Erik Hjerde.jpg
Photo: UiT
Erik Hjerde.jpg
Department of Chemistry +4777623372 Tromsø FPARK G 114

Hjerde, Erik

Research scientist, Molecular Biosystems and Bioinformatics, Norstruct

Job description

Assoiated with the european ELIXIR project. In Norway, the project is coordinated by the University of Bergen and includes the Universities in Oslo, Trondheim, Tromsø and Ås. On a national level we aim to:

  • to build a Norwegian Node in the pan-European research infrastructure ELIXIR (, with the Node delivering services and resources to the international community through ELIXIR on selected areas;
  • to continue a National help desk serving users a broader set of services and assistance; and
  • to provide an e-infrastructure allowing users to efficiently and safely store, share, analyse and publish their genomics scale data.

  • Maharajan, Amudha Deepalakshmi; Hjerde, Erik; Hansen, Hilde; Willassen, Nils P. Quorum Sensing Controls the CRISPR and Type VI Secretion Systems in Aliivibrio wodanis 06/09/139. Frontiers in Veterinary Science 2022. ISSN 2297-1769.s doi: 10.3389/fvets.2022.799414.
  • Sanabria-Moreno, Adriana Maria; James Peter, Jessin Janice; Hjerde, Erik; Simonsen, Gunnar Skov; Hanssen, Anne Merethe. Shotgun-metagenomics based prediction of antibiotic resistance and virulence determinants in Staphylococcus aureus from periprosthetic tissue on blood culture bottles. Scientific Reports 2021. ISSN 2045-2322.s doi: 10.1038/s41598-021-00383-7.
  • Lunde, Tracy Munthali; Hjerde, Erik; Al-Haroni, Mohammed. Prevalence, diversity and transferability of the Tn916-Tn1545 family ICE in oral streptococci. Journal of Oral Microbiology 2021; Volum 13 (1). ISSN 2000-2297.s 1 - 12.s doi: 10.1080/20002297.2021.1896874.
  • Sanabria-Moreno, Adriana Maria; Hjerde, Erik; Johannessen, Mona; Sollid, Johanna U Ericson; Simonsen, Gunnar Skov; Hanssen, Anne Merethe. Shotgun-Metagenomics on Positive Blood Culture Bottles Inoculated With Prosthetic Joint Tissue: A Proof of Concept Study. Frontiers in Microbiology 2020. ISSN 1664-302X.s doi: 10.3389/fmicb.2020.01687.
  • Goll, Rasmus; Johnsen, Peter Holger; Hjerde, Erik; Diab, Joseph; Valle, Per Christian; Hilpüsch, Frank; Cavanagh, Jorunn Pauline. Effects of fecal microbiota transplantation in subjects with irritable bowel syndrome are mirrored by changes in gut microbiome. Gut microbes 2020; Volum 12:e1794263 (1). ISSN 1949-0976.s 1 - 15.s doi: 10.1080/19490976.2020.1794263.
  • Khider, Miriam; Hjerde, Erik; Hansen, Hilde; Willassen, Nils Peder. Differential expression profiling of ΔlitR and ΔrpoQ mutants reveals insight into QS regulation of motility, adhesion and biofilm formation in Aliivibrio salmonicida. BMC Genomics 2019; Volum 20. ISSN 1471-2164.s 1 - 18.s doi: 10.1186/s12864-019-5594-4.
  • Le Doujet, Typhaine; De Santi, Concetta; Klemetsen, Terje; Hjerde, Erik; Willassen, Nils Peder; Haugen, Peik. Closely-related Photobacterium strains comprise the majority of bacteria in the gut of migrating Atlantic cod (Gadus morhua). Microbiome 2019; Volum 7. ISSN 2049-2618.s doi: 10.1186/s40168-019-0681-y.
  • Khider, Miriam; Hansen, Hilde; Hjerde, Erik; Johansen, Jostein a; Willassen, Nils Peder. Exploring the transcriptome of luxI- and ΔainS mutants and the impact of N-3-oxo-hexanoyl-L- and N-3-hydroxy- decanoyl-L-homoserine lactones on biofilm formation in Aliivibrio salmonicida. PeerJ 2019; Volum 2019. ISSN 2167-8359.s doi: 10.7717/peerj.6845.
