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

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

MSc student Noemi Segura. Ecology and physiology of sulfate-reducing partner bacteria involved in anaerobic oxidation of methane in Arctic vents

MSc student Hallvard Johan Jacobsen. Phenotypic characterization of a new Pseudodesulfovibrio strain isolated from the Ægir vent field

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

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

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 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

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

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

Graduated

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

Academic lecture

• Steen, Ida Helene (2024). Arctic Deep-Sea Hydrothermal Vents: from basic knowledge to applications. (external link)
• Sass, Katharina; Arsin, Hasan; Fedøy, Anita-Elin et al. (2023). Microbiome reconstruction of in situ incubations reveal key players in chitin degradation in Arctic hydrothermal deep-sea sediments. (external link)
• Steen, Ida Helene (2023). Biodiscovery in Arctic deep-sea hydrothermal vent systems. (external link)
• Steen, Ida Helene (2023). From deep blue to green: how deep ocean microorganisms can mitigate greenhouse gas emissions and support a green bioeconomy. (external link)
• Hribovšek, Petra; Denny, Emily Maria; Dahle, Håkon et al. (2022). Iron oxidizing bacteria producing sheath structures in mats on high temperature chimneys at Fåvne hydrothermal vent field. (external link)
• Sass, Katharina; Steen, Ida Helene; Stokke, Runar (2022). Insights into the chitinolytic potential of microbial communities in Arctic deep-sea hydrothermal sediments. . (external link)
• Enberg, Katja; Ellingsen, Ståle; Steen, Ida Helene (2019). Use of active learning methods and technologies – obstacles, incentives, and bottlenecks.. (external link)
• Viflot, Thomas Øfstegaard; Reeves, Eoghan; Vulcano, Francesca et al. (2019). Conductive Cooling and Microbial Carbon Transformations in Diffuse Hydrothermal Fluids at Loki’s Castle. (external link)
• Steen, Ida Helene (2018). Biodiscovery and bioprospecting of Norwegian deep-sea hydrothermal vent systems. (external link)
• Sandaa, Ruth-Anne; Ray, Jessica Louise; Enoult, Francois 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)
• Jensen, Marianne Slang; Fredriksen, Lasse; Altermark, Bjørn et al. (2017). Bioprospecting of enzymes for processing lignocellulosic biomass. (external link)
• Steen, Ida Helene (2016). Biodiscovery and bioprospecting of molecules from deep-sea organisms. (external link)
• Schouw, Anders; Eide, Tove Leiknes; Stokke, Runar et al. (2015). Isolation and characterization of a novel syntrophic alkane degrading bacterium from the Loki's castle hydrothermal vent field.. (external link)
• Steen, Ida Helene (2015). Exploitation of genetic resources from the Arctic mid-ocean ridge vent fields in the norwegian industry. (external link)
• Roalkvam, Irene; Drønen, Karine; Stokke, Runar et al. (2015). Isolation, characterization and genome analysis of a nitrate reducing Arcobacter sp. isolated from saline aquifer water. (external link)
• Stokke, Runar; Steen, Ida Helene (2015). Capturing of microbial dark matter in deep sea hydrothermal vents by using in situ colonizers. (external link)
• Steen, Ida Helene; Dahle, Håkon; Roalkvam, Irene et al. (2014). Microbial communities associated with low-temperature venting barite chimneys in the Loki´s Castle black smoker field. (external link)
• Dahle, Håkon; Økland, Ingeborg Elisabet; Thorseth, Ingunn Hindenes et al. (2014). Use of metatranscriptomics, amplicon pyrosequencing and thermodynamics to assess how microbial communities are shaped by energy availability. (external link)
• Jørgensen, Steffen Leth; Hannisdal, Bjarte; Thorseth, Ingunn Hindenes et al. (2014). Correlating abundances of archaeal lineages and geochemical parameters in deep-sea marine sediments. (external link)
• Dahle, Håkon; Økland, Ingeborg Elisabet; Thorseth, Ingunn Hindenes et al. (2014). Energy landscapes shape microbial communities and the distribution of biosignatures in hydrothermal systems on the Arctic Mid-Ocean Ridge. (external link)
• Steen, Ida Helene; Dahle, Håkon; Roalkvam, Irene et al. (2014). Microbial communities associated with low-temparture venting barite chimneys in the Loki´s Castle black smoker field. (external link)
• Jørgensen, Steffen Leth; Lanzén, Anders; Baumberger, Tamara et al. (2013). Correlating microbial community structure with geochemical data in sediments from the Arctic Mid-Ocean Ridge. (external link)
• Steen, Ida Helene (2013). Microbial life in the Arctic Mid-Ocean Vent Fields. (external link)
