The overall theme in my research is to understand the physiology of microorganisms living in deep-sea hydrothermal vent systems by the use of culturing, molecular biology, biochemistry and geochemistry.

Specific questions that I address are:

What is the diversity of energy metabolisms of hydrothermal vents microorganisms?

How do they link the cycling of carbon, nitrogen and sulfur in the system?

Do they have enzymes useful in biotechnology?

https://tv.nrk.no/serie/schrodingers-katt/DMPV73000615/12-02-2015#t=14m24s

I teach BIO318, BIO299, BIO219, BIO214, BIO104

Current PhD and master students (main or co- supervisor)

MSc student Karoline Oksnes Austnes. Resolving biochemical properties of proteases of hydrothermal vent microorganisms

PhD-candidate Brenda Lizbeth Esteban Vazquesz (UiB, CDeepSea). Connectivity and adaptations of Pseudosetia griegi and Pseudosetia sp. (Gastropoda; Rissoidae) to chemosynthesis-based ecosystems along the Arctic Mid-Ocean Ridge

PhD-candidate Nguyen Trong Thuc (UiB, DeepSeaQuence). Diversity of biosynthetic gene clusters and antimicrobial peptides in Arctic deep-sea hydrothermal vent microbiomes

PhD-candidate Emily M Denny (UiB). Shaping of hydrothermal microbiomes in response to energy availability: An ecological investigation of variance of deep sea chemoautotrophic microbial diversity at different scales in connection with energy sources

PhD-candidate Monisha Bharate (UiB). The role of ecology, historical climate change and tectonic events on the evolution and diversification of extant rocky-shore marine species: The case of Smaragdinella snails

Graduated PhDs, MSc, Bio299

MSc Noemí Segura-Solé. Syntrophic interactions between methanotrophic archaea and sulfate-reducing bacteria in Arctic vents -2025

MSc Emilie Werness.  Enrichment of a new species of sulfate-reducing bacteria from the Loki´s Caste hydrothermal vent field -2025

BIO299 Noemi Segura. Metagenomic community analysis from a long-time deep sea sediment incubation -2024

MSc Emilie Kristine Nygaard. Identification, production and characterization of novel marine enzymes - 2024

MSc Ivan Patrick B. Tualla (IMBRSea) Identification, expression, and biochemical characterization of plastic-degrading enzymes from extremophilic bacteria at the Arctic Mid-Ocean Ridges (AMOR) deep-sea hydrothermal vents - 2024

PhD Petra Hribovsek (UiB, CDeepSea). Ecology and genomic diversity of iron-oxidizing bacteria at Arctic deep-sea hydrothermal vents. Lessons from genome-resolved metagenomics and microscopy -2024

PhD Victoria Røyseth (UiB). Discovery of novel marine clostripain-like proteases from Arctic hydrothermal vents – activation mechanism, substrate utilization and biotechnological aspects -2024

MSc Ramsha Iqbal. Heterologous production, purification and substrate usage of a variant of the marine globupain protease -2024

PhD Francesca Vulcano (UiB). Metagenomics-drive predictions in Archaea from hydrocarbon-rich Arctic hydrothermal systems - 2023

MSc Siri Charlotte Haugerud Rognan. Plastic degrading potential of Arctic Deep-Sea hydrothermal microbiomes - 2023

PhD Hasan Arsin (UiB, NorZymeD). Sequence-based enzyme discovery from marine microbial biodiversity: Multiple approaches for the heterologous expression of genes in Escherichia coli – 2021

MSc Sondre Olai Spjeld. Metagenomics-based discovery of novel carbohydrate degrading enzymes from deep-sea hydrothermal in situ enrichments; expression, purification and characterization – 2021

MSc Stian Torset. The distribution of primary producing functional traits and NAD(H) maintenance methods across geochemical energy landscapes - 2021

MSc Ida-Marie Lervåg. Characterization of novel viral proteins - A potential for bioprospecting - 2019

MSc Hannah Babel. Metabolic properties of hyperthermophilic sulfate-reducing archaea of the genus Archaeoglobusin deep-sea hydrothermal vent systems -2019

PhD Anders Schouw (UiB, Biogoldmine). Isolation and genome analysis of Vallitalea guaymasensis L81; energy metabolism, syntrophy and applications - 2018

PhD Jan Vander Roost (UiB, CGB). Iron oxidizing microorganisms at the Jan Mayen hydrothermal vent fields - 2018

PhD Sven Le Moine Bauer (UiB, CGB). Impact of environmental parameters and dispersal on microbial communities in hydrothermal areas of the Nordic Seas -2017

Msc Andreas Gilje Sjøberg. Physiological characterization of a novel strain within Rhodobacteraceae, isolated from a biofilm sample on a barite chimney at the Loki´s Castle Vent Field. - 2016

PhD Juliane Wissuwa (UiB, Biogoldmine). The Arctic mid-Ocean Ridge Vent Fields - A valuable Resource for Marine Bioprospecting? -2016

MSc Sepideh Mostafavi. Metagenome-based analysis of the functional potential of a marine sediment community dominated by ANME-2c. -2015

MSc Sophie Radeke. Diversity, function and interactions of anaerobic methanotrophs in Loki ́s Castle Vent Field. -2015

MSc Victoria Røyseth. Isolering og fysiologisk karakterisering av Marinitoga sp. stamme 2PyrY55-1ᵀ. -2015

PhD William P. Hocking (UiB). Energy conservation mechanisms in the sulfate respiring  archaeon Archaeoglobus fulgidus VC16-assessed by transcriptome analyses and comparative genomics. -2015

PhD Anita-Elin Fedøy (UiB). Structure-function analysis of isocitrate dehydrogenase subfamily II: Adaptations to hot and cold –2014

PhD Steffen L Jørgensen (UiB, CGB). Linking microbial community structure and geochemistry in deep-sea sediments - 2013

PhD Irene Roalkvam (UiB, VISTA). Diversity, stratification and in situ metabolism of anaerobic methanotrophic archaea in Nyegga cold seeps  - 2012

MSc Elisabeth Machteld Biersma. Microbial diversity and function associated with a black smoker from Loki´s Castle vent field. - 2012

MSc Carina Magnussen. Genekspresjon av karbonmonoksid dehydrogenase/acethyl-CoA syntase komplekset og sat-ORF2-aprBA operonet i Arhcaeoglobus fulgidus. - 2010

MSc Irene Roalkvam. Proteomikkstudier av den sulfatreduserende hypertermofile arkéen Archaeoglobus fulgidus- 2008

MSc Solveig Hoem.Diversitet og utbredelse av sulfatreduserende og svoveloksiderende prokaryoter i hydrothermale miljø.  - 2008