  • Flygel, Trym Thune; Sovershaeva, Evgeniya; Classen-Weitz, Shantelle; Hjerde, Erik; Mwaikono, Kilaza S.; Odland, Jon Øyvind; Ferrand, Rashida A.; McHugh, Grace; Gutteberg, Tore Jarl; Nicol, Mark P.; Cavanagh, Jorunn Pauline; Flægstad, Trond. Composition of Gut Microbiota of Children and Adolescents With Perinatal Human Immunodeficiency Virus Infection Taking Antiretroviral Therapy in Zimbabwe. Journal of Infectious Diseases 2019. ISSN 0022-1899.s 1 - 10.s doi: 10.1093/infdis/jiz473.
  • Pain, Maria; Hjerde, Erik; Klingenberg, Claus; Cavanagh, Jorunn Pauline. Comparative Genomic Analysis of Staphylococcus haemolyticus Reveals Key to Hospital Adaptation and Pathogenicity. Frontiers in Microbiology 2019; Volum 10. ISSN 1664-302X.s doi: 10.3389/fmicb.2019.02096.
  • Johansson Söderberg, Jenny; Grgic, Miriam; Hjerde, Erik; Haugen, Peik. Aliivibrio wodanis as a production host: development of genetic tools for expression of cold-active enzymes. Microbial Cell Factories 2019; Volum 18. ISSN 1475-2859.s doi: 10.1186/s12934-019-1247-1.
  • Esaiassen, Eirin; Hjerde, Erik; Cavanagh, Jorunn Pauline; Pedersen, Tanja; Andresen, Jannicke Hanne; Rettedal, Siren; Støen, Ragnhild; Nakstad, Britt; Willassen, Nils Peder; Klingenberg, Claus. Effects of Probiotic Supplementation on the Gut Microbiota and Antibiotic Resistome Development in Preterm Infants. Frontiers in pediatrics 2018; Volum 6 (November 2018). ISSN 2296-2360.s doi: 10.3389/fped.2018.00347.
  • Vimberg, Vladimir; Cavanagh, Jorunn Pauline; Benada, Oldrich; Kofranova, Olga; Hjerde, Erik; Zieglerova, Leona; Balikova Novotna, Gabriela. Teicoplanin resistance in Staphylococcus haemolyticus is associated with mutations in histidine kinases VraS and WalK. Diagnostic microbiology and infectious disease 2018; Volum 90 (3). ISSN 0732-8893.s 233 - 240.s doi: 10.1016/j.diagmicrobio.2017.11.007.
  • Tekle, Kidane M; Gundersen, Sveinung; Klepper, Kjetil; Bongo, Lars Ailo; Raknes, Inge Alexander; Li, Xiaxi; Zhang, Wei; Andreetta, Christian; Mulugeta, Teshome Dagne; Kalaš, Matúš; Rye, Morten Beck; Hjerde, Erik; Antony Samy, Jeevan Karloss; Fornous, Ghislain; Azab, Abdulrahman; Våge, Dag Inge; Hovig, Eivind; Willassen, Nils Peder; Drabløs, Finn; Nygård, Ståle; Petersen, Kjell; Jonassen, Inge. Norwegian e-Infrastructure for Life Sciences (NeLS). F1000 Research 2018; Volum 7:968. ISSN 2046-1402.s doi: 10.5256/f1000research.16472.r35600.
  • Dominguez Del Angel, Victoria; Hjerde, Erik; Sterck, Lieven; Capella-Gutiérrez, Salvador; Notredame, Cederic; Vinnere Pettersson, Olga; Amselem, Joelle; Bouri, Laurent; Bocs, Stephanie; Klopp, Christophe; Gibrat, Jean-Francois; Vlasova, Anna V; Leskosek, Brane L; Soler, Lucile; Binzer-Panchal, Mahesh; Lantz, Henrik. Ten steps to get started in Genome Assembly and Annotation. F1000 2018; Volum 7. ISSN 1759-796X.s doi: 10.12688/f1000research.13598.1.
  • Casabona, M. Guillermina; Kneuper, Holger; de Lima, Daniela Alferes; Harkins, Catriona P.; Zoltner, Martin; Hjerde, Erik; Holden, Matthew T. G.; Palmer, Tracy. Haem-iron plays a key role in the regulation of the ess/type VII secretion system of staphylococcus aureus RN6390. Microbiology (Reading) 2017; Volum 163 (12). ISSN 1350-0872.s 1839 - 1850.s doi: 10.1099/mic.0.000579.
  • Karlsen, Christian; Hjerde, Erik; Klemetsen, Terje; Willassen, Nils Peder. Pan genome and CRISPR analyses of the bacterial fish pathogen Moritella viscosa. BMC Genomics 2017; Volum 18:313. ISSN 1471-2164.s doi: 10.1186/s12864-017-3693-7.