• Wissuwa, Juliane; Stokke, Runar; Steen, Ida Helene (2013). Assessment of the biotechnological potential of AMOR:(meta)genomics, protein expression and characterisation. (external link)
• Wissuwa, Juliane; Stokke, Runar; Steen, Ida Helene (2013). Exposure the biotechnological potential in microbial communities at the Arctic Mid-Ocean Ridge Vent Fields. (external link)
• Thorseth, Ingunn Hindenes; Eickmann, Benjamin; Steen, Ida Helene et al. (2013). Formation of barite chimneys at low-temperature hydrothermal venting: evidence for complex geobio-interactions. (external link)
• Dahle, Håkon; Økland, Ingeborg Elisabet; Pedersen, Rolf B. et al. (2013). Thermodynamic constraints on the microbial ecology and biogeochemical cycling in deep-sea hydrothermal systems. (external link)
• Steen, Ida Helene (2013). Hvordan oppdage nye enzymer?. (external link)
• Jørgensen, Steffen Leth; Pedersen, Rolf B.; Thorseth, Ingunn Hindenes et al. (2012). Correlating geochemical data with microbial community structure in highly stratified sediments from the Arctic mid-ocean ridge. (external link)
• Stokke, Runar; Dahle, Håkon; Steen, Ida Helene (2012). Metagenomics of arctic hydrothermal vent biofilms. (external link)
• Stokke, Runar; Roalkvam, Irene; Steen, Ida Helene (2012). Exploring Metagenomes. (external link)
• Stokke, Runar; Steen, Ida Helene (2012). Metagenomics at arctic deep-sea hydrothermal vent systems. (external link)
• Thorseth, Ingunn Hindenes; Steen, Ida Helene; Roalkvam, Irene 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)
• Pedersen, Rolf-Birger; Thorseth, Ingunn Hindenes; Rapp, Hans Tore et al. (2010). Geobiology of hydrothermal vent fields in the Norwegian-Greenland Sea. (external link)
• Dahle, Håkon; Roalkvam, Irene; Jørgensen, Steffen Leth et al. (2010). A variety of microbial mats cover the chimney walls of the Loki's Castle hydrothermal field. (external link)
• Rapp, Hans Tore; Schander, Christoffer; Halanych, K M et al. (2010). Investigations of a novel fauna from hydrothermal vents along the Arctic Mid-Ocean Ridge (AMOR). (external link)
• Steen, Ida Helene (2010). Microbial communities in cold seeps, Nyegga, Mid-Norwegian shelf. (external link)
• Thorseth, Ingunn Hindenes; Steen, Ida Helene; Roalkvam, Irene et al. (2010). Microbial life associated with low-temperature hydrothermal venting and formation of barite chimneys at Loki’s Castle vent field. (external link)
• Steen, Ida Helene (2010). Anaerobic methanotrophs - from cold seeps to hot vents. (external link)
• Steen, Ida Helene; Stokke, Runar; Lanzén, Anders et al. (2010). Metaproteomic Analysis of a Chemosynthetic Hydrothermal Vent Community Reveals Insights into Key-Metabolic Processes. (external link)
• Haflidason, Haflidi; Steen, Ida Helene; Hjelstuen, Berit Oline Blihovde 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)
• Haflidason, Haflidi; Steen, Ida Helene; Hjelstuen, Berit Oline Blihovde 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)
• Fedøy, Anita-Elin; Yang, Nannan; Martinez, Aurora et al. (2008). A cold-active enzyme with an unusual high thermal stability: Isocitrate dehydrogenase from the psychrophilic bacterium Desulfotalea psychrophila. (external link)
• Steen, Ida Helene; Karlstrøm, Mikael; Stokke, Runar et al. (2004). Molecular adaptation of isocitrate dehydrogenase to high temperature. (external link)
• Steen, Ida Helene; Madsen, Marit Steine; Lien, Torleiv et al. (2000). Isocitrate dehydrogenase from Aeropyrum pernix. (external link)
• Hvoslef, Hilde; Steen, Ida Helene; Lien, Torleiv et al. (1996). Expression of a thermostable isocitrate dehydrogenase from the hyperthermophilic Archaeoglobus fulgidus in Escherichia coli. (external link)
• Steen, Ida Helene; Hvoslef, Hilde; Lien, Torleiv et al. (1996). Archaeoglobus fulgidus isocitrate dehydrogenase: Purification, characterization, thermostability genetic analysis and phylogeny. (external link)
• Hvoslef, Hilde; Steen, Ida Helene; Lien, Torleiv et al. (1996). Expression of a thermostable isocitrate dehydrogenase from the hyperthermophilic Archaeoglobus fulgidus in Escherichia coli. (external link)
• Aalen, Nina; Langelandsvik, Anne Siri; Lien, Torleiv et al. (1996). Purification and characterization of glutamate dehydrogenase from the thermophilic archaea Archaeoglobus fulgidus strain 7324. (external link)
• Langelandsvik, Anne Siri; Aalen, Nina; Birkeland, Nils-Kåre et al. (1996). L-Malate dehydrogenase from the hyperthermophilic archaeon Archaeoglobus fulgidus. (external link)
• Steen, Ida Helene; Hvoslef. Hilde, [Mangler fornavn]; Lien, Torleiv et al. (1996). Archaeoglobus fulgidus isocitrate dehydrogenase: Purification, characterization, thermostability, genetic analysis and phylogeny. (external link)

