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Ida Helene Steen

Professor
  • E-mailIda.Steen@uib.no
  • Phone+47 55 58 83 75
  • Visitor Address
    Thormøhlensgt. 53 A/B
  • Postal Address
    Postboks 7803
    5020 Bergen

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?

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

MSc-student Ida-Marie Leirvåg. Characterization of novel viral proteins - A potential for bioprospecting.

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

PhD-candidate Francesca Vulcano (UiB). Short chain hydrocarbon degraders in hydrothermal vents systems on the Arctic Mid-Ocean Ridge.

PhD-candidate Petra Hribovsek (UiB). Investigating the ecology, evolution and metabolism of novel deep-sea hydrothermal lineages.

PhD-candidate Hasan Arsin (UiB, NorZymeD). Industrial application of proteases deriving from extreme environments.

Graduated

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 mechnisms 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 article
  • Le Moine Bauer, Sven; Sjøberg, Andreas Gilje; L´Haridon, Stephane; Stokke, Runar; Roalkvam, Irene; Steen, Ida Helene; Dahle, Håkon. 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. International Journal of Systematic and Evolutionary Microbiology. 975-981.
  • Vuoristo, Kiira; Fredriksen, Lasse; Oftebro, Maren; Arntzen, Magnus Øverlie; Aarstad, Olav Andreas; Stokke, Runar; Steen, Ida Helene; Hansen, Line Degn; Schüller, Reidar Barfod; Aachmann, Finn Lillelund; Horn, Svein Jarle; Eijsink, Vincent. 2019. Production, characterization, and application of an alginate lyase, AMOR_PL7A, from hot vents in the Arctic mid-ocean ridge. Journal of Agricultural and Food Chemistry. 2936-2945.
  • Stepnov, Anton; Fredriksen, Lasse; Steen, Ida Helene; Stokke, Runar; Eijsink, Vincent. 2019. Identification and characterization of a hyperthermophilic GH9 cellulase from the Arctic Mid-Ocean Ridge vent field. PLOS ONE.
  • Fredriksen, Lasse; Stokke, Runar; Jensen, Marianne Slang; Westereng, Bjørge; Jameson, John-Kristian; Steen, Ida Helene; Eijsink, Vincent. 2019. Discovery of a Thermostable GH10 Xylanase with Broad Substrate Specificity from the Arctic Mid-Ocean Ridge Vent System. Applied and Environmental Microbiology. 1-16.
  • Le Moine Bauer, Sven; Stensland, Anne; Daae, Frida Lise; Sandaa, Ruth-Anne; Thorseth, Ingunn Hindenes; Steen, Ida Helene; Dahle, Håkon. 2018. Water masses and depth structure prokaryotic and T4-like viral communities around hydrothermal systems of the Nordic Seas. Frontiers in Microbiology. 1-17.
  • Schouw, Anders; Vulcano, Francesca; Roalkvam, Irene; Hocking, William Peter; Reeves, Eoghan; Stokke, Runar; Bødtker, Gunhild; Steen, Ida Helene. 2018. Genome analysis of Vallitalea guaymasensis strain L81 isolated from a deep-sea hydrothermal vent system. Microorganisms.
  • Dahle, Håkon; Le Moine Bauer, Sven; Baumberger, Tamara; Stokke, Runar; Pedersen, Rolf B.; Thorseth, Ingunn Hindenes; Steen, Ida Helene. 2018. Energy landscapes in hydrothermal chimneys shape distribution of primary producers. Frontiers in Microbiology.
  • Vander Roost, Jan Pieter; Daae, Frida Lise; Steen, Ida Helene; Thorseth, Ingunn Hindenes; Dahle, Håkon. 2018. Distribution patterns of iron-oxidizing Zeta- and Beta-Proteobacteria from different environmental settings of the Jan Mayen vent fields. Frontiers in Microbiology.
  • Ferrer, Manuel; Méndez-García, Celia; Bargiela, Rafael; Chow, Jennifer; Alonso, Sandra; Garcia-Moyano, Antonio; Bjerga, Gro Elin Kjæreng; Steen, Ida Helene; Schwabe, Tatjana; Blom, Charlotte; Vester, Jan Kjølhede; Weckbecker, Andrea; Shahgaldian, Patrick; de Carvalho, Carla C.C.R.; Meskys, Rolandas; Zanaroli, Giulio; Glöckner, Frank Oliver; Fernandez-Guerra, Antonio; Thambisetty, Siva; de la Calle, Fernando; Golyshina, Olga V.; Yakimov, Michail M.; Jaeger, Karl-Erich; Yakunin, Alexander F.; Streit, Wolfgang R.; McMeel, Oonagh; Calewaert, Jan Bart; Tonné, Nathalie; Golyshin, Peter N. 2018. Decoding the Ocean’s Microbiological Secrets for Marine Enzyme Biodiscovery. FEMS Microbiology Letters.
  • Martínez-Martínez, Monica; Cascolín, Cristina; Santiago, Gerard; Chow, Jennifer; Stogios, Peter J.; Bargiela, Rafael; Gertler, Christoph; Navarro-Fernandez, Jose; Bollinger, Alexander; Thies, Stephan; Méndez-García, Celia; Popovic, Ana; Brown, Greg; Chernikova, Tatyana N.; Garcia-Moyano, Antonio; Bjerga, Gro Elin Kjæreng; Pérez-García, Pablo; Hai, Tran; Del Pozo, Merceded V.; Stokke, Runar; Steen, Ida Helene; Cui, Hong; Xiaohui, Xui; Nocek, Boguslaw P.; Alcaide, María; Distaso, Marco; Mesa, Victoria; Peláez, Ana I.; Sánchez, Jesùs; Buchholz, Patrick C. F.; Pleiss, Jürgen; Fernándes-Guerra, Antonio; Glöckner, Frank O.; Golyshina, Olga V.; Yakimov, Michail M.; Savchenko, Alexei; Jaeger, Karl-Erich; Yakunin, Alexander F.; Streit, Wolfgang R.; Golyshin, Peter N.; Guallar, Víctor; Ferrer, Manuel. 2017. Determinants and Prediction of Esterase Substrate Promiscuity Patterns. Journal of the American Chemical Society. 225-234.
  • Wissuwa, Juliane; Le Moine Bauer, Sven; Steen, Ida Helene; Stokke, Runar. 2017. Complete genome sequence of Lutibacter profoundi LP1T isolatet from an Arctic deep-sea hydrothermal vent system. Standards in Genomic Sciences. 1-11.
