Hjem
Ida Helene Steens bilde

Ida Helene Steen

Professor
  • E-postIda.Steen@uib.no
  • Telefon+47 55 58 83 75
  • Besøksadresse
    Thormøhlensgt. 53 A/B
  • Postadresse
    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 vent microorganisms?

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

Do they have enzymes useful in biotechnology?

NRKs"Schrödingers Katt" 12.02.2015:

Del 5 "Livet på 3000 meters dyp kan revolusjonere industrien"

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 Archaeoglobus in 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

Vitenskapelig artikkel
  • 2020. Tailoring hydrothermal vent biodiversity towards improved biodiscovery using a novel in-situ enrichment strategy. Frontiers in Microbiology.
  • 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.
  • 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.
  • 2019. Identification and characterization of a hyperthermophilic GH9 cellulase from the Arctic Mid-Ocean Ridge vent field. PLOS ONE.
  • 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.
  • 2018. Water masses and depth structure prokaryotic and T4-like viral communities around hydrothermal systems of the Nordic Seas. Frontiers in Microbiology. 1-17.
  • 2018. Genome analysis of Vallitalea guaymasensis strain L81 isolated from a deep-sea hydrothermal vent system. Microorganisms.
  • 2018. Energy landscapes in hydrothermal chimneys shape distribution of primary producers. Frontiers in Microbiology.
  • 2018. Distribution patterns of iron-oxidizing Zeta- and Beta-Proteobacteria from different environmental settings of the Jan Mayen vent fields. Frontiers in Microbiology.
  • 2018. Decoding the Ocean’s Microbiological Secrets for Marine Enzyme Biodiscovery. FEMS Microbiology Letters.
  • 2017. Determinants and Prediction of Esterase Substrate Promiscuity Patterns. Journal of the American Chemical Society. 225-234.
  • 2017. Complete genome sequence of Lutibacter profoundi LP1T isolatet from an Arctic deep-sea hydrothermal vent system. Standards in Genomic Sciences. 1-11.
  • 2016. The missing link in ABS: The relationship between resource and product. Environmental Policy and Law. 227-237.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 2015. Physiological and genomic characterization of Arcobacter anaerophilus IR-1 reveals new metabolic features in Epsilonproteobacteria. Frontiers in Microbiology.
  • 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.
  • 2015. Functional interactions among filamentous Epsilonproteobacteria and Bacteroidetes in a deep-sea hydrothermal vent biofilm. Environmental Microbiology. 4063-4077.
  • 2015. Energy landscapes shape microbial communities in hydrothermal systems on the Arctic Mid-Ocean Ridge. The ISME Journal. 1593-1606.
  • 2015. Assessment of the carbon monoxide metabolism of the hyperthermophilic sulfate-reducing archaeon Archaeoglobus fulgidus VC-16 by comparative transcriptome analyses. Archaea. 12 sider.
  • 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.
  • 2014. Microbial community structure and functioning in marine sediments associated with diffuse hydrothermal venting assessed by integrated meta-omics. Environmental Microbiology. 2699-2710.
  • 2014. Identification of key components in the energy metabolism of Archaeoglobus fulgidus by transcriptome analyses. Frontiers in Microbiology.
  • 2013. The versatile in situ gene expression of an Epsilonproteobacteria-dominated biofilm from a hydrothermal chimney. Environmental Microbiology Reports. 282-290.
  • 2013. Complete genome sequence of the thermophilic and facultatively chemolithoautotrophic sulfate reducer Archaeoglobus sulfaticallidus PM70-1T. Microbiology Resource Announcements (MRA).
  • 2012. The complex structures of isocitrate dehydrogenase from Clostridium thermocellum and Desulfotalea psychrophila support a new active site locking mechanism. FEBS Open Bio.
  • 2012. Integrated metagenomic and metaproteomic analyses of an ANME-1-dominated community in marine cold seep sediments. Environmental Microbiology. 1333-1346.
  • 2012. Fine-scale community structure analysis of ANME in Nyegga sediments with high and low methane flux. Frontiers in Microbiology. 1-13.
  • 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 sider.
  • 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.
  • 2011. New insight into stratification of anaerobic methanotrophs in cold seep sediments. FEMS Microbiology Ecology. 233-243.