Academic article

• Hribovšek, Petra; Denny, Emily Maria; Dahle, Håkon et al. (2023). Putative novel hydrogen- and iron-oxidizing sheath-producing Zetaproteobacteria thrive at the Fåvne deep-sea hydrothermal vent field. (external link)
• Vulcano, Francesca; Hribovšek, Petra; Denny, Emily Maria et al. (2023). Potential for homoacetogenesis via the Wood–Ljungdahl pathway in Korarchaeia lineages from marine hydrothermal vents. (external link)
• Panieri, Giuliana; Argentino, Claudio; Ramalho, Sofia P. et al. (2023). An Arctic natural oil seep investigated from space to the seafloor. (external link)
• Røyseth, Victoria; M. Hurysz, Brianna; Kaczorowska, Anna-Karina et al. (2023). Activation mechanism and activity of globupain, a thermostable C11 protease from the Arctic Mid-Ocean Ridge hydrothermal system. (external link)
• Roerdink, Desiree Lisette; Vulcano, Francesca; Landro, Jan-Kristoffer et al. (2023). Hydrothermal activity fuels microbial sulfate reduction in deep and distal marine settings along the Arctic Mid Ocean Ridges. (external link)
• Vulcano, Francesca; Hahn, Cedric Jasper; Roerdink, Desiree Lisette et al. (2022). Phylogenetic and functional diverse ANME-1 thrive in Arctic hydrothermal vents. (external link)
• Ramirez-Llodra, Eva; Argentino, Claudio; Baker, Maria et al. (2022). Hot Vents Beneath an Icy Ocean: The Aurora Vent Field, Gakkel Ridge, Revealed. (external link)
• Sandaa, Ruth-Anne; Saltvedt, Marius Rydningen; Dahle, Håkon et al. (2021). Adaptive evolution of viruses infecting marine microalgae (haptophytes), from acute infections to stable coexistence. (external link)
• ARSIN, Hasan; Jasilionis, Andrius; Dahle, Håkon 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)
• Hahn, Cedric Jasper; Laso-Pérez, Rafael; Vulcano, Francesca et al. (2020). “Candidatus Ethanoperedens,” a thermophilic genus of archaea mediating the anaerobic oxidation of ethane. (external link)
• Stokke, Runar; Reeves, Eoghan; Dahle, Håkon et al. (2020). Tailoring hydrothermal vent biodiversity towards improved biodiscovery using a novel in-situ enrichment strategy. (external link)
• Le Moine Bauer, Sven; Sjøberg, Andreas Gilje; L´Haridon, Stephane 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)
• Fredriksen, Lasse; Stokke, Runar; Jensen, Marianne Slang et al. (2019). Discovery of a Thermostable GH10 Xylanase with Broad Substrate Specificity from the Arctic Mid-Ocean Ridge Vent System. (external link)
• Vuoristo, Kiira; Fredriksen, Lasse; Oftebro, Maren et al. (2019). Production, characterization, and application of an alginate lyase, AMOR_PL7A, from hot vents in the Arctic mid-ocean ridge. (external link)
• Enberg, Katja; Steen, Ida Helene; Ellingsen, Ståle (2019). Me, myself and I -Teachers’ self-motivation and sense of responsibility determine the use of active learning methods. (external link)
• Stepnov, Anton; Fredriksen, Lasse; Steen, Ida Helene et al. (2019). Identification and characterization of a hyperthermophilic GH9 cellulase from the Arctic Mid-Ocean Ridge vent field. (external link)
• Schouw, Anders; Vulcano, Francesca; Roalkvam, Irene et al. (2018). Genome analysis of Vallitalea guaymasensis strain L81 isolated from a deep-sea hydrothermal vent system. (external link)
• Le Moine Bauer, Sven; Stensland, Anne; Daae, Frida Lise et al. (2018). Water masses and depth structure prokaryotic and T4-like viral communities around hydrothermal systems of the Nordic Seas. (external link)
• Vander Roost, Jan Pieter; Daae, Frida Lise; Steen, Ida Helene et al. (2018). Distribution patterns of iron-oxidizing Zeta- and Beta-Proteobacteria from different environmental settings of the Jan Mayen vent fields. (external link)
• Ferrer, Manuel; Méndez-García, Celia; Bargiela, Rafael et al. (2018). Decoding the Ocean’s Microbiological Secrets for Marine Enzyme Biodiscovery. (external link)
• Dahle, Håkon; Le Moine Bauer, Sven; Baumberger, Tamara et al. (2018). Energy landscapes in hydrothermal chimneys shape distribution of primary producers. (external link)