  • Esaiassen, Eirin; Hjerde, Erik; Cavanagh, Jorunn Pauline; Simonsen, Gunnar Skov; Klingenberg, Claus. Bifidobacterium bacteremia: Clinical characteristics and a genomic approach to assess pathogenicity. Journal of Clinical Microbiology 2017; Volum 55 (7). ISSN 0095-1137.s 2234 - 2248.s doi: 10.1128/JCM.00150-17.
  • Thode, Sunniva Katharina; Bækkedal, Cecilie; Johansson Söderberg, Jenny; Hjerde, Erik; Hansen, Hilde; Haugen, Peik. Construction of a fur null mutant and RNA-sequencing provide deeper global understanding of the Aliivibrio salmonicida Fur regulon. PeerJ 2017. ISSN 2167-8359.s 1 - 24.s doi: 10.7717/peerj.3461.
  • Williamson, Adele Kim; Hjerde, Erik; Kahlke, Tim. Analysis of the distribution and evolution of the ATP-dependent DNA ligases of bacteria delineates a distinct phylogenetic group 'Lig E'. Molecular Microbiology 2016; Volum 99 (2). ISSN 0950-382X.s 274 - 290.s doi: 10.1111/mmi.13229.
  • Williamson, Adele Kim; De Santi, Concetta; Altermark, Bjørn; Karlsen, Christian; Hjerde, Erik. Complete genome sequence of Halomonas sp. R5-57. Standards in Genomic Sciences 2016; Volum 11:62. ISSN 1944-3277.s 1 - 9.s doi: 10.1186/s40793-016-0192-4.
  • Hjerde, Erik; Karlsen, Christian; Sørum, Henning; Parkhill, Julian; Willassen, Nils Peder; Thomson, Nicholas R.. Co-cultivation and transcriptome sequencing of two co-existing fish pathogens Moritella viscosa and Aliivibrio wodanis. BMC Genomics 2015; Volum 16 (447). ISSN 1471-2164.s 1 - 13.s doi: 10.1186/s12864-015-1669-z.
  • Holm, Kåre Olav; Nilsson, Kristina; Hjerde, Erik; Willassen, Nils Peder; Milton, Debra L. Complete genome sequence of Vibrio anguillarum strain NB10, a virulent isolate from the Gulf of Bothnia. Standards in Genomic Sciences 2015; Volum 10 (60). ISSN 1944-3277.s doi: 10.1186/s40793-015-0060-7.
  • Kashulin, Alexander; Sørum, Henning; Hjerde, Erik; Willassen, Nils Peder. IS elements in Aliivibrio salmonicida LFI1238: Occurrence, variability and impact on adaptability. Gene 2015; Volum 554 (1). ISSN 0378-1119.s 40 - 49.s doi: 10.1016/j.gene.2014.10.019.
  • Cavanagh, Jorunn Pauline; Hjerde, Erik; Holden, Matthew T.G.; Kahlke, Tim; Klingenberg, Claus; Flægstad, Trond; Parkhill, J; Bentley, Stephen D; Sollid, Johanna U Ericson. Whole-genome sequencing reveals clonal expansion of multiresistant Staphylococcus heamolyticus in European hopsitals. Journal of Antimicrobial Chemotherapy 2014; Volum 69 (11). ISSN 0305-7453.s 2920 - 2927.s doi: 10.1093/jac/dku271.
  • Bjerga, Gro Elin Kjæreng; Hjerde, Erik; De Santi, Concetta; Williamson, Adele Kim; Smalås, Arne O.; Willassen, Nils Peder; Altermark, Bjørn. High quality draft genome sequence of Streptomyces sp. strain AW19M42 isolated from a sea squirt in Northern Norway. Standards in Genomic Sciences 2014; Volum 9 (3). ISSN 1944-3277.s doi: 10.4056/sigs.5038901.
  • Hjerde, Erik; Pierechod, Marcin Miroslaw; Williamson, Adele Kim; Bjerga, Gro Elin Kjæreng; Willassen, Nils Peder; Smalås, Arne O.; Altermark, Bjørn. Draft Genome Sequence of the Actinomycete Rhodococcus sp. Strain AW25M09, Isolated from the Hadsel Fjord, Northern Norway. Microbiology Resource Announcements (MRA) 2013; Volum 1 (2). ISSN 2169-8287.s doi: 10.1128/genomeA.00055-13.