PhD Runar Stokke (UiB). Isocitrate dehydrogenase from extremophiles: Molecular adaptations to high temperatures. - 2007

MSc William P. Hocking. Kinetic characterization revealing a possible NADP substrate inhibition mechanism in isocitrate dehydrogenase of the hyperthermophilic archaeon Aeropyrum pernix.- 2007

Conference poster

• Øivind Larsen; Hasan Arsin; Runar Stokke et al. (2017). Discovery of proteases for bioconversion of marine biomass. (external link)
• Angele Arlette H. Abboud; Runar Stokke; Ida Helene Steen et al. (2013). Expert system for mining and sifting novel enzyme sequences in metagenomics data. (external link)
• Irene Roalkvam; Runar Stokke; Kari Espolin Fladmark et al. (2008). The hyperthermophilic sulfate-reducing archaeon Archaeoglobus fulgidus; a proteomics study on the shift between chemoorganoheterotrophic and chemilithoautotrophic growth. (external link)
• Asbjørg Karine Drønen; Ida Helene Steen; Turid Liengen et al. (2013). Microbial monitoring of Sub Sea injection water in the North Sea. (external link)
• Marianne Slang Jensen; Lasse Fredriksen; Bjørn Altermark et al. (2017). Bioprospecting of enzymes for processing lignocellulosic biomass. (external link)
• Hanna-Kirsti S. Leiros; Angel L. Pey; M Innselset et al. (2008). Crystal Structure of phenylalanine hydroxylase from Colwellia psychrerythraea 34H reveals a monomeric cold active enzyme with local flexibility around the active site and high overall stability. (external link)
• Ingunn Hindenes Thorseth; Ida Helene Steen; Benjamin Eickmann et al. (2012). Microbial mediated formation of low-temperature hydrothermal barite chimneys. (external link)
• Emily Maria Denny; Achim Mall; Petra Hribovšek et al. (2022). Interpretation of microbial food webs from metagenomic data in deep-sea hydrothermal vents across the Arctic Mid-Ocean Ridge. (external link)
• Irene Roalkvam; Yifeng Chen; Frida Lise Daae et al. (2010). Vertical variations in predominance of Thaumarchaeota and anaerobic methanotrophs in methane seep sediments. (external link)
• Anita-Elin Fedøy; Mikael Karlstrøm; Rudolf Ladenstein et al. (2006). Biochemical characterization and structure analysis of extremophilic isocitrate dehydrogenase. (external link)
• Victoria Røyseth; Brianna M. Hurysz; Anna-Karina Kaczorowska et al. (2023). Activation mechanism and activity of globupain, a thermostable C11 protease from the Arctic Mid-Ocean Ridge hydrothermal system. (external link)
• Angele Arlette H. Abboud; Runar Stokke; Ida Helene Steen et al. (2014). Automated Enzyme Function Inference in Archaea Genomes:comparison of PRIAM and EFICAZ. (external link)
• Asbjørg Karine Drønen; Irene Roalkvam; Turid Liengen et al. (2013). Better handling of microbial influenced corrosion during operation. (external link)
• Hasan Arsin; Anita-Elin Fedøy; Victoria Røyseth et al. (2020). Enzyme discovery from the edge of (sequence) space. (external link)
• Gro Elin Kjæreng Bjerga; Øivind Larsen; Hasan Arsin et al. (2014). An enzyme discovery and expression pipeline for the conversion of Norwegian biomasses. (external link)
• Ida Helene Steen; Anita-Elin Fedøy; Nannan Yang et al. (2006). Biochemical characterization and structure analysis of extremophilic isocitrate dehydrogenase. (external link)
• William Peter Hocking; Irene Roalkvam; Runar Stokke et al. (2015). New insights into energy conservation mechanisms in the sulfate respiring archaeon Archaeoglobus fulgidus VC16. (external link)
• Petra Hribovšek; Emily Maria Denny; Håkon Dahle et al. (2022). Sheath-forming Zetaproteobacteria abundant in black smoker chimney mats at the newly discovered Fåvne hydrothermal vent field. (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)
• Irene Roalkvam; Asbjørg Karine Drønen; Runar Stokke et al. (2014). Isolation, characterization and genome analysis of a nitrate reducing Arcobacter sp. isolated from saline aquifer water. (external link)
• Trong Thuc Nguyen; Ida Helene Steen; Runar Stokke (2024). Exploring a Microbial Frontier: Unveiling Potential for Novel Antimicrobial Compounds from Arctic Deep-Sea Hydrothermal Biofilms. (external link)
• Karine Drønen; Irene Roalkvam; Janiche Beeder et al. (2015). Heavy nitrate corrosion in anarobe aquifer injection water biofilm: Process modeling. (external link)
• Jan Kjølhede Vester; Runar Stokke; Ida Helene Steen et al. (2018). High novelty in secreted amylases from hydrothermal vent field. (external link)
• Haflidi Haflidason; Ida Helene Steen; Irene Roalkvam et al. (2010). The sulfate-methane transition zone (SMTZ) in passive and active gas hydrate bearing sediments at Nyegga on the Mid-Norwegian margin: a multidisciplinary geological, geobiological and geochemical study. (external link)
• Håkon Dahle; Irene Roalkvam; Steffen Leth Jørgensen et al. (2010). Microbial community structure of biomats and chimney walls of the Loki’s Castle hydrothermal field at 73°N. (external link)
• Steffen Leth Jørgensen; Anders Lanzén; T Baumberger et al. (2010). Microbial community composition in the deep-sea sediments flanking the Loki’ castle at the Knipovitch ridge system. (external link)
• Hasan Arsin; Gro Elin Kjæreng Bjerga; Runar Stokke et al. (2015). Screening proteases for applications on fish industry by-products. (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)
• Petra Hribovšek; Emily Maria Denny; Håkon Dahle et al. (2022). Sheath-forming Zetaproteobacteria abundant in black smoker chimney mats at the newly discovered Fåvne hydrothermal vent field. (external link)
