyvind Larsen; Torleiv Lien; Nils-Kåre Birkeland (2001). A novel organization of the dissimilatory sulfite reductase operon of Thermodesulforhabdus norvegica verified by RT-PCR. (external link)
- Ida Helen Steen; Dominique Madern; Mikael Karlstrøm et al. (2001). Comparison of Isocitrate Dehydrogenase from Three Hyperthermophiles Reveals Differences in Thermostability,Cofactor Specificity,Oligomeric State, and Phylogenetic Affiliation. (external link)
- Gyri Teien Haugland; J.H. Shin; Nils-Kåre Birkeland et al. (2006). Stimulation of MCM helicase activity by a Cdc6 protein in the archaeon Thermoplasma acidophilum. (external link)
- Hovik Panosyan; Armine Margaryan; Nils-Kåre Birkeland (2020). Geothermal springs in Armenia and Nagorno-Karabakh: potential sources of hydrolase-producing thermophilic bacilli. (external link)
- Sonja-Verena Albers; Nils-Kåre Birkeland; Arnold J.M. Driessen et al. (2009). SulfoSYS (Sulfolobus Systems Biology): towards a silicon cell model for the central carbohydrate metabolism of the archaeon Sulfolobus solfataricus under temperature variation. (external link)
- Oddmund Johan Emmerhoff; Hans-Petter Klenk; Nils-Kåre Birkeland (1998). Characterization and sequence comparison of temperature-regulated chaperonins from the hyperthermophilic archaeon <I>Archaeoglobus fulgidus</I>. (external link)
- Ida Helene Steen; Marit Steine Madsen; Nils-Kåre Birkeland et al. (1998). Purification and characterization of a monomeric isocitrate dehydrogenase from the sulfate-reducing bacterium Desulfobacter vibrioformis and demonstration of the presence of a monomeric enzyme in other bacteria. (external link)
- Ida Helene Steen; Torleiv Lien; Nils-Kåre Birkeland (1997). Biochemical and phylogenetic characterization of isocitrate dehydrogenase from a hyperthermophilic archaeon, Archaeoglobus fulgidus. (external link)
- Nils Kåre Birkeland; Helge Holo (1993). Transduction of a Plasmid Carrying the Cohesive End Region from Lactococcus lactis Bacteriophage ΦLC3. (external link)
- Nils Kåre Birkeland; Boyke Bunk; Cathrin Spröer et al. (2021). Thermococcus bergensis sp. nov., a Novel Hyperthermophilic Starch-Degrading Archaeon. (external link)
Academic literature review
- Huub J.M. Op den Camp; Tajul Islam; Matthew B. Stott et al. (2009). Environmental, genomic and taxonomic perspectives on methanotrophic Verrucomicrobia. (external link)
- Ronald Halim; Ajay Iyer; Sara M. Esteves et al. (2025). Is ‘waste’ an appropriate concept in a sustainable bioeconomy?. (external link)
- Ani Saghatelyan; Armine Margaryan; Hovik Panosyan et al. (2021). Microbial Diversity of Terrestrial Geothermal Springs in Armenia and Nagorno-Karabakh: A Review. (external link)
Master’s thesis
- Trude With; Nils-Kåre Birkeland (2014). Analyses of Thermotogales secretomes. (external link)
- Lianna Poghosyan; Nils-Kåre Birkeland (2015). Prokaryotic diversity in an Armenian geothermal spring using metagenomics, anaerobic cultivation and genome sequencing. (external link)
- Sarah Marie Stoppel; Nils-Kåre Birkeland (2017). Molecular analysis of Kosmotoga olearia, a deep-branching anaerobic thermophile: Transformation trials and transcriptomics. (external link)
- Ruben Javier Lopez; Nils Kåre Birkeland (2018). Isolation and characterization of a new keratinolytic Fervidobacterium pennivorans strain from a hot spring in Tajikistan. (external link)
- Edoardo Mandolini; Nils Kåre Birkeland; Ruben Javier Lopez (2020). Breakdown of keratin-laden biomass waste by the thermophilic bacterium Fervidobacterium pennivorans strain T. (external link)
- Oda Barth Vedøy; Nils-Kåre Birkeland (2015). The Hfq RNA chaperone in the deep-branching Thermotogales lineage: Attempts to reveal its biological role. (external link)
- Ani Saghatelyan; Armen H. Trchounian; Hovik Panosyan et al. (2014). Study of microbiota of Karvachar (Nagorno Karabakh) geothermal spring and characterization an aerobic nonsporeforming bacterial isolate, Thermus scotoductus strain K1. (external link)
- Pargev Hovhannisyan; Armen Trchounian; Hovik Panosyan et al. (2016). Genome analysis and cloning of amylase gene of Anoxybacillus sp. strain K-1 isolated from Karvachar geothermal spring. (external link)