• Martínez-Martínez, Monica; Cascolín, Cristina; Santiago, Gerard et al. (2017). Determinants and Prediction of Esterase Substrate Promiscuity Patterns. (external link)
• Wissuwa, Juliane; Le Moine Bauer, Sven; Steen, Ida Helene et al. (2017). Complete genome sequence of Lutibacter profoundi LP1T isolatet from an Arctic deep-sea hydrothermal vent system. (external link)
• Steen, Ida Helene; Dahle, Håkon; Stokke, Runar 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)
• Tvedt, Morten Walløe; Eijsink, Vincentius Gerardus Henricus; Steen, Ida Helene et al. (2016). The missing link in ABS: The relationship between resource and product. (external link)
• Le Moine Bauer, Sven; Roalkvam, Irene; Steen, Ida Helene 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)
• Steinsbu, Bjørn Olav; Røyseth, Victoria; Thorseth, Ingunn Hindenes et al. (2016). Marinitoga arctica sp. Nov., a thermophilic, anaerobic heterotroph isolated from a Mid-Ocean Ridge vent field. (external link)
• Wissuwa, Juliane; Stokke, Runar; Fedøy, Anita-Elin et al. (2016). Isolation and complete genome sequence of the thermophilic Geobacillus sp. 12AMOR1 from an Arctic deep-sea hydrothermal vent site. (external link)
• Schouw, Anders; Eide, Tove Leiknes; Stokke, Runar 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)
• Dahle, Håkon; Økland, Ingeborg Elisabet; Thorseth, Ingunn Hindenes et al. (2015). Energy landscapes shape microbial communities in hydrothermal systems on the Arctic Mid-Ocean Ridge. (external link)
• Roalkvam, Irene; Bredy, Florian; Baumberger, Tamara et al. (2015). Hypnocyclicus thermotrophus gen. Nov., sp. nov. isolated from a microbial mat in a hydrothermal vent field. (external link)
• Roalkvam, Irene; Drønen, Karine; Stokke, Runar et al. (2015). Physiological and genomic characterization of Arcobacter anaerophilus IR-1 reveals new metabolic features in Epsilonproteobacteria. (external link)
• Stokke, Runar; Dahle, Håkon; Roalkvam, Irene et al. (2015). Functional interactions among filamentous Epsilonproteobacteria and Bacteroidetes in a deep-sea hydrothermal vent biofilm. (external link)
• Hocking, William Peter; Roalkvam, Irene; Magnussen, Carina 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)
• Urich, Tim; Lanzén, Anders; Stokke, Runar et al. (2014). Microbial community structure and functioning in marine sediments associated with diffuse hydrothermal venting assessed by integrated meta-omics. (external link)
• Hocking, William Peter; Stokke, Runar; Roalkvam, Irene et al. (2014). Identification of key components in the energy metabolism of Archaeoglobus fulgidus by transcriptome analyses. (external link)
• Drønen, Karine; Roalkvam, Irene; Beeder, Janiche et al. (2014). Modeling of heavy nitrate corrosion in anaerobe aquifer injection water biofilm: A case study in a flow rig. (external link)
• Stokke, Runar; Hocking, William Peter; Steinsbu, Bjørn Olav et al. (2013). Complete genome sequence of the thermophilic and facultatively chemolithoautotrophic sulfate reducer Archaeoglobus sulfaticallidus PM70-1T. (external link)
• Dahle, Håkon; Roalkvam, Irene; Pedersen, Rolf B. et al. (2013). The versatile in situ gene expression of an Epsilonproteobacteria-dominated biofilm from a hydrothermal chimney. (external link)
• Stokke, Runar; Hocking, William Peter; Steinsbu, Bjørn Olav et al. (2013). Complete genome sequence of the thermophilic and facultatively chemolithoautotrophic sulfate reducer Archaeoglobus sulfaticallidus strain PM70-1^T. (external link)
• Ray, Jessica Louise; Dondrup, Michael; Modha, Sejal 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)
• Stokke, Runar; Roalkvam, Irene; Lanzén, Anders et al. (2012). Integrated metagenomic and metaproteomic analyses of an ANME-1-dominated community in marine cold seep sediments. (external link)
• Jørgensen, Steffen Leth; Hannisdal, Bjarte; Lanzén, Anders et al. (2012). Correlating microbial community profiles with geochemical data in highly stratified sediments from the Arctic Mid-Ocean Ridge. (external link)