• Anders Schouw; Gunhild Bødtker; Ida Helene Steen (2014). Crude oil degradation to methane gas by a waste water consortium. (external link)
• Benjamin Eickmann; Irene Roalkvam; Tamara Baumberger et al. (2012). A combined SEM, isotope, and biomolecular study to unravel the formation of barite chimnneys at the Loki's Castle vent field. (external link)
• Trong Thuc Nguyen; Ida Helene Steen; Runar Stokke (2023). More than a drop in the ocean: biosynthetic potential and antimicrobial products from the deep-sea microbes. (external link)
• Petra Hribovšek; Emily Maria Denny; Thomas Øfstegaard Viflot et al. (2021). Iron Oxidizers and Sheath-forming Zetaproteobacteria in Biofilms of the Newly Discovered Fåvne Hydrothermal Vent Field. (external link)
• Jan Pieter Vander Roost; Ingunn Hindenes Thorseth; Rolf B. Pedersen et al. (2014). Comparison of microbial communities within iron-containing mats at different geochemical settings in the Jan Mayen vent field. (external link)
• Hasan Arsin; Anita-Elin Fedøy; Victoria Røyseth et al. (2020). Bringing deep-sea enzymes to light. (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)
• Ida Helene Steen; Runar Stokke; Juliane Wissuwa et al. (2014). Exploring the biotechnological potential of microbial communities in the Jan Mayen Vent Fields by use of in situ incubation chambers. (external link)
• Juliane Wissuwa; Ida Helene Steen; Runar Stokke (2014). Screening of new alfa-amylases from deep-sea hydrothermal vents by multiple (meta)-genomic tools. (external link)
• William Peter Hocking; Irene Roalkvam; Runar Stokke et al. (2010). Transcriptome analysis of Arhcaeoglobus fulgidus VC-16 grown on differential substrates. (external link)
• Juliane Wissuwa; Ida Helene Steen; Runar Stokke (2014). Genomic sequencing analysis of a new thermophilic starch degrading Geobacilllus sp. isolate from AMOR hydrothermal vent system. (external link)
• Juliane Wissuwa; Ida Helene Steen; Runar Stokke (2014). Genomic sequencing analysis of a new thermophilic starch degrading Geobacillus sp. isolate from AMOR hydrothermal vent system. (external link)
• Anita-Elin Fedøy; Lisbeth Glærum; Marit Steine Madsen et al. (2005). Molecular adaptations of isocitrate dehydrogenase to extreme temperatures. (external link)
• Marianne S Jensen; Lasse Fredriksen; Bjørn Altermark et al. (2017). Discovery, characterization and engineering of bacterial thermostable cellulose-degrading enzymes. (external link)
• Runar Stokke; Bjørn Olav Steinsbu; Juliane Wissuwa et al. (2015). Isolation, characterization and genome sequencing of (hyper)thermophiles from the Arctic Mid-Ocean Ridge. (external link)
• Runar Stokke; Irene Roalkvam; Ida Helene Steen (2015). Metagenomics-based enzyme discovery. (external link)
• Steffen Leth Jørgensen; Anders Lanzén; Tamara Baumberger et al. (2011). High resolution community profiling of stratified sediments associated with Loki’s castle vent field at the Knipovitch spreading ridge. (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)
• Anna Perevalova; Ida Helene Steen; Runar Stokke et al. (2012). Molecular basis for polysaccharides degradation capabilities of Desulfurococcus fermentans, a hyperthermophilic crenarchaeon. (external link)
• Brenda Lizbeth Esteban Vazquez; Mari Heggernes Eilertsen; Jon Anders Kongsrud et al. (2023). Rissoid gastropods in Arctic CBEs. (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)
• Irene Roalkvam; Runar Stokke; Karine Drønen et al. (2015). Isolation, characterization and genome analysis of a nitrate reducing Arcobacter sp. isolated from injection water. (external link)
• Irene Roalkvam; Runar Stokke; William Peter Hocking et al. (2009). Decreased expression of ATP-sulfurylase and APS-reductase in Archaeoglobus fulgidus during respiration of hydrogen with thiosulfate. (external link)
• Katharina Sass; Ida Helene Steen; Runar Stokke (2022). Revealing the chitinolytic potential of microbial communities in Arctic deep-sea hydrothermal sediments.. (external link)
• Sven Le Moine Bauer; Ida Helene Steen; Ruth-Anne Sandaa et al. (2014). Microbial community changes within a chimney wall at the basalt-hosted Jan Mayen vent field (JMVF):Modeled predictions vs. Pyrosequencing data. (external link)
• Solveig Hoem; Håkon Dahle; Irene Roalkvam et al. (2010). Detection of methanotrophic archaea in a barite chimney at Loki’s Castle, the Arctic Mid-Ocean Ridge. (external link)
• Ida Helene Steen; Wissuwa Julianne; Bjørn Olav Steinsbu et al. (2013). Exploring the biotechnological potential of microbial communities in the Jan Mayen Vent Fields by use of in situ incubation chambers. (external link)
• Runar Stokke; Anders Lanzén; Ingunn Hindenes Thorseth et al. (2010). Metaproteomic analysis of a chemosynthetic hydrothermal vents community reveals insight into key-metabolic processes. (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)
• Steffen Leth Jørgensen; Anders Lanzén; T Baumberger et al. (2010). Microbial diversity in deep-sea sediments Influence of volcanism and hydrothermal activity. (external link)
• Håkon Dahle; Irene Roalkvam; Ingunn Hindenes Thorseth et al. (2012). Metatranscriptomic and phylogenetic analysis of bacterial mats growing on chimney surfaces at the Loki´s Castle hydrothermal field. (external link)
• Juliane Wissuwa; Runar Stokke; Anita-Elin Fedøy et al. (2015). Screening of new α-amylases from deep-sea hydrothermal vents by multiple (meta)-genomic tools. (external link)
• Ida Helene Steen; Nils-Kåre Birkeland; Torleiv Lien (1999). <I>Archaeoglobus fulgidus</I> Isocitrate Dehydrogenase, Malate Dehydrogenase and Glutamate Dehydrogenase. (external link)