  • Tvedt, Morten Walløe; Eijsink, Vincentius Gerardus Henricus; Steen, Ida Helene; Strand, Roger; Rosendal, Guri Kristin. 2016. The missing link in ABS: The relationship between resource and product. Environmental Policy and Law. 227-237.
  • Steen, Ida Helene; Dahle, Håkon; Stokke, Runar; Roalkvam, Irene; Daae, Frida Lise; Rapp, Hans Tore; Pedersen, Rolf B.; Thorseth, Ingunn Hindenes. 2016. Novel barite chimneys at the Loki´s Castle vent field shed light on key factors shaping microbial communities and functions in hydrothermal systems. Frontiers in Microbiology.
  • Steinsbu, Bjørn Olav; Røyseth, Victoria; Thorseth, Ingunn Hindenes; Steen, Ida Helene. 2016. Marinitoga arctica sp. Nov., a thermophilic, anaerobic heterotroph isolated from a Mid-Ocean Ridge vent field. International Journal of Systematic and Evolutionary Microbiology. 5070-5076.
  • Le Moine Bauer, Sven; Roalkvam, Irene; Steen, Ida Helene; Dahle, Håkon. 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. International Journal of Systematic and Evolutionary Microbiology. 2671-2677.
  • Wissuwa, Juliane; Stokke, Runar; Fedøy, Anita-Elin; Lian, Kjersti; Smalås, Arne O.; Steen, Ida Helene. 2016. Isolation and complete genome sequence of the thermophilic Geobacillus sp. 12AMOR1 from an Arctic deep-sea hydrothermal vent site. Standards in Genomic Sciences. 1-12.
  • Schouw, Anders; Eide, Tove Leiknes; Stokke, Runar; Pedersen, Rolf B.; Steen, Ida Helene; Bødtker, Gunhild. 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. International Journal of Systematic and Evolutionary Microbiology. 1724-1734.
  • Roalkvam, Irene; Drønen, Karine; Stokke, Runar; Daae, Frida Lise; Dahle, Håkon; Steen, Ida Helene. 2015. Physiological and genomic characterization of Arcobacter anaerophilus IR-1 reveals new metabolic features in Epsilonproteobacteria. Frontiers in Microbiology.
  • Roalkvam, Irene; Bredy, Florian; Baumberger, Tamara; Pedersen, Rolf B.; Steen, Ida Helene. 2015. Hypnocyclicus thermotrophus gen. Nov., sp. nov. isolated from a microbial mat in a hydrothermal vent field. International Journal of Systematic and Evolutionary Microbiology. 4521-4525.
  • Stokke, Runar; Dahle, Håkon; Roalkvam, Irene; Wissuwa, Juliane; Daae, Frida Lise; Tooming-Klunderud, Ave; Thorseth, Ingunn Hindenes; Pedersen, Rolf B.; Steen, Ida Helene. 2015. Functional interactions among filamentous Epsilonproteobacteria and Bacteroidetes in a deep-sea hydrothermal vent biofilm. Environmental Microbiology. 4063-4077.
  • Dahle, Håkon; Økland, Ingeborg Elisabet; Thorseth, Ingunn Hindenes; Pedersen, Rolf B.; Steen, Ida Helene. 2015. Energy landscapes shape microbial communities in hydrothermal systems on the Arctic Mid-Ocean Ridge. The ISME Journal. 1593-1606.
  • Hocking, William Peter; Roalkvam, Irene; Magnussen, Carina ; Stokke, Runar; Steen, Ida Helene. 2015. Assessment of the carbon monoxide metabolism of the hyperthermophilic sulfate-reducing archaeon Archaeoglobus fulgidus VC-16 by comparative transcriptome analyses. Archaea. 12 pages.
  • Drønen, Karine; Roalkvam, Irene; Beeder, Janiche; Torsvik, Terje; Steen, Ida Helene; Skauge, Arne; Liengen, Turid. 2014. Modeling of heavy nitrate corrosion in anaerobe aquifer injection water biofilm: A case study in a flow rig. Environmental Science and Technology. 8627-8635.
  • Urich, Tim; Lanzén, Anders; Stokke, Runar; Pedersen, Rolf B.; Bayer, Christoph; Thorseth, Ingunn Hindenes; Schleper, Christa Maria; Steen, Ida Helene; Øvreås, Lise. 2014. Microbial community structure and functioning in marine sediments associated with diffuse hydrothermal venting assessed by integrated meta-omics. Environmental Microbiology. 2699-2710.
  • Hocking, William Peter; Stokke, Runar; Roalkvam, Irene; Steen, Ida Helene. 2014. Identification of key components in the energy metabolism of Archaeoglobus fulgidus by transcriptome analyses. Frontiers in Microbiology.
  • Dahle, Håkon; Roalkvam, Irene; Pedersen, Rolf B.; Thorseth, Ingunn Hindenes; Steen, Ida Helene. 2013. The versatile in situ gene expression of an Epsilonproteobacteria-dominated biofilm from a hydrothermal chimney. Environmental Microbiology Reports. 282-290.
  • Stokke, Runar; Hocking, William Peter; Steinsbu, Bjørn Olav; Steen, Ida Helene. 2013. Complete genome sequence of the thermophilic and facultatively chemolithoautotrophic sulfate reducer Archaeoglobus sulfaticallidus PM70-1T. Microbiology Resource Announcements (MRA).
  • Leiros, Hanna-Kirsti S.; Fedøy, Anita-Elin; Leiros, Ingar; Steen, Ida Helene. 2012. The complex structures of isocitrate dehydrogenase from Clostridium thermocellum and Desulfotalea psychrophila support a new active site locking mechanism. FEBS Open Bio.
  • Stokke, Runar; Roalkvam, Irene; Lanzén, Anders; Haflidason, Haflidi; Steen, Ida Helene. 2012. Integrated metagenomic and metaproteomic analyses of an ANME-1-dominated community in marine cold seep sediments. Environmental Microbiology. 1333-1346.
  • Roalkvam, Irene; Dahle, Håkon; Chen, Yifeng; Jørgensen, Steffen Leth; Haflidason, Haflidi; Steen, Ida Helene. 2012. Fine-scale community structure analysis of ANME in Nyegga sediments with high and low methane flux. Frontiers in Microbiology. 1-13.
  • Ray, Jessica Louise; Dondrup, Michael; Modha, Sejal; Steen, Ida Helene; Sandaa, Ruth-Anne; Clokie, Martha. 2012. Finding a needle in the virus metagenome haystack - micro-metagenome analysis captures a snapshot of the diversity of a bacteriophage armoire. PLOS ONE. 13 pages.