  • Bjørkeng, Eva katrin; Hjerde, Erik; Pedersen, Torunn; Sundsfjord, Arnfinn; Hegstad, Kristin. ICESluvan, a 94-Kilobase Mosaic Integrative Conjugative Element Conferring Interspecies Transfer of VanB-Type Glycopeptide Resistance, a Novel Bacitracin Resistance Locus, and a ToxinAntitoxin Stabilization System. Journal of Bacteriology 2013; Volum 195 (23). ISSN 0021-9193.s 5381 - 5390.s doi: 10.1128/JB.02165-12.
  • Ahmad, Rafi; Hansen, Geir Åsmund; Hansen, Hilde; Hjerde, Erik; Pedersen, hege lynum; Paulsen, steinar; Nyrud, May Liss Julianne; Strauss, Anja; Willassen, Nils Peder; Haugen, Peik. Prediction, microarray and northern blot analyses identify new intergenic small RNAs in aliivibrio salmonicida. Journal of Molecular Microbiology and Biotechnology 2012; Volum 22 (6). ISSN 1464-1801.s 352 - 360.s doi: 10.1159/000345769.
  • Hansen, Geir Åsmund; Ahmad, Rafi; Hjerde, erik; Fenton, Christopher Graham; Willassen, Nils Peder; Haugen, Peik. Expression profiling reveals Spot 42 small RNA as a key regulator in the central metabolism of Aliivibrio salmonicida. BMC Genomics 2012; Volum 13. ISSN 1471-2164.s doi: 10.1186/1471-2164-13-37.
  • Bjornsdottir, Bryndis; Hjerde, Erik; Bragason, Birkir Th.; Gudmundsdottir, Thorunn; Willassen, Nils Peder; Gudmundsdottir, Bjarnheidur. Identification of type VI secretion systems in Moritella viscosa. Veterinary Microbiology 2012; Volum 158 (3-4). ISSN 0378-1135.s 436 - 442.s doi: 10.1016/j.vetmic.2012.02.030.
  • Lindell, Kristoffer; Fahlgren, Anna; Hjerde, Erik; Willassen, Nils Peder; Fällman, Maria; Milton, Debra L. Lipopolysaccharide O-Antigen Prevents Phagocytosis of Vibrio anguillarum by Rainbow Trout (Oncorhynchus mykiss) Skin Epithelial Cells. PLOS ONE 2012; Volum 7 (5). ISSN 1932-6203.s doi: 10.1371/journal.pone.0037678.
  • Kahlke, Tim; Goesmann, Alexander; Hjerde, Erik; Willassen, Nils Peder; Haugen, Peik. Unique core genomes of the bacterial family vibrionaceae: insights into niche adaptation and speciation. BMC Genomics 2012; Volum 13. ISSN 1471-2164.s doi: 10.1186/1471-2164-13-179.
  • Weber, Barbara; Lindell, Kristoffer; El Qaidi, Samir; Hjerde, erik; Willassen, Nils P; Milton, Debra L. The phosphotransferase VanU represses expression of four qrr genes antagonizing VanO-mediated quorum-sensing regulation in Vibrio anguillarum. Microbiology (Reading) 2011; Volum 157. ISSN 1350-0872.s 3324 - 3339.s doi: 10.1099/mic.0.051011-0.
  • Pedersen, hege lynum; Hjerde, erik; Paulsen, steinar; Hansen, Hilde; Olsen, Lotte; Thode, Sunniva Katharina; Dos Santos, Marcos Tadeu; Paulssen, Ruth H; Willassen, Nils P; Haugen, Peik. Global responses of Aliivibrio salmonicida to hydrogen peroxide as revealed by microarray analysis. Marine Genomics 2010; Volum 3. ISSN 1874-7787.s 193 - 200.s doi: 10.1016/j.margen.2010.10.002.
  • Ahmad, Rafi; Hjerde, erik; Hansen, Geir Åsmund; Haugen, Peik; Willassen, Nils Peder. Prediction and Experimental Testing of Ferric Uptake Regulator Regulons in Vibrios. Journal of Molecular Microbiology and Biotechnology 2009; Volum 16 (3-4). ISSN 1464-1801.s 159 - 168.s doi: 10.1159/000128322.
  • Hjerde, erik; Lorentzen, marit sjo; Holden, MT; Seeger, K; Paulsen, steinar; Bason, N; Churcher, C; Harris, D; Norbertczak, H; Quail, MA; Sanders, S; Thurston, S; Parkhill, J; Willassen, Nils Peder; Thomson, NR. The Genome Sequence Of The Fish Pathogen Aliivibrio salmonicida Strain LFI1238 shows extensive evidence of gene decay. BMC Genomics 2008; Volum 9. ISSN 1471-2164.s 616 - .s doi: 10.1186/1471-2164-9-616.