• Roalkvam, Irene; Dahle, Håkon; Chen, Yifeng et al. (2012). Fine-scale community structure analysis of ANME in Nyegga sediments with high and low methane flux. (external link)
• Leiros, Hanna-Kirsti S.; Fedøy, Anita-Elin; Leiros, Ingar et al. (2012). The complex structures of isocitrate dehydrogenase from Clostridium thermocellum and Desulfotalea psychrophila support a new active site locking mechanism. (external link)
• Roalkvam, Irene; Jørgensen, Steffen Leth; Chen, Yifeng et al. (2011). New insight into stratification of anaerobic methanotrophs in cold seep sediments. (external link)
• Karlström, Mikael; Chiaraluce, Roberta; Giangiacomo, Laura et al. (2010). Thermodynamic and kinetic stability of a large multi-domain enzyme from the hyperthermophile Aeropyrum pernix. (external link)
• Siltberg-Liberles, Jessica; Steen, Ida Helene; Svebak, Randi Myrseth et al. (2008). The phylogeny of the aromatic amino acid hydroxylases revisited by characterizing phenylalanine hydroxylase from Dictyostelium discoideum. (external link)
• Fedøy, Anita-Elin; Fedoy, AE; Yang, Nannan 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)
• Stokke, Runar; Madern, Dominique; Fedøy, Anita-Elin et al. (2007). Biochemical characterization of isocitrate dehydrogenase from Methylococcus capsulatus reveals a unique NAD(+)-dependent homotetrameric enzyme. (external link)
• Stokke, R; Leiros, Ingar; Karlström, Mikael et al. (2007). Thermal stability of isocitrate dehydrogenase from Archaeoglobus fulgidus studied by crystal structure analysis and engineering of chimers. (external link)
• Leiros, Hanna-Kirsti S.; Pey, AL; Innselset, M 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)
• Stokke, Runar; Birkeland, Nils-Kåre; Steen, Ida Helene (2007). Thermal stability and biochemical properties of isocitrate dehydrogenase from the thermoacidophilic archaeon Thermoplasma acidophilum. (external link)
• Karlström, Mikael; Steen, Ida Helene; Madern, Dominique et al. (2006). The crystal structure of a hyperthermostable subfamily II isocitrate dehydrogenase from Thermotoga maritima. (external link)
• Karlström, Mikael; Stokke, Runar; Steen, Ida Helene 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)
• Steen, Ida Helene; Madsen, Marit Steine; Birkeland, Nils-Kåre et al. (2002). Identification of cofactor discrimination siten in NAD-isocitrate dehydrogenase from Pyrococcus furious. (external link)
• Steen, Ida Helene; Madern, Dominique; Karlstrøm, Mikael et al. (2001). Comparison of isocitrate dehydrogenase from three different hyperthermophiles reveals differences in thermostability, cofactor specificity, oligomeric state and phylogenetic affiliation. (external link)
• Steen, Ida Helene; Hvoslef, Hilde; Birkeland, Nils-Kåre et al. (2001). Archaeoglobus fulgidus isocitrate dehydrogenase, malate dehydrogenase and glutamate dehydrogenase. (external link)
• Madern, Dominique; Ebel, C.; Dale, Hege Avsnes 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)
• Lien, Torleiv; Madsen, Marit Steine; Steen, Ida Helene et al. (1998). Desulfobulbus rhabdoformis sp. nov., a sulfate reducer from a water-oil separation system. (external link)
• Steen, Ida Helene; Madsen, Marit Steine; Birkeland, Nils-Kåre 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)
• Steen, Ida Helene; Madsen, Marit Steine; Birkeland, Nils Kåre 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)
• Aalen, Nina; Steen, Ida Helene; Birkeland, Nils-Kåre et al. (1997). Purification and properties of an extremely thermostable NADP-specific glutamate dehydrogenase from Archaeoglobus fulgidus. (external link)
• Steen, Ida Helene; Lien, Torleiv; Birkeland, Nils-Kåre (1997). Biochemical and phylogenetic characterization of isocitrate dehydrogenase from a hyperthermophilic archaeon, Archaeoglobus fulgidus. (external link)
• Langelandsvik, Anne Siri; Steen, Ida Helene; Birkeland, Nils-Kåre et al. (1997). Properties and primary structure of a thermostable L-malate dehydrogenase from Archaeoglobus fulgidus. (external link)