  • 2010. Thermodynamic and kinetic stability of a large multi-domain enzyme from the hyperthermophile Aeropyrum pernix. Extremophiles. 213-223.
  • 2008. The phylogeny of the aromatic amino acid hydroxylases revisited by characterizing phenylalanine hydroxylase from Dictyostelium discoideum. Gene. 86-92.
  • 2007. Thermal stability of isocitrate dehydrogenase from Archaeoglobus fulgidus studied by crystal structure analysis and engineering of chimers. Extremophiles.
  • 2007. Thermal stability and biochemical properties of isocitrate dehydrogenase from the thermoacidophilic archaeon Thermoplasma acidophilum. Extremophiles. 397-402.
  • 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.
  • 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 (JMB). 130-149.
  • 2007. Biochemical characterization of isocitrate dehydrogenase from Methylococcus capsulatus reveals a unique NAD(+)-dependent homotetrameric enzyme. Archives of Microbiology.
  • 2006. The crystal structure of a hyperthermostable subfamily II isocitrate dehydrogenase from Thermotoga maritima. The FEBS Journal. 2851-2868.
  • 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 (JMB). 559-577.
  • 2002. Identification of cofactor discrimination siten in NAD-isocitrate dehydrogenase from Pyrococcus furious. Archives of Microbiology. 297-300.
  • 2001. Differences in the oligomeric state of the LDH-like L-MalDH from the hyperthermophilic archaea Methanococcus jannaschii and Archaeoglobus fulgidus. Biochemistry. 10310-10316.
  • 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.
  • 2001. Archaeoglobus fulgidus isocitrate dehydrogenase, malate dehydrogenase and glutamate dehydrogenase. Methods in Enzymology. 13-26.
  • 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.
  • 1998. Desulfobulbus rhabdoformis sp. nov., a sulfate reducer from a water-oil separation system. International Journal of Systematic Bacteriology. 469-474.
  • 1997. Purification and properties of an extremely thermostable NADP-specific glutamate dehydrogenase from Archaeoglobus fulgidus. Archives of Microbiology. 536-539.
  • 1997. Properties and primary structure of a thermostable L-malate dehydrogenase from Archaeoglobus fulgidus. Archives of Microbiology. 59-67.
  • 1997. Biochemical and phylogenetic characterization of isocitrate dehydrogenase from a hyperthermophilic archaeon, Archaeoglobus fulgidus. Archives of Microbiology. 412-420.
Rapport
  • 2015. Arctic Mid-Ocean Ridge, NORMAR/CGB 2015 Test Cruise, R/V G.O.SARS, Senter for Geobiologi. .
Faglig foredrag
  • 2020. A perspective from Bergen: Deep Ocean bioprospecting, metagenomics and public databases.
  • 2019. Summary of research activities WP1 - Environmental sampling.
  • 2019. Marine bioprospecting.
  • 2018. Forskningsaktiviteter og infrastruktur ved KG Jebsen Senter for Dyphavsforskning og Havlaboratoriet.
  • 2018. Biodiscovery and bioprospecting activities at KG Jebsen Centre for Deep-Sea Research.
  • 2017. Value chains and innovation of life in deep-sea hydrothermal vents - the InMare and Virus-X projects.
  • 2017. The Virus-X project.
  • 2017. Marine bioprospecting activities at KG Jebsen Centre for Deep Sea Research.
  • 2017. Black smokers-Extreme life conditions and applications.
  • 2015. The value of biodiversity.
  • 2015. Exploitation of genetic resources from the Arctic mid-ocean ridge vent fields in the norwegian industry.
  • 2015. An enzyme discovery and expression pipeline for the conversion of marine biomasses.
  • 2014. Towards a framework for analyses of how energy landscapes shape microbial communities in deep-sea hydrothermal systems.
  • 2014. Metagenomic study of a filamentous microbial mat from the Loki´s Castle Vent Field.
  • 2014. Biotechnology at GeoBIO-SFF.
Populærvitenskapelig foredrag
  • 2019. Separasjon av enzymer for bruk i bioteknologi.
  • 2019. Microbial life in deep-sea hydrothermal vent systems.
  • 2017. Et innovasjonsdykk i dyphavet.
  • 2017. Erfaring med InMare.
  • 2016. Marin Bioprospektering.
  • 2014. Mikrobielt liv i ekstreme miljø.
  • 2013. Diversitet, funksjon og bioteknologisk anvendelse av mikroorganimser i dyp-marine varme kilder.
  • 2012. Microbial life in the Arctic Mid-Ocean Vent Fields.
  • 1997. Isocitrate dehydrogenase from the sulfate reducers Archaeoglobus fulgidus and Desulfobacter vibrioformis.
Vitenskapelig foredrag