  • Jørgensen, Steffen Leth; Hannisdal, Bjarte; Lanzén, Anders; Baumberger, Tamara; Flesland, Kristin; Fonseca, Rita; Øvreås, Lise; Steen, Ida Helene; Thorseth, Ingunn Hindenes; Pedersen, Rolf B.; Schleper, Christa Maria. 2012. Correlating microbial community profiles with geochemical data in highly stratified sediments from the Arctic Mid-Ocean Ridge. Proceedings of the National Academy of Sciences of the United States of America. E2846-E2855.
  • Roalkvam, Irene; Jørgensen, Steffen Leth; Chen, Yifeng; Stokke, Runar; Dahle, Håkon; Hocking, William Peter; Lanzén, Anders; Haflidason, Haflidi; Steen, Ida Helene. 2011. New insight into stratification of anaerobic methanotrophs in cold seep sediments. FEMS Microbiology Ecology. 233-243.
  • Karlström, Mikael; Chiaraluce, Roberta; Giangiacomo, Laura; Steen, Ida Helene; Birkeland, Nils-Kåre; Ladenstein, Rudolf; Consalvi, Valerio. 2010. Thermodynamic and kinetic stability of a large multi-domain enzyme from the hyperthermophile Aeropyrum pernix. Extremophiles. 213-223.
  • Siltberg-Liberles, Jessica; Steen, Ida Helene; Svebak, Randi Myrseth; Martinez, Aurora. 2008. The phylogeny of the aromatic amino acid hydroxylases revisited by characterizing phenylalanine hydroxylase from Dictyostelium discoideum. Gene. 86-92.
  • Stokke, R; Leiros, Ingar; Karlström, Mikael; Karlstrom, M; Yang, Nannan; Ladenstein, R; Birkeland, NK; Steen, IH. 2007. Thermal stability of isocitrate dehydrogenase from Archaeoglobus fulgidus studied by crystal structure analysis and engineering of chimers. Extremophiles.
  • Stokke, Runar; Birkeland, Nils-Kåre; Steen, Ida Helene. 2007. Thermal stability and biochemical properties of isocitrate dehydrogenase from the thermoacidophilic archaeon Thermoplasma acidophilum. Extremophiles. 397-402.
  • Leiros, Hanna-Kirsti S.; Pey, AL; Innselset, M; Innselset, Marte; Moe, Elin; Leiros, Ingar; Steen, IH; Martinez, A. 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. Journal of Biological Chemistry.
  • Fedøy, Anita-Elin; Fedoy, AE; Yang, Nannan; Martinez, A; Leiros, Hanna-Kirsti S.; Steen, IH. 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. Journal of Molecular Biology. 130-149.
  • Stokke, Runar; Madern, Dominique; Fedøy, Anita-Elin; Fedøy, Anita-Elin; Karlsen, Solveig; Birkeland, Nils-Kåre; Steen, Ida Helene. 2007. Biochemical characterization of isocitrate dehydrogenase from Methylococcus capsulatus reveals a unique NAD(+)-dependent homotetrameric enzyme. Archives of Microbiology.
  • Karlström, Mikael; Steen, Ida Helene; Madern, Dominique; Fedøy, Anita-Elin; Birkeland, Nils-Kåre; Ladenstein, Rudolf. 2006. The crystal structure of a hyperthermostable subfamily II isocitrate dehydrogenase from Thermotoga maritima. The FEBS Journal. 2851-2868.
  • Karlström, Mikael; Stokke, Runar; Steen, Ida Helene; Birkeland, Nils-Kåre; Ladenstein, Rudolf. 2005. Isocitrate dehydrogenase from the hyperthermophile Aeropyrum pernix: X-ray structure analysis of a ternary enzyme-substrate complex and thermal stability. Journal of Molecular Biology. 559-577.
  • Steen, Ida Helene; Madsen, Marit Steine; Birkeland, Nils-Kåre; Lien, Torleiv. 2002. Identification of cofactor discrimination siten in NAD-isocitrate dehydrogenase from Pyrococcus furious. Archives of Microbiology. 297-300.
  • Madern, Dominique; Ebel, C.; Dale, Hege Avsnes; Lien, Torleiv; Steen, Ida Helene; Birkeland, Nils-Kåre; Zaccai, G. 2001. Differences in the oligomeric state of the LDH-like L-MalDH from the hyperthermophilic archaea Methanococcus jannaschii and Archaeoglobus fulgidus. Biochemistry. 10310-10316.
  • Steen, Ida Helene; Madern, Dominique; Karlstrøm, Mikael; Lien, Torleiv; Ladenstein, R; Birkeland, Nils-Kåre. 2001. Comparison of isocitrate dehydrogenase from three different hyperthermophiles reveals differences in thermostability, cofactor specificity, oligomeric state and phylogenetic affiliation. Journal of Biological Chemistry. 43924-43931.
  • Steen, Ida Helene; Hvoslef, Hilde; Birkeland, Nils-Kåre; Lien, Torleiv. 2001. Archaeoglobus fulgidus isocitrate dehydrogenase, malate dehydrogenase and glutamate dehydrogenase. Methods in Enzymology. 13-26.
  • Steen, Ida Helene; Madsen, Marit Steine; Birkeland, Nils-Kåre; Lien, Torleiv. 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. FEMS Microbiology Letters. 469-474.
  • Lien, Torleiv; Madsen, Marit Steine; Steen, Ida Helene; Gjerdevik, Kjersti. 1998. Desulfobulbus rhabdoformis sp. nov., a sulfate reducer from a water-oil separation system. International Journal of Systematic Bacteriology. 469-474.
  • Aalen, Nina; Steen, Ida Helene; Birkeland, Nils-Kåre; Lien, Torleiv. 1997. Purification and properties of an extremely thermostable NADP-specific glutamate dehydrogenase from Archaeoglobus fulgidus. Archives of Microbiology. 536-539.
  • Langelandsvik, Anne Siri; Steen, Ida Helene; Birkeland, Nils-Kåre; Lien, Torleiv. 1997. Properties and primary structure of a thermostable L-malate dehydrogenase from Archaeoglobus fulgidus. Archives of Microbiology. 59-67.
  • Steen, Ida Helene; Lien, Torleiv; Birkeland, Nils-Kåre. 1997. Biochemical and phylogenetic characterization of isocitrate dehydrogenase from a hyperthermophilic archaeon, Archaeoglobus fulgidus. Archives of Microbiology. 412-420.
Report