Academic article

• Juliane Wissuwa; Runar Stokke; Anita-Elin Fedøy et al. (2016). Isolation and complete genome sequence of the thermophilic Geobacillus sp. 12AMOR1 from an Arctic deep-sea hydrothermal vent site. (external link)
• Juliane Wissuwa; Sven Le Moine Bauer; Ida Helene Steen et al. (2017). Complete genome sequence of Lutibacter profoundi LP1T isolatet from an Arctic deep-sea hydrothermal vent system. (external link)
• Karine Drønen; Irene Roalkvam; Janiche Beeder et al. (2014). Modeling of heavy nitrate corrosion in anaerobe aquifer injection water biofilm: A case study in a flow rig. (external link)
• Desiree Lisette Roerdink; Francesca Vulcano; Jan-Kristoffer Landro et al. (2023). Hydrothermal activity fuels microbial sulfate reduction in deep and distal marine settings along the Arctic Mid Ocean Ridges. (external link)
• Cristina Coscolin; Mónica Martínez-Martínez; Jennifer Chow et al. (2018). Relationships between substrate promiscuity and chiral selectivity of esterases from phylogenetically and environmentally diverse microorganisms. (external link)
• Francesca Vulcano; Cedric Jasper Hahn; Desiree Lisette Roerdink et al. (2022). Phylogenetic and functional diverse ANME-1 thrive in Arctic hydrothermal vents. (external link)
• Runar Stokke; Eoghan Reeves; Håkon Dahle et al. (2020). Tailoring hydrothermal vent biodiversity towards improved biodiscovery using a novel in-situ enrichment strategy. (external link)
• Karol Ciuchcinski; Anna-Karina Kaczorowska; Daria Biernacka et al. (2025). Computational pipeline for sustainable enzyme discovery through (re)use of metagenomic data. (external link)
• William Peter Hocking; Runar Stokke; Irene Roalkvam et al. (2014). Identification of key components in the energy metabolism of Archaeoglobus fulgidus by transcriptome analyses. (external link)
• Torleiv Lien; Marit Steine Madsen; Ida Helene Steen et al. (1998). Desulfobulbus rhabdoformis sp. nov., a sulfate reducer from a water-oil separation system. (external link)
• Runar Stokke; William Peter Hocking; Bjørn Olav Steinsbu et al. (2013). Complete genome sequence of the thermophilic and facultatively chemolithoautotrophic sulfate reducer Archaeoglobus sulfaticallidus strain PM70-1^T. (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)
• Irene Roalkvam; Steffen Leth Jørgensen; Yifeng Chen et al. (2011). New insight into stratification of anaerobic methanotrophs in cold seep sediments. (external link)
• Tim Urich; Anders Lanzén; Runar Stokke et al. (2014). Microbial community structure and functioning in marine sediments associated with diffuse hydrothermal venting assessed by integrated meta-omics. (external link)
• Sven Le Moine Bauer; Irene Roalkvam; Ida Helene Steen et al. (2016). Lutibacter profundi sp. nov., isolated from a deep-sea hydrothermal system on the Arctic Mid-Ocean Ridge and emended description of the genus Lutibacter. (external link)
• Karol Ciuchcinski; Runar Stokke; Ida Helene Steen et al. (2024). Landscape of the metaplasmidome of deep-sea hydrothermal vents located at Arctic Mid-Ocean Ridges in the Norwegian–Greenland Sea: ecological insights from comparative analysis of plasmid identification tools. (external link)
• Jessica Louise Ray; Michael Dondrup; Sejal Modha et al. (2012). Finding a needle in the virus metagenome haystack - micro-metagenome analysis captures a snapshot of the diversity of a bacteriophage armoire. (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)
• Anders Schouw; Francesca Vulcano; Irene Roalkvam et al. (2018). Genome analysis of Vallitalea guaymasensis strain L81 isolated from a deep-sea hydrothermal vent system. (external link)
• Monica Martínez-Martínez; Cristina Cascolín; Gerard Santiago et al. (2017). Determinants and Prediction of Esterase Substrate Promiscuity Patterns. (external link)
• Irene Roalkvam; Karine Drønen; Runar Stokke et al. (2015). Physiological and genomic characterization of Arcobacter anaerophilus IR-1 reveals new metabolic features in Epsilonproteobacteria. (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)
• Petra Hribovšek; Emily Maria Denny; Achim Mall et al. (2025). Adaptation strategies of iron-oxidizing bacteria Gallionella and Zetaproteobacteria crossing the marine–freshwater barrier. (external link)
• Victoria Røyseth; Brianna M. Hurysz; Hasan Arsin et al. (2025). Substrate profiling of marine-derived thermotolerant cysteine protease reveals unique cleavage preferences for industrial applications. (external link)
• Irene Roalkvam; Håkon Dahle; Yifeng Chen et al. (2012). Fine-scale community structure analysis of ANME in Nyegga sediments with high and low methane flux. (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)
• Runar Stokke; Irene Roalkvam; Anders Lanzén et al. (2012). Integrated metagenomic and metaproteomic analyses of an ANME-1-dominated community in marine cold seep sediments. (external link)
• Irene Roalkvam; Florian Bredy; Tamara Baumberger et al. (2015). Hypnocyclicus thermotrophus gen. Nov., sp. nov. isolated from a microbial mat in a hydrothermal vent field. (external link)
• Eva Ramirez-Llodra; Claudio Argentino; Maria Baker et al. (2022). Hot Vents Beneath an Icy Ocean: The Aurora Vent Field, Gakkel Ridge, Revealed. (external link)
• Victoria Røyseth; Brianna M. Hurysz; Anna-Karina Kaczorowska et al. (2023). Activation mechanism and activity of globupain, a thermostable C11 protease from the Arctic Mid-Ocean Ridge hydrothermal system. (external link)
• Lasse Fredriksen; Runar Stokke; Marianne Slang Jensen et al. (2019). Discovery of a Thermostable GH10 Xylanase with Broad Substrate Specificity from the Arctic Mid-Ocean Ridge Vent System. (external link)
• Petra Hribovšek; Emily Maria Denny; Håkon Dahle et al. (2023). Putative novel hydrogen- and iron-oxidizing sheath-producing Zetaproteobacteria thrive at the Fåvne deep-sea hydrothermal vent field. (external link)
• Håkon Dahle; Sven Le Moine Bauer; Tamara Baumberger et al. (2018). Energy landscapes in hydrothermal chimneys shape distribution of primary producers. (external link)
• Bjørn Olav Steinsbu; Victoria Røyseth; Ingunn Hindenes Thorseth et al. (2016). Marinitoga arctica sp. Nov., a thermophilic, anaerobic heterotroph isolated from a Mid-Ocean Ridge vent field. (external link)