  • 2018. Biodiscovery and bioprospecting of Norwegian deep-sea hydrothermal vent systems.
  • 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 .
  • 2017. Bioprospecting of enzymes for processing lignocellulosic biomass.
  • 2016. Biodiscovery and bioprospecting of molecules from deep-sea organisms.
  • 2015. Isolation, characterization and genome analysis of a nitrate reducing Arcobacter sp. isolated from saline aquifer water.
  • 2015. Isolation and characterization of a novel syntrophic alkane degrading bacterium from the Loki's castle hydrothermal vent field.
  • 2015. Exploitation of genetic resources from the Arctic mid-ocean ridge vent fields in the norwegian industry.
  • 2015. Capturing of microbial dark matter in deep sea hydrothermal vents by using in situ colonizers.
  • 2014. Use of metatranscriptomics, amplicon pyrosequencing and thermodynamics to assess how microbial communities are shaped by energy availability.
  • 2014. Microbial communities associated with low-temperature venting barite chimneys in the Loki´s Castle black smoker field.
  • 2014. Microbial communities associated with low-temparture venting barite chimneys in the Loki´s Castle black smoker field.
  • 2014. Energy landscapes shape microbial communities and the distribution of biosignatures in hydrothermal systems on the Arctic Mid-Ocean Ridge.
  • 2014. Correlating abundances of archaeal lineages and geochemical parameters in deep-sea marine sediments.
  • 2013. Thermodynamic constraints on the microbial ecology and biogeochemical cycling in deep-sea hydrothermal systems.
  • 2013. Microbial life in the Arctic Mid-Ocean Vent Fields.
  • 2013. Hvordan oppdage nye enzymer?
  • 2013. Formation of barite chimneys at low-temperature hydrothermal venting: evidence for complex geobio-interactions.
  • 2013. Exposure the biotechnological potential in microbial communities at the Arctic Mid-Ocean Ridge Vent Fields.
  • 2013. Correlating microbial community structure with geochemical data in sediments from the Arctic Mid-Ocean Ridge.
  • 2013. Assessment of the biotechnological potential of AMOR:(meta)genomics, protein expression and characterisation.
  • 2012. Metagenomics of arctic hydrothermal vent biofilms.
  • 2012. Metagenomics at arctic deep-sea hydrothermal vent systems.
  • 2012. Exploring Metagenomes.
  • 2012. Correlating geochemical data with microbial community structure in highly stratified sediments from the Arctic mid-ocean ridge.
  • 2011. Microbial processes and biomineralisation associated with low-temperature venting and formation of barite chimneys at Loki's Castle hydrothermal field.
  • 2010. Microbial life associated with low-temperature hydrothermal venting and formation of barite chimneys at Loki’s Castle vent field.
  • 2010. Microbial communities in cold seeps, Nyegga, Mid-Norwegian shelf.
  • 2010. Metaproteomic Analysis of a Chemosynthetic Hydrothermal Vent Community Reveals Insights into Key-Metabolic Processes.
  • 2010. Investigations of a novel fauna from hydrothermal vents along the Arctic Mid-Ocean Ridge (AMOR).
  • 2010. Geobiology of hydrothermal vent fields in the Norwegian-Greenland Sea.
  • 2010. Anaerobic methanotrophs - from cold seeps to hot vents.
  • 2010. A variety of microbial mats cover the chimney walls of the Loki's Castle hydrothermal field.
  • 2009. The extreme environments of the active seafloor seep pockmarks at Nyegga, the upper Mid-Norwegian margin: a multidisciplinary geological, biological and geochemical study.
  • 2009. The extreme environment of active gas hydrate bearing pockmarks at Nyegga: a multidisciplinary geological, biological and geochemical study on the Mid-Norwegian margin.
  • 2008. A cold-active enzyme with an unusual high thermal stability: Isocitrate dehydrogenase from the psychrophilic bacterium Desulfotalea psychrophila.
  • 2004. Molecular adaptation of isocitrate dehydrogenase to high temperature.
  • 2000. Isocitrate dehydrogenase from Aeropyrum pernix.
  • 1996. Purification and characterization of glutamate dehydrogenase from the thermophilic archaea Archaeoglobus fulgidus strain 7324.
  • 1996. L-Malate dehydrogenase from the hyperthermophilic archaeon Archaeoglobus fulgidus.
  • 1996. Expression of a thermostable isocitrate dehydrogenase from the hyperthermophilic Archaeoglobus fulgidus in Escherichia coli.
  • 1996. Expression of a thermostable isocitrate dehydrogenase from the hyperthermophilic Archaeoglobus fulgidus in Escherichia coli.