  • Marques, Ana Filipa Alfaia; Pedersen, Rolf B.; Thorseth, Ingunn Hindenes; Baumberger, Tamara; Roerdink, Desiree; Jørgensen, Steffen Leth; Økland, Ingeborg Elisabet; Olsen, Bernd; Steen, Ida Helene; Hamelin, Cedric; Denny, Alden Ross; Bretel, Patrice. 2015. Arctic Mid-Ocean Ridge, NORMAR/CGB 2015 Test Cruise, R/V G.O.SARS, Senter for Geobiologi. .
Lecture
  • Steen, Ida Helene. 2018. Forskningsaktiviteter og infrastruktur ved KG Jebsen Senter for Dyphavsforskning og Havlaboratoriet.
  • Steen, Ida Helene. 2018. Biodiscovery and bioprospecting activities at KG Jebsen Centre for Deep-Sea Research.
  • Steen, Ida Helene. 2017. Value chains and innovation of life in deep-sea hydrothermal vents - the InMare and Virus-X projects.
  • Steen, Ida Helene. 2017. The Virus-X project.
  • Steen, Ida Helene. 2017. Marine bioprospecting activities at KG Jebsen Centre for Deep Sea Research.
  • Steen, Ida Helene. 2017. Black smokers-Extreme life conditions and applications.
  • Steen, Ida Helene. 2015. The value of biodiversity.
  • Steen, Ida Helene. 2015. Exploitation of genetic resources from the Arctic mid-ocean ridge vent fields in the norwegian industry.
  • Bjerga, Gro Elin Kjæreng; Larsen, Øivind; Stokke, Runar; Puntervoll, Pål; Steen, Ida Helene; Kleivdal, Hans Torstein. 2015. An enzyme discovery and expression pipeline for the conversion of marine biomasses.
  • Dahle, Håkon; Økland, Ingeborg Elisabet; Roalkvam, Irene; Thorseth, Ingunn Hindenes; Pedersen, Rolf B.; Steen, Ida Helene. 2014. Towards a framework for analyses of how energy landscapes shape microbial communities in deep-sea hydrothermal systems.
  • Stokke, Runar; Dahle, Håkon; Roalkvam, Irene; Daae, Frida Lise; Thorseth, Ingunn Hindenes; Pedersen, Rolf B.; Steen, Ida Helene. 2014. Metagenomic study of a filamentous microbial mat from the Loki´s Castle Vent Field.
  • Steen, Ida Helene. 2014. Biotechnology at GeoBIO-SFF.
Popular scientific lecture
  • Steen, Ida Helene. 2017. Et innovasjonsdykk i dyphavet.
  • Steen, Ida Helene. 2017. Erfaring med InMare.
  • Steen, Ida Helene. 2016. Marin Bioprospektering.
  • Steen, Ida Helene. 2014. Mikrobielt liv i ekstreme miljø.
  • Steen, Ida Helene. 2013. Diversitet, funksjon og bioteknologisk anvendelse av mikroorganimser i dyp-marine varme kilder.
  • Steen, Ida Helene. 2012. Microbial life in the Arctic Mid-Ocean Vent Fields.
  • Steen, Ida Helene. 1997. Isocitrate dehydrogenase from the sulfate reducers Archaeoglobus fulgidus and Desulfobacter vibrioformis.
Academic lecture
  • Steen, Ida Helene. 2018. Biodiscovery and bioprospecting of Norwegian deep-sea hydrothermal vent systems.
  • Sandaa, Ruth-Anne; Ray, Jessica Louise; Enoult, Francois; Vik Johannessen, Torill; Bratbak, Gunnar; Larsen, Aud; Steen, Ida Helene. 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 .
  • Jensen, Marianne Slang; Fredriksen, Lasse; Altermark, Bjørn; Stokke, Runar; Mackenzie, Alasdair; Pope, Phillip; Kunath, Benoit Josef; Johansen, Joakim; Smalås, Arne O.; Steen, Ida Helene; Vaaje-Kolstad, Gustav; Eijsink, Vincentius Gerardus Henricus. 2017. Bioprospecting of enzymes for processing lignocellulosic biomass.
  • Steen, Ida Helene. 2016. Biodiscovery and bioprospecting of molecules from deep-sea organisms.
  • Roalkvam, Irene; Drønen, Karine; Stokke, Runar; Steen, Ida Helene. 2015. Isolation, characterization and genome analysis of a nitrate reducing Arcobacter sp. isolated from saline aquifer water.
  • Schouw, Anders; Eide, Tove Leiknes; Stokke, Runar; Pedersen, Rolf B.; Steen, Ida Helene; Bødtker, Gunhild. 2015. Isolation and characterization of a novel syntrophic alkane degrading bacterium from the Loki's castle hydrothermal vent field.
  • Steen, Ida Helene. 2015. Exploitation of genetic resources from the Arctic mid-ocean ridge vent fields in the norwegian industry.
  • Stokke, Runar; Steen, Ida Helene. 2015. Capturing of microbial dark matter in deep sea hydrothermal vents by using in situ colonizers.
  • Dahle, Håkon; Økland, Ingeborg Elisabet; Thorseth, Ingunn Hindenes; Pedersen, Rolf B.; Steen, Ida Helene. 2014. Use of metatranscriptomics, amplicon pyrosequencing and thermodynamics to assess how microbial communities are shaped by energy availability.
  • Steen, Ida Helene; Dahle, Håkon; Roalkvam, Irene; Stokke, Runar; Thorseth, Ingunn Hindenes; Pedersen, Rolf B. 2014. Microbial communities associated with low-temperature venting barite chimneys in the Loki´s Castle black smoker field.
  • Steen, Ida Helene; Dahle, Håkon; Roalkvam, Irene; Stokke, Runar; Thorseth, Ingunn Hindenes; Pedersen, Rolf B. 2014. Microbial communities associated with low-temparture venting barite chimneys in the Loki´s Castle black smoker field.
  • Dahle, Håkon; Økland, Ingeborg Elisabet; Thorseth, Ingunn Hindenes; Pedersen, Rolf B.; Steen, Ida Helene. 2014. Energy landscapes shape microbial communities and the distribution of biosignatures in hydrothermal systems on the Arctic Mid-Ocean Ridge.
  • Jørgensen, Steffen Leth; Hannisdal, Bjarte; Thorseth, Ingunn Hindenes; Pedersen, Rolf B.; Baumberger, Tamara; Flesland, Kristin; Steen, Ida Helene; Schleper, Christa Maria; Lanzén, Anders; Øvreås, Lise. 2014. Correlating abundances of archaeal lineages and geochemical parameters in deep-sea marine sediments.
  • Dahle, Håkon; Økland, Ingeborg Elisabet; Pedersen, Rolf B.; Thorseth, Ingunn Hindenes; Steen, Ida Helene. 2013. Thermodynamic constraints on the microbial ecology and biogeochemical cycling in deep-sea hydrothermal systems.