- Ani Azaryan; Armen H. Trchounian; Hovik Panosyan et al. (2018). Genome analysis and study of some biochemical peculiarities of Haloarcula sp. strain Salt stone-1 isolated from Avan salt deposit. (external link)
- Roshan Khadka; Nils-Kåre Birkeland (2012). Characterization of the pmoB2d1 domain of the particulate methane monooxygenase B2 subunit from ‘Methylacidiphilum kamchatkense’ Kam1. (external link)
- Helge Erikstad; Nils-Kåre Birkeland; Sigmund Jensen (2010). Differensiert uttrykk av metan monooxygenase genene i den termoacidofile bakterien Methylacidiphilum kamchatkense. (external link)
- Maria Fernanda Goicochea Durand; Nils Kåre Birkeland (2022). Diversity of psychrophilic methanotrophs from the Barents Sea seabed revealed by enrichments and reconstruction of metagenome-assembled genomes. (external link)
- Sudeep Karki; Antonio Garcia-Moyano; Nils-Kåre Birkeland (2015). Molecular cloning, purification, structural study and substrate identification of thermostable sugar aminotransferases. (external link)
- Anders Schouw; Nils-Kåre Birkeland (2008). Isolering og karakterisering av nye termofile bakteriestammer fra et oljereservoar i det sydlige Sudan. (external link)
- Asia Mohamed; Nils Kåre Birkeland (2025). Isolation and molecular characterization of indigenous cyanide-degrading bacteria and a carbon-nitrogen hydrolase from gold mining areas in Sudan. (external link)
- Anne Marie Lerang; Nils-Kåre Birkeland (2014). Cultivation and genomics of extremophiles from a deep and hot North Sea oil reservoir. (external link)
- Yong Yan Lao; Nils-Kåre Birkeland (2015). Secretome analysis of the deep-branching thermophilic Thermotogae bacterium, Kosmotoga olearia. (external link)
- Eirin Lunden Jenssen; Nils-Kåre Birkeland (2009). Molecular characterization of an environmental bacterial isolate with strong serological cross-reaction with Shigella boydii 15. (external link)
- Natalie Bennett Smestad; Nils-Kåre Birkeland; Helge Andre Erikstad (2014). Phylogeny and diversity of new isolates of aerobic thermoacidophilic methane oxidizing Verrucomicrobia. (external link)
- Kjetil Dale; Antonio Garcia-Moyano; Nils-Kåre Birkeland (2015). Functional and structural analysis of split and full-length transketolase enzyme isoforms, from the anaerobic thermophilic bacterium Thermovirga lienii. (external link)
- Faustina Asare; Nils-Kåre Birkeland (2015). Analysis of the O-antigen gene clusters from the Shigella-cross-reacting strains, Escherichia albertii DM104 and Escherichia fergusonii Iso10, candidates for live shigellosis vaccine development. (external link)
- Gohar Vardanyan; Hovik Panosyan; Nils Kåre Birkeland (2015). Isolation, identification and characterization of lipase producing thermophilic bacilli from Armenian geothermal springs. (external link)
- Marte Innselset Flydal; Nils-Kåre Birkeland; Gyri Teien Haugland (2005). Characterization and thermostability of cell division control protein 6 from (hyper)thermophilic Archaea. (external link)
Journal corrigendum
- Thulani P. Makhalanyane; Angel Valverde; Nils-Kåre Birkeland et al. (2014). Erratum: Using network analysis to explore co-occurrencepatterns in soil microbial communitie (ISME Journal (2014) 8 (952) DOI:10.1038/ismej.2013.236). (external link)
- Thulani P. Makhalanyane; Angel Valverde; Nils-Kåre Birkeland et al. (2014). Erratum: Evidence for successional development in antarctic hypolithic bacterial communities (ISME Journal (2014) 8 (952) DOI:10.1038/ismej.2013.230). (external link)
Lecture
- Anna Hakobyan; Hovik Panosyan; Armen H. Trchounian et al. (2014). Identification of halophilic Archaea from the Avan salt mine in Armenia using a polyphasic approach including 16S rRNA gene sequence polymorphism. (external link)
- Nicoleta Boteva; Margarita Kambourova; Nils-Kåre Birkeland (2016). Diversity and biotechnological potential of microbial communities in Bulgarian hot springs based on metagenomic analyses. (external link)
- Hiromi Ogino; Sonoko Ishino; Nils-Kåre Birkeland et al. (2015). Cdc45-independent activation of replicative helicase in the thermophilic archaeon, Thermoplasma acidophilum. (external link)