• Hasan ARSIN; Andrius Jasilionis; Håkon Dahle et al. (2021). Exploring codon adjustment strategies towards Escherichia coli-based production of viral proteins encoded by HTH1, a novel prophage of the marine bacterium Hypnocyclicus thermotrophus. (external link)
• Katja Enberg; Ida Helene Steen; Ståle Ellingsen (2019). Me, myself and I -Teachers’ self-motivation and sense of responsibility determine the use of active learning methods. (external link)
• Cedric Jasper Hahn; Rafael Laso-Pérez; Francesca Vulcano et al. (2020). “Candidatus Ethanoperedens,” a thermophilic genus of archaea mediating the anaerobic oxidation of ethane. (external link)
• Hanna-Kirsti S. Leiros; AL Pey; M Innselset et al. (2007). Structure of phenylalanine hydroxylase from Colwellia psychrerythraea 34H, a monomeric cold active enzyme with local flexibility around the active site and high overall stability. (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)
• Trong Thuc Nguyen; Ida Helene Steen; Runar Stokke (2025). Remarkable biosynthetic capacity of Arctic hydrothermal biofilms. (external link)
• Anita-Elin Fedøy; AE Fedoy; Nannan Yang et al. (2007). Structural and functional properties of isocitrate dehydrogenase from the psychrophilic bacterium Desulfotalea psychrophila reveal a cold-active enzyme with an unusual high thermal stability. (external link)
• Morten Walløe Tvedt; Vincentius Gerardus Henricus Eijsink; Ida Helene Steen et al. (2016). The missing link in ABS: The relationship between resource and product. (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)
• Anders Schouw; Tove Leiknes Eide; Runar Stokke et al. (2016). Abyssivirga alkaniphila gen. nov., sp. nov., an alkane-degrading, anaerobic bacterium from a deep-sea hydrothermal vent system, and emended descriptions of Natranaerovirga pectinivora and Natranaerovirga hydrolytica. (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)
• 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)
• Kiira Vuoristo; Lasse Fredriksen; Maren Oftebro et al. (2019). Production, characterization, and application of an alginate lyase, AMOR_PL7A, from hot vents in the Arctic mid-ocean ridge. (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)
• Francesca Vulcano; Petra Hribovšek; Emily Maria Denny et al. (2023). Potential for homoacetogenesis via the Wood–Ljungdahl pathway in Korarchaeia lineages from marine hydrothermal vents. (external link)
• Runar Stokke; William Peter Hocking; Bjørn Olav Steinsbu et al. (2013). Complete genome sequence of the thermophilic and facultatively chemolithoautotrophic sulfate reducer Archaeoglobus sulfaticallidus PM70-1T. (external link)
• William Peter Hocking; Irene Roalkvam; Carina Magnussen et al. (2015). Assessment of the carbon monoxide metabolism of the hyperthermophilic sulfate-reducing archaeon Archaeoglobus fulgidus VC-16 by comparative transcriptome analyses. (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)
• Emma Tarrant; Isabel G Cormack; Charlotte E Hunter et al. (2026). Structure, function, and applications of two novel phage recombinases from extreme environments. (external link)
• Hanna-Kirsti S. Leiros; Anita-Elin Fedøy; Ingar Leiros et al. (2012). The complex structures of isocitrate dehydrogenase from Clostridium thermocellum and Desulfotalea psychrophila support a new active site locking mechanism. (external link)
• Giuliana Panieri; Claudio Argentino; Sofia P. Ramalho et al. (2023). An Arctic natural oil seep investigated from space to the seafloor. (external link)
• Jessica Siltberg-Liberles; Ida Helene Steen; Randi Myrseth Svebak et al. (2008). The phylogeny of the aromatic amino acid hydroxylases revisited by characterizing phenylalanine hydroxylase from Dictyostelium discoideum. (external link)
• Sven Le Moine Bauer; Andreas Gilje Sjøberg; Stephane L´Haridon et al. (2019). Profundibacter amoris gen. nov., sp. nov., a new member of the Roseobacter clade isolated from Loki's Castle Vent Field on the Arctic Mid-Ocean Ridge. (external link)
• Sven Le Moine Bauer; Anne Stensland; Frida Lise Daae et al. (2018). Water masses and depth structure prokaryotic and T4-like viral communities around hydrothermal systems of the Nordic Seas. (external link)
• Anton Stepnov; Lasse Fredriksen; Ida Helene Steen et al. (2019). Identification and characterization of a hyperthermophilic GH9 cellulase from the Arctic Mid-Ocean Ridge vent field. (external link)
• Håkon Dahle; Ingeborg Elisabet Økland; Ingunn Hindenes Thorseth et al. (2015). Energy landscapes shape microbial communities in hydrothermal systems on the Arctic Mid-Ocean Ridge. (external link)
• Petra Hribovšek; Emily Maria Denny; Achim Mall et al. (2024). Adaptation strategies of iron-oxidizing bacteria Gallionella and Zetaproteobacteria crossing the marine–freshwater barrier. (external link)
• Ruth-Anne Sandaa; Marius Rydningen Saltvedt; Håkon Dahle et al. (2021). Adaptive evolution of viruses infecting marine microalgae (haptophytes), from acute infections to stable coexistence. (external link)
• Steffen Leth Jørgensen; Bjarte Hannisdal; Anders Lanzén et al. (2012). Correlating microbial community profiles with geochemical data in highly stratified sediments from the Arctic Mid-Ocean Ridge. (external link)
• Ida Helene Steen; Hilde Hvoslef; Nils-Kåre Birkeland et al. (2001). Archaeoglobus fulgidus isocitrate dehydrogenase, malate dehydrogenase and glutamate dehydrogenase. (external link)
• Håkon Dahle; Irene Roalkvam; Rolf B. Pedersen et al. (2013). The versatile in situ gene expression of an Epsilonproteobacteria-dominated biofilm from a hydrothermal chimney. (external link)
• Ida Helene Steen; Håkon Dahle; Runar Stokke et al. (2016). Novel barite chimneys at the Loki´s Castle vent field shed light on key factors shaping microbial communities and functions in hydrothermal systems. (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)
• 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)
• Runar Stokke; Håkon Dahle; Irene Roalkvam et al. (2015). Functional interactions among filamentous Epsilonproteobacteria and Bacteroidetes in a deep-sea hydrothermal vent biofilm. (external link)
• Manuel Ferrer; Celia Méndez-García; Rafael Bargiela et al. (2018). Decoding the Ocean’s Microbiological Secrets for Marine Enzyme Biodiscovery. (external link)
• Jan Pieter Vander Roost; Frida Lise Daae; Ida Helene Steen et al. (2018). Distribution patterns of iron-oxidizing Zeta- and Beta-Proteobacteria from different environmental settings of the Jan Mayen vent fields. (external link)