  • Steen, Ida Helene. 2013. Microbial life in the Arctic Mid-Ocean Vent Fields.
  • Steen, Ida Helene. 2013. Hvordan oppdage nye enzymer?
  • Thorseth, Ingunn Hindenes; Eickmann, Benjamin; Steen, Ida Helene; Dahle, Håkon; Baumberger, Tamara; Peters, M; Strauss, Harald; Pedersen, Rolf B. 2013. Formation of barite chimneys at low-temperature hydrothermal venting: evidence for complex geobio-interactions.
  • Wissuwa, Juliane; Stokke, Runar; Steen, Ida Helene. 2013. Exposure the biotechnological potential in microbial communities at the Arctic Mid-Ocean Ridge Vent Fields.
  • Jørgensen, Steffen Leth; Lanzén, Anders; Baumberger, Tamara; Hannisdal, Bjarte; Thorseth, Ingunn Hindenes; Pedersen, Rolf B.; Øvreås, Lise; Flesland, Kristin; Fonseca, Rita; Schleper, Christa Maria; Steen, Ida Helene. 2013. Correlating microbial community structure with geochemical data in sediments from the Arctic Mid-Ocean Ridge.
  • Wissuwa, Juliane; Stokke, Runar; Steen, Ida Helene. 2013. Assessment of the biotechnological potential of AMOR:(meta)genomics, protein expression and characterisation.
  • Stokke, Runar; Dahle, Håkon; Steen, Ida Helene. 2012. Metagenomics of arctic hydrothermal vent biofilms.
  • Stokke, Runar; Steen, Ida Helene. 2012. Metagenomics at arctic deep-sea hydrothermal vent systems.
  • Stokke, Runar; Roalkvam, Irene; Steen, Ida Helene. 2012. Exploring Metagenomes.
  • Jørgensen, Steffen Leth; Pedersen, Rolf B.; Thorseth, Ingunn Hindenes; Baumberger, Tamara; Flesland, Kristin; Øvreås, Lise; Lanzén, Anders; Hannisdal, Bjarte; Steen, Ida Helene; Fonseca, Rita; Schleper, Christa Maria. 2012. Correlating geochemical data with microbial community structure in highly stratified sediments from the Arctic mid-ocean ridge.
  • Thorseth, Ingunn Hindenes; Steen, Ida Helene; Roalkvam, Irene; Dahle, Håkon; Stokke, Runar; Rapp, Hans Tore; Pedersen, Rolf B. 2011. Microbial processes and biomineralisation associated with low-temperature venting and formation of barite chimneys at Loki's Castle hydrothermal field.
  • Thorseth, Ingunn Hindenes; Steen, Ida Helene; Roalkvam, Irene; Stokke, Runar; Rapp, Hans Tore; Pedersen, Rolf-Birger. 2010. Microbial life associated with low-temperature hydrothermal venting and formation of barite chimneys at Loki’s Castle vent field.
  • Steen, Ida Helene. 2010. Microbial communities in cold seeps, Nyegga, Mid-Norwegian shelf.
  • Steen, Ida Helene; Stokke, Runar; Lanzén, Anders; Pedersen, Rolf-Birger; Øvreås, Lise; Urich, Tim. 2010. Metaproteomic Analysis of a Chemosynthetic Hydrothermal Vent Community Reveals Insights into Key-Metabolic Processes.
  • Rapp, Hans Tore; Schander, Christoffer; Halanych, K M; Levin, Lisa; Sweetman, Andrew K; Tverberg, Joar; Hoem, Solveig; Steen, Ida Helene; Thorseth, Ingunn Hindenes; Pedersen, Rolf-Birger. 2010. Investigations of a novel fauna from hydrothermal vents along the Arctic Mid-Ocean Ridge (AMOR).
  • Pedersen, Rolf-Birger; Thorseth, Ingunn Hindenes; Rapp, Hans Tore; Schander, Christoffer; Steen, Ida Helene; Øvreås, Lise; Lilley, Marvin D. 2010. Geobiology of hydrothermal vent fields in the Norwegian-Greenland Sea.
  • Steen, Ida Helene. 2010. Anaerobic methanotrophs - from cold seeps to hot vents.
  • Dahle, Håkon; Roalkvam, Irene; Jørgensen, Steffen Leth; Stokke, Runar; Thorseth, Ingunn Hindenes; Pedersen, Rolf B.; Steen, Ida Helene. 2010. A variety of microbial mats cover the chimney walls of the Loki's Castle hydrothermal field.
  • Haflidason, Haflidi; Steen, Ida Helene; Hjelstuen, Berit Oline Blihovde; Hocking, William Peter; Daae, Frida Lise; Chen, Yifeng; Vaular, Espen Nesheim; Todt, Christiane. 2009. The extreme environments of the active seafloor seep pockmarks at Nyegga, the upper Mid-Norwegian margin: a multidisciplinary geological, biological and geochemical study.
  • Haflidason, Haflidi; Steen, Ida Helene; Hjelstuen, Berit Oline Blihovde; Hocking, William Peter; Chen, Yifeng; Vaular, Espen Nesheim; Daae, Frida Lise; Todt, Christiane; Portnova, Daria. 2009. The extreme environment of active gas hydrate bearing pockmarks at Nyegga: a multidisciplinary geological, biological and geochemical study on the Mid-Norwegian margin.
  • Fedøy, Anita-Elin; Yang, Nannan; Martinez, Aurora; Leiros, Hanna-Kirsti S.; Steen, Ida Helene. 2008. A cold-active enzyme with an unusual high thermal stability: Isocitrate dehydrogenase from the psychrophilic bacterium Desulfotalea psychrophila.
  • Steen, Ida Helene; Karlstrøm, Mikael; Stokke, Runar; Ladenstein, Rudolf; Birkeland, Nils-Kåre. 2004. Molecular adaptation of isocitrate dehydrogenase to high temperature.
  • Steen, Ida Helene; Madsen, Marit Steine; Lien, Torleiv; Birkeland, Nils-Kåre. 2000. Isocitrate dehydrogenase from Aeropyrum pernix.
  • Aalen, Nina; Langelandsvik, Anne Siri; Lien, Torleiv; Steen, Ida Helene. 1996. Purification and characterization of glutamate dehydrogenase from the thermophilic archaea Archaeoglobus fulgidus strain 7324.
  • Langelandsvik, Anne Siri; Aalen, Nina; Birkeland, Nils-Kåre; Lien, Torleiv; Steen, Ida Helene. 1996. L-Malate dehydrogenase from the hyperthermophilic archaeon Archaeoglobus fulgidus.
  • Hvoslef, Hilde; Steen, Ida Helene; Lien, Torleiv; Birkeland, Nils-Kåre. 1996. Expression of a thermostable isocitrate dehydrogenase from the hyperthermophilic Archaeoglobus fulgidus in Escherichia coli.