Masters thesis

• Haugerud Rognan, Siri Charlotte; Stokke, Runar; Sass, Katharina et al. (2023). Plastic Degrading Potential of Arctic Deep-Sea Hydrothermal Microbiomes. (external link)
• Spjeld, Sondre Olai; Stokke, Runar; Steen, Ida Helene (2021). Metagenomics-based discovery of novel carbohydrate degrading enzymes from deep-sea hydrothermal in situ enrichments; expression, purification and characterization. (external link)

Poster

• Røyseth, Victoria; M. Hurysz, Brianna; Kaczorowska, Anna-Karina et al. (2023). Activation mechanism and activity of globupain, a thermostable C11 protease from the Arctic Mid-Ocean Ridge hydrothermal system. (external link)
• Nguyen, Trong Thuc; Steen, Ida Helene; Stokke, Runar (2023). More than a drop in the ocean: biosynthetic potential and antimicrobial products from the deep-sea microbes. (external link)
• Esteban Vazquez, Brenda Lizbeth; Eilertsen, Mari Heggernes; Kongsrud, Jon Anders et al. (2023). Rissoid gastropods in Arctic CBEs. (external link)
• Sass, Katharina; Steen, Ida Helene; Stokke, Runar (2022). Revealing the chitinolytic potential of microbial communities in Arctic deep-sea hydrothermal sediments. . (external link)
• Denny, Emily Maria; Mall, Achim; Hribovšek, Petra et al. (2022). Interpretation of microbial food webs from metagenomic data in deep-sea hydrothermal vents across the Arctic Mid-Ocean Ridge. (external link)
• Hribovšek, Petra; Denny, Emily Maria; Dahle, Håkon et al. (2022). Sheath-forming Zetaproteobacteria abundant in black smoker chimney mats at the newly discovered Fåvne hydrothermal vent field. (external link)
• Hribovšek, Petra; Denny, Emily Maria; Dahle, Håkon et al. (2022). Sheath-forming Zetaproteobacteria abundant in black smoker chimney mats at the newly discovered Fåvne hydrothermal vent field. (external link)
• Hribovšek, Petra; Denny, Emily Maria; Viflot, Thomas Øfstegaard et al. (2021). Iron Oxidizers and Sheath-forming Zetaproteobacteria in Biofilms of the Newly Discovered Fåvne Hydrothermal Vent Field. (external link)
• Arsin, Hasan; Fedøy, Anita-Elin; Røyseth, Victoria et al. (2020). Bringing deep-sea enzymes to light. (external link)
• Arsin, Hasan; Fedøy, Anita-Elin; Røyseth, Victoria et al. (2020). Enzyme discovery from the edge of (sequence) space. (external link)
• Vester, Jan Kjølhede; Stokke, Runar; Steen, Ida Helene et al. (2018). High novelty in secreted amylases from hydrothermal vent field. (external link)
• Larsen, Øivind; Arsin, Hasan; Stokke, Runar et al. (2017). Discovery of proteases for bioconversion of marine biomass. (external link)
• Jensen, Marianne S; Fredriksen, Lasse; Altermark, Bjørn et al. (2017). Discovery, characterization and engineering of bacterial thermostable cellulose-degrading enzymes. (external link)
• Jensen, Marianne Slang; Fredriksen, Lasse; Altermark, Bjørn et al. (2017). Bioprospecting of enzymes for processing lignocellulosic biomass. (external link)
• Arsin, Hasan; Bjerga, Gro Elin Kjæreng; Stokke, Runar et al. (2015). Screening proteases for applications on fish industry by-products. (external link)
• Stokke, Runar; Steinsbu, Bjørn Olav; Wissuwa, Juliane et al. (2015). Isolation, characterization and genome sequencing of (hyper)thermophiles from the Arctic Mid-Ocean Ridge. (external link)
• Stokke, Runar; Roalkvam, Irene; Steen, Ida Helene (2015). Metagenomics-based enzyme discovery. (external link)
• Hocking, William Peter; Roalkvam, Irene; Stokke, Runar et al. (2015). New insights into energy conservation mechanisms in the sulfate respiring archaeon Archaeoglobus fulgidus VC16. (external link)
• Roalkvam, Irene; Stokke, Runar; Drønen, Karine et al. (2015). Isolation, characterization and genome analysis of a nitrate reducing Arcobacter sp. isolated from injection water. (external link)
• Wissuwa, Juliane; Stokke, Runar; Fedøy, Anita-Elin et al. (2015). Screening of new α-amylases from deep-sea hydrothermal vents by multiple (meta)-genomic tools. (external link)
• Drønen, Karine; Roalkvam, Irene; Beeder, Janiche et al. (2015). Heavy nitrate corrosion in anarobe aquifer injection water biofilm: Process modeling. (external link)
• Schouw, Anders; Bødtker, Gunhild; Steen, Ida Helene (2014). Crude oil degradation to methane gas by a waste water consortium. (external link)
• Wissuwa, Juliane; Steen, Ida Helene; Stokke, Runar (2014). Genomic sequencing analysis of a new thermophilic starch degrading Geobacillus sp. isolate from AMOR hydrothermal vent system. (external link)
• Wissuwa, Juliane; Steen, Ida Helene; Stokke, Runar (2014). Screening of new alfa-amylases from deep-sea hydrothermal vents by multiple (meta)-genomic tools. (external link)
• Bjerga, Gro Elin Kjæreng; Larsen, Øivind; Arsin, Hasan et al. (2014). An enzyme discovery and expression pipeline for the conversion of Norwegian biomasses. (external link)
• Vander Roost, Jan Pieter; Thorseth, Ingunn Hindenes; Pedersen, Rolf B. et al. (2014). Comparison of microbial communities within iron-containing mats at different geochemical settings in the Jan Mayen vent field. (external link)
• Steen, Ida Helene; Stokke, Runar; Wissuwa, Juliane 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)
• Le Moine Bauer, Sven; Steen, Ida Helene; Sandaa, Ruth-Anne 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)
• Wissuwa, Juliane; Steen, Ida Helene; Stokke, Runar (2014). Genomic sequencing analysis of a new thermophilic starch degrading Geobacilllus sp. isolate from AMOR hydrothermal vent system. (external link)
• Abboud, Angele Arlette H.; Stokke, Runar; Steen, Ida Helene et al. (2014). Automated Enzyme Function Inference in Archaea Genomes:comparison of PRIAM and EFICAZ. (external link)
• Roalkvam, Irene; Drønen, Asbjørg Karine; Stokke, Runar et al. (2014). Isolation, characterization and genome analysis of a nitrate reducing Arcobacter sp. isolated from saline aquifer water. (external link)