Research report

• Ana Filipa Alfaia Marques; Rolf B. Pedersen; Ingunn Hindenes Thorseth et al. (2015). Arctic Mid-Ocean Ridge, NORMAR/CGB 2015 Test Cruise, R/V G.O.SARS, Senter for Geobiologi. (external link)
• Rolf B. Pedersen; Bernt Rydland Olsen; Thibaut Barreyre et al. (2021). FAGUTREDNING MINERALRESSURSER I NORSKEHAVET LANDSKAPSTREKK, NATURTYPER OG BENTISKE ØKOSYSTEMER. (external link)

Lecture

• Runar Stokke; Håkon Dahle; Irene Roalkvam et al. (2014). Metagenomic study of a filamentous microbial mat from the Loki´s Castle Vent Field. (external link)
• Ida Helene Steen (2018). Forskningsaktiviteter og infrastruktur ved KG Jebsen Senter for Dyphavsforskning og Havlaboratoriet. (external link)
• Ida Helene Steen (2022). Arctic Deep-Sea hydrothermal Vents: from basic knowledge to applications. (external link)
• Ida Helene Steen (2020). A perspective from Bergen: Deep Ocean bioprospecting, metagenomics and public databases. (external link)
• Gro Elin Kjæreng Bjerga; Øivind Larsen; Runar Stokke et al. (2015). An enzyme discovery and expression pipeline for the conversion of marine biomasses. (external link)
• Ida Helene Steen (2017). Marine bioprospecting activities at KG Jebsen Centre for Deep Sea Research. (external link)
• Ida Helene Steen (2017). Erfaring med InMare. (external link)
• Ida Helene Steen (2025). Bioprospektering - jakten på naturens egne løsninger | Fakultet for naturvitenskap og teknologi | UiB. (external link)
• Ida Helene Steen (2012). Microbial life in the Arctic Mid-Ocean Vent Fields. (external link)
• Ida Helene Steen (2014). Biotechnology at GeoBIO-SFF. (external link)
• Ida Helene Steen (2013). Diversitet, funksjon og bioteknologisk anvendelse av mikroorganimser i dyp-marine varme kilder. (external link)
• Ida Helene Steen (2017). Value chains and innovation of life in deep-sea hydrothermal vents - the InMare and Virus-X projects. (external link)
• Ida Helene Steen (2016). Marin Bioprospektering. (external link)
• Ida Helene Steen (2015). The value of biodiversity. (external link)
• Ida Helene Steen (2019). Microbial life in deep-sea hydrothermal vent systems. (external link)
• Ida Helene Steen (1997). Isocitrate dehydrogenase from the sulfate reducers Archaeoglobus fulgidus and Desulfobacter vibrioformis. (external link)
• Håkon Dahle; Ingeborg Elisabet Økland; Irene Roalkvam et al. (2014). Towards a framework for analyses of how energy landscapes shape microbial communities in deep-sea hydrothermal systems. (external link)
• Ida Helene Steen (2022). Diving deep for the discovery of new marine enzymes. (external link)
• Ida Helene Steen (2018). Biodiscovery and bioprospecting activities at KG Jebsen Centre for Deep-Sea Research. (external link)
• Ida Helene Steen (2014). Mikrobielt liv i ekstreme miljø. (external link)
• Ida Helene Steen (2019). Separasjon av enzymer for bruk i bioteknologi. (external link)
• Ida Helene Steen (2017). Et innovasjonsdykk i dyphavet. (external link)
• Ida Helene Steen (2015). Exploitation of genetic resources from the Arctic mid-ocean ridge vent fields in the norwegian industry. (external link)
• Ida Helene Steen (2025). Dyphavets hemmeligheter: Mikrobielt liv i varme kilder og bioteknologiske muligheter. (external link)
• Ida Helene Steen (2025). Microbiology of Arctic Vents. (external link)
• Eoghan Reeves; Ida Helene Steen; Mari Heggernes Eilertsen (2026). Hydrothermal systems in the deep Arctic Ocean from Fluids to Life. (external link)
• Ida Helene Steen (2025). Teaching about the remote: Deep-sea hydrothermal vents on the Arctic Mid-ocean Ridges. (external link)
• Ida Helene Steen (2019). Marine bioprospecting. (external link)
• Ida Helene Steen (2019). Summary of research activities WP1 - Environmental sampling. (external link)
• Ida Helene Steen (2024). Mikrobielt liv i aktive hydrotermiske varmekilder på havbunnen i nordlige farvann. (external link)
• Ida Helene Steen (2017). Black smokers-Extreme life conditions and applications. (external link)
• Ida Helene Steen (2017). The Virus-X project. (external link)