  • Hvoslef, Hilde; Steen, Ida Helene; Lien, Torleiv; Birkeland, Nils-Kåre. 1996. Expression of a thermostable isocitrate dehydrogenase from the hyperthermophilic Archaeoglobus fulgidus in Escherichia coli.
  • Steen, Ida Helene; Hvoslef. Hilde, [Mangler fornavn]; Lien, Torleiv; Birkeland, Nils-Kåre. 1996. Archaeoglobus fulgidus isocitrate dehydrogenase: Purification, characterization, thermostability, genetic analysis and phylogeny.
  • Steen, Ida Helene; Hvoslef, Hilde; Lien, Torleiv; Birkeland, Nils-Kåre. 1996. Archaeoglobus fulgidus isocitrate dehydrogenase: Purification, characterization, thermostability genetic analysis and phylogeny.
Short communication
  • Coscolin, Cristina; Martínez-Martínez, Mónica; Chow, Jennifer; Bargiela, Rafael; Garcia-Moyano, Antonio; Bjerga, Gro Elin Kjæreng; Bollinger, Alexander; Stokke, Runar; Steen, Ida Helene; Golyshina, Olga V.; Yakimov, Michail M.; Jaeger, Karl-Erich; Yakunin, Alexander F.; Streit, Wolfgang R.; Golyshin, Peter N.; Ferrer, Manuel. 2018. Relationships between substrate promiscuity and chiral selectivity of esterases from phylogenetically and environmentally diverse microorganisms. Catalysts. 1-8.
Popular scientific article
  • Steen, Ida Helene. 2016. Norske varmekilder i dyphavet - en underfundig verden full av spennende livsformer. Årbok for Universitetsmuseet i Bergen.
Feature article
  • Steen, Ida Helene. 2016. Et hav av bakterier er et hav av muligheter. Bergens Tidende.
Doctoral dissertation
  • Schouw, Anders. 2018. Isolation and genome analysis of Vallitalea guaymasensis L81; energy metabolism, syntrophy and applications.
  • Wissuwa, Juliane. 2016. The Arctic Mid-Ocean Ridge Vent Fields - A valuable Resource for Marine Bioprospecting?
  • Hocking, William Peter. 2015. Energy conservation mechanisms in the sulfate respiring archaeon Archaeoglobus fulgidus VC16 - assessed by transcriptome profiling and comparative genomics.
  • Jørgensen, Steffen Leth. 2013. Linking microbial community structures and geochemistry in deep-sea sediments & pursuing the link between identity and function.
  • Roalkvam, Irene. 2012. Diversity, stratification and in situ metabolism of anaerobic methanotrophic archaea in Nyegga cold seeps.
  • Stokke, Runar. 2006. Isocitrate dehydrogenase from extremophiles; Molecular adaptations to high temperatures.
  • Steen, Ida Helene. 1998. Isocitrate dehydrogenase from the sulfate reducers Archaeoglobus fulgidus and Desulfobacter vibrioformis:Properties, Primary structure, and Phylogeny.
Interview
  • Steen, Ida Helene. 2015. Researchers to trawl ocean for new biotechnology Resources.
  • Steen, Ida Helene; Pedersen, Rolf B. 2015. Organismer i havet kan være en gullgruve.
  • Steen, Ida Helene; Pedersen, Rolf B. 2015. Kan tjene stort på dypvannsorganismer.
  • Steen, Ida Helene. 2015. Innslag på "NRK alltid nyheter" om hvordan termostabile enzymer kan brukes i industrien.
  • Steen, Ida Helene; Stokke, Runar. 2015. Bakteriar frå Norskehavet kan gjere fiskeslo om til mat.
  • Steen, Ida Helene. 2013. Jakter superenzymer på havbunnen.
  • Steen, Ida Helene. 2013. Fiskeslo mot halsvondt i framtida.
  • Steen, Ida Helene; Sandnes, Kjartan. 2013. Fiskeslo kan bli medisin.
  • Steen, Ida Helene; Sandnes, Kjartan. 2013. Fiskeslo kan bli medisin.
  • Steen, Ida Helene. 2013. Fiskeslo fikser gørr i halsen.
  • Eijsink, Vincent; Kleivdal, Hans Torstein; Steen, Ida Helene; Nilsen, Jannicke. 2013. ENZYMER I INDUSTRIEN: Jakter superenzymer på havbunnen.
Programme participation
  • Steen, Ida Helene. 2015. Schrødingers katt.
Poster
  • Vester, Jan Kjølhede; Stokke, Runar; Steen, Ida Helene; Blom, Charlotte. 2018. High novelty in secreted amylases from hydrothermal vent field.
  • Jensen, Marianne S; Fredriksen, Lasse; Altermark, Bjørn; Stokke, Runar; Pope, Phillip; Østby, Heidi; Kunath, Benoit Josef; Smalås, Arne O.; Steen, Ida Helene; Vaaje-Kolstad, Gustav; Eijsink, Vincent. 2017. Discovery, characterization and engineering of bacterial thermostable cellulose-degrading enzymes.
  • Larsen, Øivind; Arsin, Hasan; Stokke, Runar; Garcia-Moyano, Antonio; Puntervoll, Pål; Leiros, Ingar; Smalås, Arne O.; Steen, Ida Helene; Bjerga, Gro Elin Kjæreng. 2017. Discovery of proteases for bioconversion of marine biomass.
  • Jensen, Marianne Slang; Fredriksen, Lasse; Altermark, Bjørn; Stokke, Runar; Mackenzie, Alasdair; Pope, Phillip; Kunath, Benoit Josef; Johansen, Joakim; Smalås, Arne O.; Steen, Ida Helene; Vaaje-Kolstad, Gustav; Eijsink, Vincentius Gerardus Henricus. 2017. Bioprospecting of enzymes for processing lignocellulosic biomass.
  • Arsin, Hasan; Bjerga, Gro Elin Kjæreng; Stokke, Runar; Larsen, Øivind; Steen, Ida Helene; Puntervoll, Pål; Kleivdal, Hans Torstein. 2015. Screening proteases for applications on fish industry by-products.
  • Wissuwa, Juliane; Stokke, Runar; Fedøy, Anita-Elin; Altermark, Bjørn; De Santi, Concetta; Lian, Kjersti; de Pascale, Donatella; Smalås, Arne O.; Steen, Ida Helene. 2015. Screening of new α-amylases from deep-sea hydrothermal vents by multiple (meta)-genomic tools.
  • Hocking, William Peter; Roalkvam, Irene; Stokke, Runar; Steen, Ida Helene. 2015. New insights into energy conservation mechanisms in the sulfate respiring archaeon Archaeoglobus fulgidus VC16.
  • Stokke, Runar; Roalkvam, Irene; Steen, Ida Helene. 2015. Metagenomics-based enzyme discovery.