- Nils-Kåre Birkeland (2015). Chemical strategies for adaptations in extremophiles. (external link)
- Nils-Kåre Birkeland; D. Lillehaug (1994). Molecular characterization of the lactococcal bacteriophage phi-LC3: Analysis of the integrative and host lysis regions. (external link)
- Nils-Kåre Birkeland (2014). Archaea; The third domain of life. Diversity and temperature adaptations. (external link)
- Nils-Kåre Birkeland (2006). Sulfatreduserende bakterier - venner eller fiender?. (external link)
- Nils-Kåre Birkeland (2000). Termofile mikroorganismer: nøkkelen til livets opprinnelse?. (external link)
- Nils-Kåre Birkeland (1997). Thermostable dehydrogenases from Archaeoglobus fulgidus. (external link)
- Nils-Kåre Birkeland (2015). Diversity of Extremophiles. (external link)
- Nils-Kåre Birkeland (2006). Extremophiles. (external link)
- Nils-Kåre Birkeland (2011). Citation, references and plagiarism. (external link)
- Øivind Larsen; Victoria B. Urtegaard; Torleiv Lien et al. (1998). Detection of sulfate- and sulfite-reducing bacteria using dissimilatory sulfite reductase as a target gene. (external link)
- Ani Saghatelyan; Hovik Panosyan; Armen H. Trchounian et al. (2014). Investigation of microbial diversity of geothermal springs in Nagorno-Karabakh based on metagenomic and culture-based approaches. (external link)
- Nils-Kåre Birkeland (2009). Stability of biomolecules in hot environments; lessons from thermophiles. (external link)
- Nils-Kåre Birkeland (2011). Samarbeid med Yerevan State University, Armenia, på mikrobiell biodiversitet i ekstreme miljø. (external link)
- Antonio Garcia-Moyano; Nils-Kåre Birkeland (2018). Disulfide isomerases for biotechnology. (external link)
- Helge Andre Erikstad; Natalie Bennett Smestad; Nils-Kåre Birkeland (2015). Methane oxidation by extremophilic verrucomicrobia. (external link)
- Nils-Kåre Birkeland (2009). Extremophilic microorganisms; basic concepts. (external link)
Academic book chapter
- Armine Margaryan; Grigor Shahinyan; Pargev Hovhannisyan et al. (2018). Geobacillus and Anoxybacillus spp.from Terrestrial Geothermal Springs Worldwide: Diversity and Biotechnological Applications. (external link)
- Armine Margaryan; Hovik Panosyan; Nils Kåre Birkeland (2021). Heavy Metal Resistance in Prokaryotes: Mechanism and Application. (external link)
- Hovik Panosyan; Armine Margaryan; Lianna Poghosyan et al. (2018). Microbial Diversity of Terrestrial Geothermal Springs in Lesser Caucasus. (external link)
- Ida Helen Steen; Hilde Hvoslef; Torleiv Lien et al. (2001). Isocitrate Dehydrogenase, Malate Dehydrogenase, and Glutamate Dehydrogenase from Archaeoglobus fulgidus. Hyperthermophilic Enzymes, Part B. Michael W.W.Adams and Robert M. Kelly (eds.). (external link)
- Nils-Kåre Birkeland (2005). Sulphate-reducing Bacteria and Archaea. (external link)
- Nils-Kåre Birkeland (2004). The Microbial Diversity of Deep Subsurface Oil Reservoirs. (external link)
- Natia Geliashvili; Ekaterine Jaiani; Marina Tediashvili et al. (2021). Taxonomic Characteristics of Dominant Microbial Communities in Hot Spring Sediments in Western Georgia. (external link)
- Rohit Sharma; Vishal Thakur; Monika Sharma et al. (2013). Biocatalysis through thermostable lipases: adding flavor to chemistry. (external link)
- Ani Saghatelyan; Hovik Panosyan; Nils Kåre Birkeland (2021). The Genus Thermus: A Brief History of Cosmopolitan Extreme Thermophiles: Diversity, Distribution, Biotechnological Potential and Applications. (external link)
- Akzhigit Mashzhan; Ruben Javier Lopez; Aida Kistaubayeva et al. (2021). Analysis and Characteristics of Thermal Springs in Kazakhstan. (external link)
- Munavvara Dzhuraeva; Armine A. Margaryan; Chandini Murarilal Ratnadevi et al. (2021). Microbial Diversity of High-Altitude Geothermal Springs in Tajikistan. (external link)
Doctoral thesis (PhD)
- Apinya Singkhala; Sompong O-Thong; Nils Kåre Birkeland (2018). Metagenomics and Isolation of Thermophilic Cellulase - producing Bacteria from Thermophilic High Solid Digestion Condition. (external link)