• Drønen, Asbjørg Karine; Steen, Ida Helene; Liengen, Turid et al. (2013). Microbial monitoring of Sub Sea injection water in the North Sea. (external link)
• Drønen, Asbjørg Karine; Roalkvam, Irene; Liengen, Turid et al. (2013). Better handling of microbial influenced corrosion during operation. (external link)
• Steen, Ida Helene; Julianne, Wissuwa; Steinsbu, Bjørn Olav 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)
• Abboud, Angele Arlette H.; Stokke, Runar; Steen, Ida Helene et al. (2013). Expert system for mining and sifting novel enzyme sequences in metagenomics data. (external link)
• Perevalova, Anna; Steen, Ida Helene; Stokke, Runar et al. (2012). Molecular basis for polysaccharides degradation capabilities of Desulfurococcus fermentans, a hyperthermophilic crenarchaeon. (external link)
• Eickmann, Benjamin; Roalkvam, Irene; Baumberger, Tamara 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)
• Thorseth, Ingunn Hindenes; Steen, Ida Helene; Eickmann, Benjamin et al. (2012). Microbial mediated formation of low-temperature hydrothermal barite chimneys. (external link)
• Dahle, Håkon; Roalkvam, Irene; Thorseth, Ingunn Hindenes et al. (2012). Metatranscriptomic and phylogenetic analysis of bacterial mats growing on chimney surfaces at the Loki´s Castle hydrothermal field. (external link)
• Fedøy, Anita-Elin; Leiros, Hanna-Kirsti S.; Steen, Ida Helene et al. (2012). Bacterial subfamiliy II isocitrate dehydrogenase: adaptations to low and high temperatures. (external link)
• Jørgensen, Steffen Leth; Lanzén, Anders; Baumberger, Tamara et al. (2011). High resolution community profiling of stratified sediments associated with Loki’s castle vent field at the Knipovitch spreading ridge. (external link)
• Jørgensen, Steffen Leth; Lanzén, Anders; Baumberger, T et al. (2010). Microbial community composition in the deep-sea sediments flanking the Loki’ castle at the Knipovitch ridge system. (external link)
• Jørgensen, Steffen Leth; Lanzén, Anders; Baumberger, T et al. (2010). Microbial diversity in deep-sea sediments Influence of volcanism and hydrothermal activity. (external link)
• Hocking, William Peter; Roalkvam, Irene; Stokke, Runar et al. (2010). Transcriptome analysis of Arhcaeoglobus fulgidus VC-16 grown on differential substrates. (external link)
• Stokke, Runar; Lanzén, Anders; Thorseth, Ingunn Hindenes et al. (2010). Metaproteomic analysis of a chemosynthetic hydrothermal vents community reveals insight into key-metabolic processes. (external link)
• Hoem, Solveig; Dahle, Håkon; Roalkvam, Irene et al. (2010). Detection of methanotrophic archaea in a barite chimney at Loki’s Castle, the Arctic Mid-Ocean Ridge. (external link)
• Dahle, Håkon; Roalkvam, Irene; Jørgensen, Steffen Leth et al. (2010). Microbial community structure of biomats and chimney walls of the Loki’s Castle hydrothermal field at 73°N. (external link)
• Roalkvam, Irene; Chen, Yifeng; Daae, Frida Lise et al. (2010). Vertical variations in predominance of Thaumarchaeota and anaerobic methanotrophs in methane seep sediments. (external link)
• Haflidason, Haflidi; Steen, Ida Helene; Roalkvam, Irene 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)
• Roalkvam, Irene; Stokke, Runar; Hocking, William Peter et al. (2009). Decreased expression of ATP-sulfurylase and APS-reductase in Archaeoglobus fulgidus during respiration of hydrogen with thiosulfate. (external link)
• Roalkvam, Irene; Stokke, Runar; Fladmark, Kari Espolin et al. (2008). The hyperthermophilic sulfate-reducing archaeon Archaeoglobus fulgidus; a proteomics study on the shift between chemoorganoheterotrophic and chemilithoautotrophic growth. (external link)
• Leiros, Hanna-Kirsti S.; Pey, Angel L.; Innselset, M 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)
• Fedøy, Anita-Elin; Yang, Nannan; Leiros, Hanna-Kirsti S. et al. (2006). Biochemical and structural basis of cold-adaptation in isocitrate dehydrogenase from Desulfotalea psychrophila. (external link)
• Steen, Ida Helene; Fedøy, Anita-Elin; Yang, Nannan et al. (2006). Biochemical characterization and structure analysis of extremophilic isocitrate dehydrogenase. (external link)
• Fedøy, Anita-Elin; Karlstrøm, Mikael; Ladenstein, Rudolf et al. (2006). Biochemical characterization and structure analysis of extremophilic isocitrate dehydrogenase. (external link)
• Fedøy, Anita-Elin; Glærum, Lisbeth; Madsen, Marit Steine et al. (2005). Molecular adaptations of isocitrate dehydrogenase to extreme temperatures. (external link)
• Yang, Nannan; Karlsen, Solveig; Steen, Ida Helene et al. (2005). 1.75 Å crystal structure of isocitrate dehydrogenase from Desulfotalea psychrophila. (external link)
• Stokke, Runar; Steen, Ida Helene; Karlstrom, Mikael et al. (2005). Molecular Adaptation of Isocitrate Dehydrogenase to Extreme Temperatures. (external link)
• Stokke, Runar; Steen, Ida Helene; Madsen, Marit et al. (2005). Thermostabilization of Isocitrate Dehydrogenase by Domain Swapping. (external link)
• Yang, Nannan; Steen, IH; Karlsen, Solveig et al. (2004). Isocitrate dehydrogenases from various organisms: a model system to study structural basis of biological adaptations to extreme temperatures. (external link)
• Stokke, Runar; Steen, Ida Helene; Karlstrøm, Mikael et al. (2004). Investigation of factors involved in thermostability of isocitrate dehydrogenase from the hyperthermophilic archaeon Aeropyrum pernix. (external link)
• Yang, N; Steen, Ida Helene; Karlsen, S et al. (2004). Isocitrate dehydrogenases from various organisms: a model system to study structural basis of biological adaptations to extreme temperatures. (external link)
• Steen, Ida Helene; Birkeland, Nils-Kåre; Lien, Torleiv (1999). <I>Archaeoglobus fulgidus</I> Isocitrate Dehydrogenase, Malate Dehydrogenase and Glutamate Dehydrogenase. (external link)