  • Stokke, Runar; Steinsbu, Bjørn Olav; Wissuwa, Juliane; Fedøy, Anita-Elin; Steen, Ida Helene. 2015. Isolation, characterization and genome sequencing of (hyper)thermophiles from the Arctic Mid-Ocean Ridge.
  • Roalkvam, Irene; Stokke, Runar; Drønen, Karine; Steen, Ida Helene; Dahle, Håkon. 2015. Isolation, characterization and genome analysis of a nitrate reducing Arcobacter sp. isolated from injection water.
  • Drønen, Karine; Roalkvam, Irene; Beeder, Janiche; Torsvik, Terje; Steen, Ida Helene; Skauge, Arne; Liengen, Turid. 2015. Heavy nitrate corrosion in anarobe aquifer injection water biofilm: Process modeling.
  • Wissuwa, Juliane; Steen, Ida Helene; Stokke, Runar. 2014. Screening of new alfa-amylases from deep-sea hydrothermal vents by multiple (meta)-genomic tools.
  • Le Moine Bauer, Sven; Steen, Ida Helene; Sandaa, Ruth-Anne; Pedersen, Rolf B.; Dahle, Håkon. 2014. Microbial community changes within a chimney wall at the basalt-hosted Jan Mayen vent field (JMVF):Modeled predictions vs. Pyrosequencing data.
  • Roalkvam, Irene; Drønen, Asbjørg Karine; Stokke, Runar; Steen, Ida Helene. 2014. Isolation, characterization and genome analysis of a nitrate reducing Arcobacter sp. isolated from saline aquifer water.
  • 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.
  • 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.
  • Steen, Ida Helene; Stokke, Runar; Wissuwa, Juliane; Steinsbu, Bjørn Olav; Roalkvam, Irene; Dahle, Håkon; Pedersen, Rolf B. 2014. Exploring the biotechnological potential of microbial communities in the Jan Mayen Vent Fields by use of in situ incubation chambers.
  • Schouw, Anders; Bødtker, Gunhild; Steen, Ida Helene. 2014. Crude oil degradation to methane gas by a waste water consortium.
  • Vander Roost, Jan Pieter; Thorseth, Ingunn Hindenes; Pedersen, Rolf B.; Steen, Ida Helene; Dahle, Håkon. 2014. Comparison of microbial communities within iron-containing mats at different geochemical settings in the Jan Mayen vent field.
  • Abboud, Angele Arlette H.; Stokke, Runar; Steen, Ida Helene; Reuter, Nathalie. 2014. Automated Enzyme Function Inference in Archaea Genomes:comparison of PRIAM and EFICAZ.
  • Bjerga, Gro Elin Kjæreng; Larsen, Øivind; Arsin, Hasan; Stokke, Runar; Puntervoll, Pål; Steen, Ida Helene; Kleivdal, Hans Torstein. 2014. An enzyme discovery and expression pipeline for the conversion of Norwegian biomasses.
  • Drønen, Asbjørg Karine; Steen, Ida Helene; Liengen, Turid; Roalkvam, Irene. 2013. Microbial monitoring of Sub Sea injection water in the North Sea.
  • Steen, Ida Helene; Julianne, Wissuwa; Steinsbu, Bjørn Olav; Roalkvam, Irene; Dahle, Håkon; Pedersen, Rolf B. 2013. Exploring the biotechnological potential of microbial communities in the Jan Mayen Vent Fields by use of in situ incubation chambers.
  • Abboud, Angele Arlette H.; Stokke, Runar; Steen, Ida Helene; Reuter, Nathalie. 2013. Expert system for mining and sifting novel enzyme sequences in metagenomics data.
  • Drønen, Asbjørg Karine; Roalkvam, Irene; Liengen, Turid; Steen, Ida Helene. 2013. Better handling of microbial influenced corrosion during operation.
  • Perevalova, Anna; Steen, Ida Helene; Stokke, Runar; Susanti, Dwi; Bonch- Osmolovskaya, Elizaveta; Mukhopadhyay, Biswarup. 2012. Molecular basis for polysaccharides degradation capabilities of Desulfurococcus fermentans, a hyperthermophilic crenarchaeon.
  • Thorseth, Ingunn Hindenes; Steen, Ida Helene; Eickmann, Benjamin; Dahle, Håkon; Baumberger, Tamara; Peters, M; Strauss, H.; Pedersen, Rolf B. 2012. Microbial mediated formation of low-temperature hydrothermal barite chimneys.
  • Dahle, Håkon; Roalkvam, Irene; Thorseth, Ingunn Hindenes; Pedersen, Rolf B.; Steen, Ida Helene. 2012. Metatranscriptomic and phylogenetic analysis of bacterial mats growing on chimney surfaces at the Loki´s Castle hydrothermal field.
  • Fedøy, Anita-Elin; Leiros, Hanna-Kirsti S.; Steen, Ida Helene; Birkeland, Nils-Kåre. 2012. Bacterial subfamiliy II isocitrate dehydrogenase: adaptations to low and high temperatures.
  • Eickmann, Benjamin; Roalkvam, Irene; Baumberger, Tamara; Dahle, Hakon; Steen, Ida Helene; Thorseth, Ingunn Hindenes; Pedersen, Rolf B. 2012. A combined SEM, isotope, and biomolecular study to unravel the formation of barite chimnneys at the Loki's Castle vent field.
  • Jørgensen, Steffen Leth; Lanzén, Anders; Baumberger, Tamara; Hannisdal, Bjarte; Øvreås, Lise; Pedersen, Rolf-Birger; Flesland, Kristin; Thorseth, Ingunn Hindenes; Steen, Ida Helene; Schleper, Christa Maria. 2011. High resolution community profiling of stratified sediments associated with Loki’s castle vent field at the Knipovitch spreading ridge.
  • Roalkvam, Irene; Chen, Yifeng; Daae, Frida Lise; Hocking, William Peter; Lanzén, Anders; Stokke, Runar; Haflidason, Haflidi; Steen, Ida Helene. 2010. Vertical variations in predominance of Thaumarchaeota and anaerobic methanotrophs in methane seep sediments.
  • Hocking, William Peter; Roalkvam, Irene; Stokke, Runar; Steen, Ida Helene. 2010. Transcriptome analysis of Arhcaeoglobus fulgidus VC-16 grown on differential substrates.
  • Haflidason, Haflidi; Steen, Ida Helene; Roalkvam, Irene; Hocking, William Peter; Hjelstuen, Berit Oline Blihovde; Chen, Yifeng; Daae, Frida Lise. 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.