  • 1996. Archaeoglobus fulgidus isocitrate dehydrogenase: Purification, characterization, thermostability, genetic analysis and phylogeny.
  • 1996. Archaeoglobus fulgidus isocitrate dehydrogenase: Purification, characterization, thermostability genetic analysis and phylogeny.
Populærvitenskapelig artikkel
  • 2016. Norske varmekilder i dyphavet - en underfundig verden full av spennende livsformer. Årbok for Universitetsmuseet i Bergen.
Kronikk
  • 2016. Et hav av bakterier er et hav av muligheter. Bergens Tidende.
Doktorgradsavhandling
  • 2018. Isolation and genome analysis of Vallitalea guaymasensis L81; energy metabolism, syntrophy and applications.
  • 2016. The Arctic Mid-Ocean Ridge Vent Fields - A valuable Resource for Marine Bioprospecting?
  • 2015. Energy conservation mechanisms in the sulfate respiring archaeon Archaeoglobus fulgidus VC16 - assessed by transcriptome profiling and comparative genomics.
  • 2013. Linking microbial community structures and geochemistry in deep-sea sediments & pursuing the link between identity and function.
  • 2012. Diversity, stratification and in situ metabolism of anaerobic methanotrophic archaea in Nyegga cold seeps.
  • 2006. Isocitrate dehydrogenase from extremophiles; Molecular adaptations to high temperatures.
  • 1998. Isocitrate dehydrogenase from the sulfate reducers Archaeoglobus fulgidus and Desulfobacter vibrioformis:Properties, Primary structure, and Phylogeny.
Intervju
  • 2015. Researchers to trawl ocean for new biotechnology Resources.
  • 2015. Organismer i havet kan være en gullgruve.
  • 2015. Kan tjene stort på dypvannsorganismer.
  • 2015. Innslag på "NRK alltid nyheter" om hvordan termostabile enzymer kan brukes i industrien.
  • 2015. Bakteriar frå Norskehavet kan gjere fiskeslo om til mat.
  • 2013. Jakter superenzymer på havbunnen.
  • 2013. Fiskeslo mot halsvondt i framtida.
  • 2013. Fiskeslo kan bli medisin.
  • 2013. Fiskeslo kan bli medisin.
  • 2013. Fiskeslo fikser gørr i halsen.
  • 2013. ENZYMER I INDUSTRIEN: Jakter superenzymer på havbunnen.
Programdeltagelse
  • 2015. Schrødingers katt.
Museumsutstilling
  • 2019. Kan mikroorganismer i dyphavet gjøre avfall om til mat?
Poster
  • 2020. Enzyme discovery from the edge of (sequence) space.
  • 2020. Bringing deep-sea enzymes to light.
  • 2018. High novelty in secreted amylases from hydrothermal vent field.
  • 2017. Discovery, characterization and engineering of bacterial thermostable cellulose-degrading enzymes.
  • 2017. Discovery of proteases for bioconversion of marine biomass.
  • 2017. Bioprospecting of enzymes for processing lignocellulosic biomass.
  • 2015. Screening proteases for applications on fish industry by-products.
  • 2015. Screening of new α-amylases from deep-sea hydrothermal vents by multiple (meta)-genomic tools.
  • 2015. New insights into energy conservation mechanisms in the sulfate respiring archaeon Archaeoglobus fulgidus VC16.
  • 2015. Metagenomics-based enzyme discovery.
  • 2015. Isolation, characterization and genome sequencing of (hyper)thermophiles from the Arctic Mid-Ocean Ridge.
  • 2015. Isolation, characterization and genome analysis of a nitrate reducing Arcobacter sp. isolated from injection water.
  • 2015. Heavy nitrate corrosion in anarobe aquifer injection water biofilm: Process modeling.
  • 2014. Screening of new alfa-amylases from deep-sea hydrothermal vents by multiple (meta)-genomic tools.
  • 2014. Microbial community changes within a chimney wall at the basalt-hosted Jan Mayen vent field (JMVF):Modeled predictions vs. Pyrosequencing data.
  • 2014. Isolation, characterization and genome analysis of a nitrate reducing Arcobacter sp. isolated from saline aquifer water.
  • 2014. Genomic sequencing analysis of a new thermophilic starch degrading Geobacillus sp. isolate from AMOR hydrothermal vent system.
  • 2014. Genomic sequencing analysis of a new thermophilic starch degrading Geobacilllus sp. isolate from AMOR hydrothermal vent system.
  • 2014. Exploring the biotechnological potential of microbial communities in the Jan Mayen Vent Fields by use of in situ incubation chambers.
  • 2014. Crude oil degradation to methane gas by a waste water consortium.
  • 2014. Comparison of microbial communities within iron-containing mats at different geochemical settings in the Jan Mayen vent field.
  • 2014. Automated Enzyme Function Inference in Archaea Genomes:comparison of PRIAM and EFICAZ.