Lecture

• Steen, Ida Helene (2022). Arctic Deep-Sea hydrothermal Vents: from basic knowledge to applications. (external link)
• Steen, Ida Helene (2022). Diving deep for the discovery of new marine enzymes. (external link)
• Steen, Ida Helene (2020). A perspective from Bergen: Deep Ocean bioprospecting, metagenomics and public databases. (external link)
• Steen, Ida Helene (2019). Marine bioprospecting. (external link)
• Steen, Ida Helene (2019). Summary of research activities WP1 - Environmental sampling. (external link)
• Steen, Ida Helene (2018). Forskningsaktiviteter og infrastruktur ved KG Jebsen Senter for Dyphavsforskning og Havlaboratoriet. (external link)
• Steen, Ida Helene (2018). Biodiscovery and bioprospecting activities at KG Jebsen Centre for Deep-Sea Research. (external link)
• Steen, Ida Helene (2017). Marine bioprospecting activities at KG Jebsen Centre for Deep Sea Research. (external link)
• Steen, Ida Helene (2017). The Virus-X project. (external link)
• Steen, Ida Helene (2017). Black smokers-Extreme life conditions and applications. (external link)
• Steen, Ida Helene (2017). Value chains and innovation of life in deep-sea hydrothermal vents - the InMare and Virus-X projects. (external link)
• Bjerga, Gro Elin Kjæreng; Larsen, Øivind; Stokke, Runar et al. (2015). An enzyme discovery and expression pipeline for the conversion of marine biomasses. (external link)
• Steen, Ida Helene (2015). The value of biodiversity. (external link)
• Steen, Ida Helene (2015). Exploitation of genetic resources from the Arctic mid-ocean ridge vent fields in the norwegian industry. (external link)
• Steen, Ida Helene (2014). Biotechnology at GeoBIO-SFF. (external link)
• Stokke, Runar; Dahle, Håkon; Roalkvam, Irene et al. (2014). Metagenomic study of a filamentous microbial mat from the Loki´s Castle Vent Field. (external link)
• Dahle, Håkon; Økland, Ingeborg Elisabet; Roalkvam, Irene et al. (2014). Towards a framework for analyses of how energy landscapes shape microbial communities in deep-sea hydrothermal systems. (external link)

Academic literature review

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

Report

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

Popular scientific lecture

• Steen, Ida Helene (2019). Microbial life in deep-sea hydrothermal vent systems. (external link)
• Steen, Ida Helene (2019). Separasjon av enzymer for bruk i bioteknologi. (external link)
• Steen, Ida Helene (2017). Erfaring med InMare. (external link)
• Steen, Ida Helene (2017). Et innovasjonsdykk i dyphavet. (external link)
• Steen, Ida Helene (2016). Marin Bioprospektering. (external link)
• Steen, Ida Helene (2014). Mikrobielt liv i ekstreme miljø. (external link)
• Steen, Ida Helene (2013). Diversitet, funksjon og bioteknologisk anvendelse av mikroorganimser i dyp-marine varme kilder. (external link)
• Steen, Ida Helene (2012). Microbial life in the Arctic Mid-Ocean Vent Fields. (external link)
• Steen, Ida Helene (1997). Isocitrate dehydrogenase from the sulfate reducers Archaeoglobus fulgidus and Desulfobacter vibrioformis. (external link)

Museum exhibition

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

Short communication

• Coscolin, Cristina; Martínez-Martínez, Mónica; Chow, Jennifer et al. (2018). Relationships between substrate promiscuity and chiral selectivity of esterases from phylogenetically and environmentally diverse microorganisms. (external link)

Doctoral dissertation

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

Popular scientific article

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

Feature article

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

Programme participation

• Steen, Ida Helene (2015). Schrødingers katt. (external link)

Brochure

• Steen, Ida Helene (2015). Bioprospecting in the deep sea -CGB Annual report. (external link)
• Steen, Ida Helene (2014). Novel enzymes - Biodiscovery in marine metagenomes in BTO Calendar 2014. (external link)

Interview

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

Popular scientific chapter/article

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

Syntrophic conversion of amino acids to methane in hydrothermal vent systems -The main focus of this master project will be to reveal the biochemistry behind syntrophic growth on amino acids of Vallitalea guaymasensis L81 and Methanoplanus limicola by cultivation experiments, proteomics and protein chemistry. Vallitalea guaymasensis L81 is a mesophilic, fermentative microorganisms isolated from the Loki´s Castle vent field.

Sulfate reducing bacteria involved in syntrophic conversion of short chain hydrocabons - The main focus of this master project will be to analyze reconstructed genomes of putative sulfate reducing partners involved in anaerobic conversions of short chain hydrocarbons. Based on metabolic predictions, enrichment cultures will be intitated and growth followed using geochemical and microbiological methods. The main study area will be the Loki´s Castle vent field.