Conference lecture

• Steffen Leth Jørgensen; Bjarte Hannisdal; Ingunn Hindenes Thorseth et al. (2014). Correlating abundances of archaeal lineages and geochemical parameters in deep-sea marine sediments. (external link)
• Ida Helene Steen (2018). Biodiscovery and bioprospecting of Norwegian deep-sea hydrothermal vent systems. (external link)
• Juliane Wissuwa; Runar Stokke; Ida Helene Steen (2013). Assessment of the biotechnological potential of AMOR:(meta)genomics, protein expression and characterisation. (external link)
• Anita-Elin Fedøy; Nannan Yang; Aurora Martinez et al. (2008). A cold-active enzyme with an unusual high thermal stability: Isocitrate dehydrogenase from the psychrophilic bacterium Desulfotalea psychrophila. (external link)
• Hans Tore Rapp; Christoffer Schander; K M Halanych et al. (2010). Investigations of a novel fauna from hydrothermal vents along the Arctic Mid-Ocean Ridge (AMOR). (external link)
• Anders Schouw; Tove Leiknes Eide; Runar Stokke et al. (2015). Isolation and characterization of a novel syntrophic alkane degrading bacterium from the Loki's castle hydrothermal vent field.. (external link)
• Steffen Leth Jørgensen; Rolf B. Pedersen; Ingunn Hindenes Thorseth et al. (2012). Correlating geochemical data with microbial community structure in highly stratified sediments from the Arctic mid-ocean ridge. (external link)
• Runar Stokke; Ida Helene Steen (2015). Capturing of microbial dark matter in deep sea hydrothermal vents by using in situ colonizers. (external link)
• Ida Helene Steen (2023). From deep blue to green: how deep ocean microorganisms can mitigate greenhouse gas emissions and support a green bioeconomy. (external link)
• Håkon Dahle; Irene Roalkvam; Steffen Leth Jørgensen et al. (2010). A variety of microbial mats cover the chimney walls of the Loki's Castle hydrothermal field. (external link)
• Ida Helene Steen; Håkon Dahle; Irene Roalkvam et al. (2014). Microbial communities associated with low-temparture venting barite chimneys in the Loki´s Castle black smoker field. (external link)
• Håkon Dahle; Ingeborg Elisabet Økland; Ingunn Hindenes Thorseth et al. (2014). Use of metatranscriptomics, amplicon pyrosequencing and thermodynamics to assess how microbial communities are shaped by energy availability. (external link)
• Ida Helene Steen (2013). Hvordan oppdage nye enzymer?. (external link)
• Ida Helene Steen (2016). Biodiscovery and bioprospecting of molecules from deep-sea organisms. (external link)
• Ida Helene Steen (2010). Anaerobic methanotrophs - from cold seeps to hot vents. (external link)
• Runar Stokke; Håkon Dahle; Ida Helene Steen (2012). Metagenomics of arctic hydrothermal vent biofilms. (external link)
• Rolf-Birger Pedersen; Ingunn Hindenes Thorseth; Hans Tore Rapp et al. (2010). Geobiology of hydrothermal vent fields in the Norwegian-Greenland Sea. (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)
• Ida Helene Steen (2024). Arctic Deep-Sea Hydrothermal Vents: from basic knowledge to applications. (external link)
• Ida Helene Steen (2015). Exploitation of genetic resources from the Arctic mid-ocean ridge vent fields in the norwegian industry. (external link)
• Ingunn Hindenes Thorseth; Ida Helene Steen; Irene Roalkvam et al. (2011). Microbial processes and biomineralisation associated with low-temperature venting and formation of barite chimneys at Loki's Castle hydrothermal field. (external link)
• Runar Stokke; Irene Roalkvam; Ida Helene Steen (2012). Exploring Metagenomes. (external link)
• Ida Helene Steen (2025). Extremozymes from Arctic Vents. (external link)
• Irene Roalkvam; Karine Drønen; Runar Stokke et al. (2015). Isolation, characterization and genome analysis of a nitrate reducing Arcobacter sp. isolated from saline aquifer water. (external link)
• Katja Enberg; Ståle Ellingsen; Ida Helene Steen (2019). Use of active learning methods and technologies – obstacles, incentives, and bottlenecks.. (external link)
• Katharina Sass; Ida Helene Steen; Runar Stokke (2022). Insights into the chitinolytic potential of microbial communities in Arctic deep-sea hydrothermal sediments.. (external link)
• Ida Helene Steen (2013). Microbial life in the Arctic Mid-Ocean Vent Fields. (external link)
• Ruth-Anne Sandaa; Jessica Louise Ray; Francois Enoult et al. (2017). Light and depth - main drivers of marine virus diversity and dynamics in the Arctic - Metagenomic analysis of total viral assemblages from surface to the deep. (external link)
• Ida Helene Steen (2010). Microbial communities in cold seeps, Nyegga, Mid-Norwegian shelf. (external link)
• Haflidi Haflidason; Ida Helene Steen; Berit Oline Blihovde Hjelstuen et al. (2009). The extreme environment of active gas hydrate bearing pockmarks at Nyegga: a multidisciplinary geological, biological and geochemical study on the Mid-Norwegian margin. (external link)
• Ingunn Hindenes Thorseth; Ida Helene Steen; Irene Roalkvam et al. (2010). Microbial life associated with low-temperature hydrothermal venting and formation of barite chimneys at Loki’s Castle vent field. (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)
• Håkon Dahle; Ingeborg Elisabet Økland; Rolf B. Pedersen et al. (2013). Thermodynamic constraints on the microbial ecology and biogeochemical cycling in deep-sea hydrothermal systems. (external link)
• Håkon Dahle; Ingeborg Elisabet Økland; Ingunn Hindenes Thorseth et al. (2014). Energy landscapes shape microbial communities and the distribution of biosignatures in hydrothermal systems on the Arctic Mid-Ocean Ridge. (external link)
• Katharina Sass; Hasan Arsin; Anita-Elin Fedøy et al. (2023). Microbiome reconstruction of in situ incubations reveal key players in chitin degradation in Arctic hydrothermal deep-sea sediments. (external link)
• Steffen Leth Jørgensen; Anders Lanzén; Tamara Baumberger et al. (2013). Correlating microbial community structure with geochemical data in sediments from the Arctic Mid-Ocean Ridge. (external link)
• Ida Helene Steen; Mikael Karlstrøm; Runar Stokke et al. (2004). Molecular adaptation of isocitrate dehydrogenase to high temperature. (external link)
• Runar Stokke; Ida Helene Steen (2012). Metagenomics at arctic deep-sea hydrothermal vent systems. (external link)
• Marianne Slang Jensen; Lasse Fredriksen; Bjørn Altermark et al. (2017). Bioprospecting of enzymes for processing lignocellulosic biomass. (external link)
• Ida Helene Steen (2023). Biodiscovery in Arctic deep-sea hydrothermal vent systems. (external link)
• Nina Aalen; Anne Siri Langelandsvik; Torleiv Lien et al. (1996). Purification and characterization of glutamate dehydrogenase from the thermophilic archaea Archaeoglobus fulgidus strain 7324. (external link)
• Anne Siri Langelandsvik; Nina Aalen; Nils-Kåre Birkeland et al. (1996). L-Malate dehydrogenase from the hyperthermophilic archaeon Archaeoglobus fulgidus. (external link)
• Haflidi Haflidason; Ida Helene Steen; Berit Oline Blihovde Hjelstuen et al. (2009). The extreme environments of the active seafloor seep pockmarks at Nyegga, the upper Mid-Norwegian margin: a multidisciplinary geological, biological and geochemical study. (external link)
• Thomas Øfstegaard Viflot; Eoghan Reeves; Francesca Vulcano et al. (2019). Conductive Cooling and Microbial Carbon Transformations in Diffuse Hydrothermal Fluids at Loki’s Castle. (external link)
• Ida Helene Steen; Runar Stokke; Anders Lanzén et al. (2010). Metaproteomic Analysis of a Chemosynthetic Hydrothermal Vent Community Reveals Insights into Key-Metabolic Processes. (external link)
• Ida Helene Steen; Håkon Dahle; Irene Roalkvam et al. (2014). Microbial communities associated with low-temperature venting barite chimneys in the Loki´s Castle black smoker field. (external link)
• Juliane Wissuwa; Runar Stokke; Ida Helene Steen (2013). Exposure the biotechnological potential in microbial communities at the Arctic Mid-Ocean Ridge Vent Fields. (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)
• Ida Helene Steen; Hilde Hvoslef; Torleiv Lien et al. (1996). Archaeoglobus fulgidus isocitrate dehydrogenase: Purification, characterization, thermostability genetic analysis and phylogeny. (external link)
• Ingunn Hindenes Thorseth; Benjamin Eickmann; Ida Helene Steen et al. (2013). Formation of barite chimneys at low-temperature hydrothermal venting: evidence for complex geobio-interactions. (external link)
• Petra Hribovšek; Emily Maria Denny; Håkon Dahle et al. (2022). Iron oxidizing bacteria producing sheath structures in mats on high temperature chimneys at Fåvne hydrothermal vent field. (external link)