- Nikoleta Boteva; Margarita Kambourova; Nils Kåre Birkeland (2021). Diversity and biotechnological potential of thermophilic microorganisms from Bulgarian hot springs. (external link)
- Fatema Moni Chowdhury; Chowdhury Rafiqul Ahsan; Nils Kåre Birkeland (2013). Determination of virulence and pathogenicity of environmental Shigella-like isolates and evaluation of possible vaccine strains. (external link)
- Nafisa Azmuda; Sirajul Islam Khan; Nils Kåre Birkeland (2013). Diversity and survival of Escherichia coli and Shigella-like bacteria in the aquatic environments of Bangladesh. (external link)
- Gyri Teien Haugland; Nils-Kåre Birkeland (2008). Regulation of DNA replication in Archaea; Functional analysis of DNA replication initiation proteins in Thermoplasma acidophilum. (external link)
- Mohammed Ziaur Rahman; Sirajul Islam Khan; Nils Kåre Birkeland (2010). Genotypic and phenotypic diversity of environmental Shigella-like bacteria isolated from freshwater sources in Bangladesh. (external link)
- Selina Akter; Sirajul Islam Khan; Nils Kåre Birkeland (2013). Adaptation and survival of Escherichia coli in tropical aquatic environment. (external link)
- Tone Aspevik; Åge Oterhals; Nils-Kåre Birkeland (2016). Fish protein hydrolysates based on Atlantic salmon by-products -Enzyme-cost efficiency and characterization of sensory, surface-active and nutritional properties. Dissertation for the degree of phisosophiae doctor (PhD). (external link)
- Anita-Elin Fedøy; Nils-Kåre Birkeland (2014). Structure-function analysis of isocitrate dehydrogenase subfamily II: Adaptations to hot and cold. (external link)
- Håkon Dahle; Nils-Kåre Birkeland (2007). Microbiological analyses of produced water from a high-temperature oil formation in the North-Sea. (external link)
- Ruben Javier Lopez; Nils Kåre Birkeland (2025). A multi-omics approach to Fervidobacterium, a group of thermophilic feather-degrading anaerobes. (external link)
- Sompong O-Thong; Poonsuk Prasertsan; Nils Kåre Birkeland (2007). Optimization and microbial community analysis for production of biohydrogen from palm oil mill effluent by thermophilic fermentative process. (external link)
- Nils Kåre Birkeland (1992). Control of bacteriophage P2 gene expression: regulation of middle and late transcription. (external link)
- Tajul Islam; Nils-Kåre Birkeland (2009). Discovery of novel methanotrophs from extreme environments. (external link)
- Armine Margaryan; Hovik Panosyan; Nils Kåre Birkeland (2014). Microbiota of ore rock of Armenian copper and gold mines, isolation, identification and metal resistance mechanisms of heavy metal resistant bacilli. (external link)
- Srisuda Chaikitkaew; Sompong O-Thong; Nils Kåre Birkeland (2021). Development of Simultaneous Biogas Upgrading and Organic Compounds Production by CO2 Fixing Bacterium. (external link)
- Ingeborg Knævelsrud; Nils-Kåre Birkeland (2006). DNA Base Excision Repair of the Hyperthermophilic Archaeon Archaeoglobus fulgidus. (external link)
- Runar Stokke; Nils-Kåre Birkeland; Ida Helene Steen (2006). Isocitrate dehydrogenase from extremophiles; Molecular adaptations to high temperatures. (external link)
Book anthology
- Dilfuza Egamberdieva; Nils-Kåre Birkeland; Hovik Panosyan et al. (2018). Extremophiles in Eurasian Ecosystems: Ecology, Diversity, and Applications. (external link)
- Dilfuza Egamberdieva; Nils Kåre Birkeland; Wen-Jun Li et al. (2021). Microbial Communities and their Interactions in the Extreme Environment. (external link)
Editorial/Leader article
- Hongchen Jiang; Wen-Jun Li; Nils Kåre Birkeland et al. (2023). Editorial: Thermophilic and halophilic extremophiles in Eurasian environments, volume II. (external link)
- Hongchen Jiang; Wen-Jun Li; Nils-Kåre Birkeland et al. (2019). Thermophilic and Halophilic Extremophiles in Eurasian Environments. (external link)
Radio or TV participation
Projects
Current and previous projects, networks and funding for advanced equipment:
2021 - 2024: ThermoK: Thermophilic break-down of keratin-laden biomass waste. ERA-NET Cofund on Food Systems and Climate (https://www.uib.no/en/thermok).