  • 2014. An enzyme discovery and expression pipeline for the conversion of Norwegian biomasses.
  • 2013. Microbial monitoring of Sub Sea injection water in the North Sea.
  • 2013. Exploring the biotechnological potential of microbial communities in the Jan Mayen Vent Fields by use of in situ incubation chambers.
  • 2013. Expert system for mining and sifting novel enzyme sequences in metagenomics data.
  • 2013. Better handling of microbial influenced corrosion during operation.
  • 2012. Molecular basis for polysaccharides degradation capabilities of Desulfurococcus fermentans, a hyperthermophilic crenarchaeon.
  • 2012. Microbial mediated formation of low-temperature hydrothermal barite chimneys.
  • 2012. Metatranscriptomic and phylogenetic analysis of bacterial mats growing on chimney surfaces at the Loki´s Castle hydrothermal field.
  • 2012. Bacterial subfamiliy II isocitrate dehydrogenase: adaptations to low and high temperatures.
  • 2012. A combined SEM, isotope, and biomolecular study to unravel the formation of barite chimnneys at the Loki's Castle vent field.
  • 2011. High resolution community profiling of stratified sediments associated with Loki’s castle vent field at the Knipovitch spreading ridge.
  • 2010. Vertical variations in predominance of Thaumarchaeota and anaerobic methanotrophs in methane seep sediments.
  • 2010. Transcriptome analysis of Arhcaeoglobus fulgidus VC-16 grown on differential substrates.
  • 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.
  • 2010. Microbial diversity in deep-sea sediments Influence of volcanism and hydrothermal activity.
  • 2010. Microbial community structure of biomats and chimney walls of the Loki’s Castle hydrothermal field at 73°N.
  • 2010. Microbial community composition in the deep-sea sediments flanking the Loki’ castle at the Knipovitch ridge system.
  • 2010. Metaproteomic analysis of a chemosynthetic hydrothermal vents community reveals insight into key-metabolic processes.
  • 2010. Detection of methanotrophic archaea in a barite chimney at Loki’s Castle, the Arctic Mid-Ocean Ridge.
  • 2009. Decreased expression of ATP-sulfurylase and APS-reductase in Archaeoglobus fulgidus during respiration of hydrogen with thiosulfate.
  • 2008. The hyperthermophilic sulfate-reducing archaeon Archaeoglobus fulgidus; a proteomics study on the shift between chemoorganoheterotrophic and chemilithoautotrophic growth.
  • 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.
  • 2006. Biochemical characterization and structure analysis of extremophilic isocitrate dehydrogenase.
  • 2006. Biochemical characterization and structure analysis of extremophilic isocitrate dehydrogenase.
  • 2006. Biochemical and structural basis of cold-adaptation in isocitrate dehydrogenase from Desulfotalea psychrophila.
  • 2005. Thermostabilization of Isocitrate Dehydrogenase by Domain Swapping.
  • 2005. Molecular adaptations of isocitrate dehydrogenase to extreme temperatures.
  • 2005. Molecular Adaptation of Isocitrate Dehydrogenase to Extreme Temperatures.
  • 2005. 1.75 Å crystal structure of isocitrate dehydrogenase from Desulfotalea psychrophila.
  • 2004. Isocitrate dehydrogenases from various organisms: a model system to study structural basis of biological adaptations to extreme temperatures.
  • 2004. Isocitrate dehydrogenases from various organisms: a model system to study structural basis of biological adaptations to extreme temperatures.
  • 2004. Investigation of factors involved in thermostability of isocitrate dehydrogenase from the hyperthermophilic archaeon Aeropyrum pernix.
  • 1999. <I>Archaeoglobus fulgidus</I> Isocitrate Dehydrogenase, Malate Dehydrogenase and Glutamate Dehydrogenase.
Populærvitenskapelig kapittel/artikkel
  • 2015. Norske varmekilder i dyphavet. 89-95.
Brosjyre
  • 2015. Bioprospecting in the deep sea -CGB Annual report.
  • 2014. Novel enzymes - Biodiscovery in marine metagenomes in BTO Calendar 2014.

Se fullstendig oversikt over publikasjoner i 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 intitated 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: 

2015-2018INMARE: 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.

2012-2017NorZymeD: 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 biogoldminethrough 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.

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