  • Jørgensen, Steffen Leth; Lanzén, Anders; Baumberger, T; Flesland, Kristin; Thorseth, Ingunn Hindenes; Øvreås, Lise; Pedersen, Rolf-Birger; Steen, Ida Helene; Schleper, Christa Maria. 2010. Microbial diversity in deep-sea sediments Influence of volcanism and hydrothermal activity.
  • Dahle, Håkon; Roalkvam, Irene; Jørgensen, Steffen Leth; Hoem, Solveig; Mitra, Suparna; Huson, Daniel; Tooming-Klunderud, Ave ; Thorseth, Ingunn Hindenes; Pedersen, Rolf-Birger; Steen, Ida Helene. 2010. Microbial community structure of biomats and chimney walls of the Loki’s Castle hydrothermal field at 73°N.
  • Jørgensen, Steffen Leth; Lanzén, Anders; Baumberger, T; Flesland, Kristin; Øvreås, Lise; Pedersen, Rolf-Birger; Steen, Ida Helene; Thorseth, Ingunn Hindenes; Schleper, Christa Maria. 2010. Microbial community composition in the deep-sea sediments flanking the Loki’ castle at the Knipovitch ridge system.
  • Stokke, Runar; Lanzén, Anders; Thorseth, Ingunn Hindenes; Steen, Ida Helene; Øvreås, Lise; Urich, Tim. 2010. Metaproteomic analysis of a chemosynthetic hydrothermal vents community reveals insight into key-metabolic processes.
  • Hoem, Solveig; Dahle, Håkon; Roalkvam, Irene; Thorseth, Ingunn Hindenes; Pedersen, Rolf-Birger; Steen, Ida Helene. 2010. Detection of methanotrophic archaea in a barite chimney at Loki’s Castle, the Arctic Mid-Ocean Ridge.
  • Roalkvam, Irene; Stokke, Runar; Hocking, William Peter; Steen, Ida Helene. 2009. Decreased expression of ATP-sulfurylase and APS-reductase in Archaeoglobus fulgidus during respiration of hydrogen with thiosulfate.
  • Roalkvam, Irene; Stokke, Runar; Fladmark, Kari Espolin; Steen, Ida Helene. 2008. The hyperthermophilic sulfate-reducing archaeon Archaeoglobus fulgidus; a proteomics study on the shift between chemoorganoheterotrophic and chemilithoautotrophic growth.
  • Leiros, Hanna-Kirsti S.; Pey, Angel L.; Innselset, M; Moe, Elin; Leiros, Ingar; Steen, Ida Helene; Martinez, Aurora. 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.
  • Steen, Ida Helene; Fedøy, Anita-Elin; Yang, Nannan; Leiros, Hanna-Kirsti S.; Karlström, Mikael; Ladenstein, Rudolf; Birkeland, Nils-Kåre. 2006. Biochemical characterization and structure analysis of extremophilic isocitrate dehydrogenase.
  • Fedøy, Anita-Elin; Karlstrøm, Mikael; Ladenstein, Rudolf; Birkeland, Nils-Kåre; Steen, Ida Helene. 2006. Biochemical characterization and structure analysis of extremophilic isocitrate dehydrogenase.
  • Fedøy, Anita-Elin; Yang, Nannan; Leiros, Hanna-Kirsti S.; Birkeland, Nils-Kåre; Steen, Ida Helene. 2006. Biochemical and structural basis of cold-adaptation in isocitrate dehydrogenase from Desulfotalea psychrophila.
  • Stokke, Runar; Steen, Ida Helene; Madsen, Marit; Birkeland, Nils-Kåre. 2005. Thermostabilization of Isocitrate Dehydrogenase by Domain Swapping.
  • Fedøy, Anita-Elin; Glærum, Lisbeth; Madsen, Marit Steine; Raae, Arnt Johan; Martinez, Aurora; Birkeland, Nils-Kåre; Steen, Ida Helene. 2005. Molecular adaptations of isocitrate dehydrogenase to extreme temperatures.
  • Stokke, Runar; Steen, Ida Helene; Karlstrom, Mikael; Martinez, Aurora; Ladenstein, Rudolf; Birkeland, Nils-Kåre. 2005. Molecular Adaptation of Isocitrate Dehydrogenase to Extreme Temperatures.
  • Yang, Nannan; Karlsen, Solveig; Steen, Ida Helene; Fedoy, AE; Raae, A.J.; Birkeland, NK; Smalås, Arne Oskar. 2005. 1.75 Å crystal structure of isocitrate dehydrogenase from Desulfotalea psychrophila.
  • Yang, Nannan; Steen, IH; Karlsen, Solveig; Fedoy, AE; Glærum, L; Stokke, R; Madsen, MS; Andersen, OA; Raae, A.J.; Martinez, A; Birkeland, NK; Smalås, Arne Oskar. 2004. Isocitrate dehydrogenases from various organisms: a model system to study structural basis of biological adaptations to extreme temperatures.
  • Yang, N; Steen, Ida Helene; Karlsen, S; Fedøy, Anita-Elin; Glærum, Lisbeth; Stokke, Runar; Madsen, Marit Steine; Andersen, O.A.; Raae, Arnt Johan; Martinez, Aurora; Birkeland, Nils-Kåre; Smalås, A.O. 2004. Isocitrate dehydrogenases from various organisms: a model system to study structural basis of biological adaptations to extreme temperatures.
  • Stokke, Runar; Steen, Ida Helene; Karlstrøm, Mikael; Martinez, Aurora; Ladenstein, Rudolf; Birkeland, Nils-Kåre. 2004. Investigation of factors involved in thermostability of isocitrate dehydrogenase from the hyperthermophilic archaeon Aeropyrum pernix.
  • Steen, Ida Helene; Birkeland, Nils-Kåre; Lien, Torleiv. 1999. <I>Archaeoglobus fulgidus</I> Isocitrate Dehydrogenase, Malate Dehydrogenase and Glutamate Dehydrogenase.
Popular scientific chapter/article
  • Steen, Ida Helene. 2015. Norske varmekilder i dyphavet. 89-95.
Brochure
  • Steen, Ida Helene. 2015. Bioprospecting in the deep sea -CGB Annual report.
  • Steen, Ida Helene. 2014. Novel enzymes - Biodiscovery in marine metagenomes in BTO Calendar 2014.

More information in national current research information system (CRIStin)

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 intitiated and growth followed using geochemical and microbiological methods. The main study area will be the Loki´s Castle vent field.

Current and previous projects:

2019-2023:HyPOD: Hydrothermal Production of Organic molecules: carbon transforamtion 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: 

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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.

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.

Research groups