2018 - 2022: (Eurasian - Norwegian) network for research-based higher education in microbial biotechnology. Diku.
2017 - 2021: Methane oxidation by extremophilic Verrucomicrobia adapted to geothermal
environments. Research Council of Norway. FRIMEDBIO.
2017 - 2020: Thermostable isomerase processes for biotechnology (TIPs). ERA-IB/BIOTEK2021.
2017 - 2019: (Eurasian - Norwegian) Network for improving research based higher education in basic and applied microbiology.
2015 - 2016: Extremophilic Archaea in Bulgarian geothermal environments. BG09 Programme. EEA Scholarships Fund.
2013 - 2016: THERMOGENE - Novel thermostable enzymes for industrial biotechnology. NFR/ERA-NET Industrial Biotechnology project
2014 - 2015: Integrative analysis of extremophiles in search for new biotechnological solutions. NILS Science and Sustainability (ES07). EEA Grant.
2013 - 2015: Eurasian-Norwegian network for higher education and research in environmental microbiology and biotechnology
2011 - 2015: Cooperation in environmental microbiology between Armenia and Norway. SIU
2012: Geomicrobiology for bioenergy. The Agricultural Research Development Agency, Thailand.
2011 - 2014: Cooperation with Armenia in microbiology of extreme environments. SIU/UD. 1.8 mill NOK.
2011-2014: Biological methane oxidation by methanotrophic Verrucomicrobia under hot and acidic conditions; evolution of an ancient metabolic trait. NFR, 3.5 mill NOK.
2009-2012: Subsurface metagenomics, functional microbial diversity analysis and gene discovery in deep and hot petroleum reservoirs. VISTA. 2.5 mill NOK.
2010: Is methane oxidation an ancient metabolic trait? Centre for Geobiology, UiB. 180.000 NOK.
2007-2010: Metagenomics and gene discovery in Antarctic terrestrial habitats. The Research Council of Norway/The South-Africa programme. 898.000 NOK.
2009-2012: The Nordic Archaea Network. NordForsk.
2008: Comparative genomics of Archaeoglobus fulgidus strain 7324, a subsurface hyperthermophilic sulfate-reducing archaeon isolated from a hot North-Sea oil-well. University of Bergen/ Friforsk. 300.000 NOK.
2003-2011: Assessment of microbial pollution and diversity of Escherichia coli and Shigella in freshwater resources in Bangladesh. NUFU. 6.5 mill NOK.
2007-2010: Silicon Cell Model for the central carbohydrate metabolism of the archaeon Sulfolobus solfataricus under temperature variation. SysMo.
2004-2007: Metanspisende bakterier i havbunnsmiljø. VISTA. 1.5 millNOK.
2006-2007: Archaeoglobus fulgidus strain 7324: a unique archaeal sulfate reducer. The Research Council of Norway/ DAAD. 50.000 NOK.
2003-2007: Natural gas and biotechnology (NABI): bioprospecting of methane-oxidizing bacteria. The Norwegian Research Council/ Bioprospecting programme. 6.7 mill NOK.
2003-2007: Biological adaptations to extreme temperatures. The Norwegian Research Council/ Strategic university programme. 5.9 mill NOK.
2003-2007: Archaeal cell-cycle regulation. The Research Council of Norway. 1.7 mill NOK.
2006: Robot for automated picking of bacterial colonies (GenePix2xt). The Research Council of Norway. 1.7 mill NOK.
2002-2006: Biotechnology of intraterrestrial microorganisms. The Research Council of Norway/ Bioprospecting. 1.6 mill NOK.
2003-2005: Reduction of toxic metals and radionuclides by thermophilic prokaryotes. INTAS. 450.000 NOK.
2002-2004: Reduction of metals by thermophilic prokaryotes. NATO. 100.000 NOK.
1999-2003: Biology of Thermophiles. Nordic network. NorFA. 1.5 mill NOK.
1997-2001: VIRTUE: Bioaktive substanser. Wallenbergfondet. 475.000 NOK.
1997-1999: Termoresistens hos Archaeoglobus. The Research Council of Norway. 288.000 NOK.
1996-1999: Dissimilatorisk sulfitt reduktase fra oljebakterier. The Research Council of Norway. 1.2 mill NOK.
1995: Iso-sitronsyre dehydrogenase i Desulfobacter. The Research Council of Norway. 412.000 NOK.
1994: Generell drifts- og utstyrsbevilgning. The Research Council of Norway. 150.000 NOK.