Media interview

• Ida Helene Steen (2013). Jakter superenzymer på havbunnen. (external link)
• Ida Helene Steen; Kjartan Sandnes (2013). Fiskeslo kan bli medisin. (external link)
• Ida Helene Steen; Rolf B. Pedersen (2015). Organismer i havet kan være en gullgruve.. (external link)
• Ida Helene Steen (2013). Fiskeslo mot halsvondt i framtida. (external link)
• Ida Helene Steen; Runar Stokke (2015). Bakteriar frå Norskehavet kan gjere fiskeslo om til mat.. (external link)
• Ida Helene Steen (2015). Innslag på "NRK alltid nyheter" om hvordan termostabile enzymer kan brukes i industrien. (external link)
• Ida Helene Steen (2013). Fiskeslo fikser gørr i halsen. (external link)
• Vincent Eijsink; Hans Torstein Kleivdal; Ida Helene Steen et al. (2013). ENZYMER I INDUSTRIEN: Jakter superenzymer på havbunnen. (external link)
• Ida Helene Steen; Kjartan Sandnes (2013). Fiskeslo kan bli medisin. (external link)
• Ida Helene Steen (2015). Researchers to trawl ocean for new biotechnology Resources.. (external link)
• Ida Helene Steen; Rolf B. Pedersen (2015). Kan tjene stort på dypvannsorganismer.. (external link)

Popular science book chapter

• Ida Helene Steen (2015). Norske varmekilder i dyphavet. (external link)

Master’s thesis

• Siri Charlotte Haugerud Rognan; Runar Stokke; Katharina Sass et al. (2023). Plastic Degrading Potential of Arctic Deep-Sea Hydrothermal Microbiomes. (external link)
• Ivan Patrick Tualla; Runar Stokke; Ida Helene Steen et al. (2024). From deep-sea to humans: Discovery of novel promiscuous enzymes from an Arctic deepsea hydrothermal vent and novel function of human butyrylcholinesterase in depolymerization of plastic substrates. (external link)
• Sondre Olai Spjeld; Runar Stokke; Ida Helene Steen (2021). Metagenomics-based discovery of novel carbohydrate degrading enzymes from deep-sea hydrothermal in situ enrichments; expression, purification and characterization. (external link)

Doctoral thesis (PhD)

• Runar Stokke; Nils-Kåre Birkeland; Ida Helene Steen (2006). Isocitrate dehydrogenase from extremophiles; Molecular adaptations to high temperatures. (external link)
• Ida Helene Steen (1998). Isocitrate dehydrogenase from the sulfate reducers Archaeoglobus fulgidus and Desulfobacter vibrioformis:Properties, Primary structure, and Phylogeny. (external link)
• Irene Roalkvam; Ida Helene Steen; Tim Urich (2012). Diversity, stratification and in situ metabolism of anaerobic methanotrophic archaea in Nyegga cold seeps. (external link)
• Juliane Wissuwa; Ida Helene Steen (2016). The Arctic Mid-Ocean Ridge Vent Fields - A valuable Resource for Marine Bioprospecting?. (external link)
• William Peter Hocking; Ida Helene Steen (2015). Energy conservation mechanisms in the sulfate respiring archaeon Archaeoglobus fulgidus VC16 - assessed by transcriptome profiling and comparative genomics. (external link)
• Steffen Leth Jørgensen; Rolf B. Pedersen; Ingunn Hindenes Thorseth et al. (2013). Linking microbial community structures and geochemistry in deep-sea sediments & pursuing the link between identity and function. (external link)
• Anders Schouw; Ida Helene Steen (2018). Isolation and genome analysis of Vallitalea guaymasensis L81; energy metabolism, syntrophy and applications. (external link)

Academic literature review

• Arnthór Aevarsson; Anna-Karina Kaczorowska; Björn Thor Adalsteinsson et al. (2021). Going to extremes - A metagenomic journey into the dark matter of life. (external link)

Radio or TV participation

• Runar Stokke; Petra Hribovšek; Mari Heggernes Eilertsen et al. (2024). The Deep Arctic Ocean - webinar. (external link)
• Ida Helene Steen (2015). Schrødingers katt. (external link)

Popular science article

• Ida Helene Steen (2016). Norske varmekilder i dyphavet - en underfundig verden full av spennende livsformer. (external link)

Media feature article

• Ida Helene Steen (2016). Et hav av bakterier er et hav av muligheter. (external link)

Exhibition production

• Ida Helene Steen (2019). Kan mikroorganismer i dyphavet gjøre avfall om til mat?. (external link)

See a complete overview of publications in Cristin.

Current and previous projects:

2021-2024 Life at the limits: diversity, adaptation strategies and bioprospecting of microbes living in Arctic deep sea habitats (IN-DEPTH), EEA-Norway grant (P.I. Tadeusz Kaczorowski University of Gdansk). P.I. UiB.

2021-2024 DeepSeaQuence:Uncovering the metabolic secrets and capacity of Arctic deep-sea hydrothermal vent microbiomes. NFR. Co-investigator. 

2021-2024 EcoSafe: Environmental risk studies towards sustainable seabed mineral mining on the Mid-Ocean Ridge in Norway. Co-investigator. 

2021-2026 Centre for Deep-Sea Research (Trond Mohn foundation). Theme leader "Bioresources" and member of leader group.

2019-2023 HyPOD: Hydrothermal Production of Organic molecules: carbon transformation and Decomposition in ocean crust fluids. Frinatek. P.I. Ass. prof E. Reeves, UiB. Role in project - partner. 

2018-2021 HACON: Hot vents in an ice-covered ocean: the role of the Arctic as a connectivity pathway betweeen ocean basins. Frinatek. P.I. Dr. Eva Ramirez-Llodra, NIVA. Role in project, partner - microbiology. 

2017-2021 KG Jebsen centre for Deep-Sea Research. (leader group)

2016-2021 VIROVAC: Impact of appendicularia on the ecology of marine viruses. Frimedbio. P. I. Jessica L Ray, Norce. Partner.

2016-2019 Virus-X: Viral Metagenomics for innovation Value. H2020. Partner/WP-leader

2015-2018 INMARE: Industrial Applications of Marine Enzymes: Innovative screening and expression platforms to discover and use the functional protein diversity from the sea.  H2020. Partner: More info.

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2012-2017 NorZymeD: Enzyme development for Norwegian biomass - mining Norwegian biodiversity for seizing Norwegian oppotunities in the bio-based economy. NFR

2012-2015 Better handling of microbial induced corrosion during operation. VISTA 

2011-2016 Mining of a Norwegian biogoldmine through metagenomics. 

2009-2012 Metagenomics and metaproteomics of deep arctic hydrothermal systems. VISTA. 

2006-2007 Optimalisering av proteomikkverktøy for stuider av fysiologiske prosesser hos mikoorganismer i biogeokjemiske sykluser i ekstreme miljl. Meltzer 

2001-2002 Thermodynamics and structure of thermostable isocitrate dehydrogenase. Postdoc, Karolinska Institute. NorFa. 

1998-2001 Structural and phylogenetic aspects of isocitrate dehydrogenase. NFR.