  • Ahmad, Rafi; Hjerde, erik; Hansen, Geir Åsmund; Haugen, Peik; Willassen, Nils Peder. Prediction and Experimental Testing of Ferric Uptake Regulator Regulons in Vibrios. Journal of Molecular Microbiology and Biotechnology 2008. ISSN 1464-1801.s doi: 10.1159/000128322.
  • Thorvaldsen, Steinar; Hjerde, Erik; Fenton, Christopher Graham; Willassen, Nils Peder. Molecular characterization of cold adaptation based on ortholog protein sequences from Vibrionaceae species. Extremophiles 2007; Volum 11 (5). ISSN 1431-0651.s 719 - 732.s doi: 10.1007/s00792-007-0093-y.
  • Hjerde, Erik; Dahl, Svein G.; Sylte, Ingebrigt. Atypical and typical antipsychotic drug interactions with the dopamine D2 receptor. European Journal of Medicinal Chemistry 2005; Volum 40. ISSN 0223-5234.
  • Bösl, Korbinian; Ghavidel, Fatemeh; Tekle, Kidane M; Kleppe, Rune; Hjerde, Erik; Drabløs, Finn; Hovig, Eivind; Våge, Dag Inge; Willassen, Nils Peder; Petersen, Kjell; Jonassen, Inge. End-to-End Data Management Toolkit for Norwegian Life Scientists. 56th Contact Meeting of the Norwegian Biochemical Society (fulltekst) 2020-01-23 - 2020-01-26 2020.
  • Bösl, Korbinian; Hjerde, Erik; Figenschou, Lars; Vollan, erik axel; Willassen, Nils Peder. Workshop in Data Management for Life Science projects. Workshop in Data Management for Life Science projects (fulltekst) 2020-02-21 - 2020-02-21 2020.
  • Sanabria-Moreno, Adriana Maria; Simonsen, Gunnar Skov; Sollid, Johanna U Ericson; Johannessen, Mona; Hanssen, Anne Merethe; Hjerde, Erik. Metagenomics on prosthetic joint tissue samples inoculated in blood culture bottles. Annual IBA meeting 2019 2019-10-04 - 2019.
  • Sanabria-Moreno, Adriana Maria; Simonsen, Gunnar Skov; Johannessen, Mona; Sollid, Johanna U Ericson; Hjerde, Erik; Hanssen, Anne Merethe. Metagenomics on prosthetic joint tissue samples inoculated in blood culture bottles: a proof of concept study. 36th Annual meeting of the Nordic Society of Clinical Microbiology and Infectious Diseases (NSCMID) 2019-09-12 - 2019-09-15 2019.
  • Williamson, Adele Kim; Hjerde, Erik; Sarre, Aili; Leiros, Ingar; Berg, Kristel; Leiros, Hanna-Kirsti S.. Discovery and design of novel DNA ligases for biotechnology. 6th International Conference on Novel Enzymes 2018 2018-10-09 - 2018-10-12 2018.
  • Williamson, Adele Kim; Hjerde, Erik; Leiros, Hanna-Kirsti S.; Lian, Kjersti; Ramirez, Miguel A.; Patrick, Wayne M.. Beyond T4: discovery and design of DNA ligases for use in biotechnological applications. Cryo-EM Symposium 2017-07-06 - 2017-07-07 2017.
  • Esaiassen, Eirin; Cavanagh, Pauline; Hjerde, Erik; Simonsen, Gunnar Skov; Støen, Ragnhild; Klingenberg, Claus. Bifidobacterium longum subspecies infantis bacteremia in 3 extremely preterm infants receiving probiotics. Emerging Infectious Diseases 2016; Volum 22 (9). ISSN 1080-6040.s 1664 - 1666.s doi: 10.3201/eid2209.160033.
  • Williamson, Adele Kim; Leiros, Hanna-Kirsti S.; Hjerde, Erik; Lian, Kjersti; Ramirez, Miguel A.; Patrick, Wayne M.. Beyond T4: discovery and design of DNA ligases for use in biotechnological applications. EMBO Conference Series: The biochemistry and chemistry of biocatalysis: From understanding to design 2016-06-12 - 2016-06-15 2016.
  • Williamson, Adele Kim; Kahlke, Tim; Hjerde, Erik; Leiros, Hanna-Kirsti S.. Structural and Bioinformatic Studies of the ‘Lig E’Group of Bacterial ATP-Dependent DNA Ligases. The 52nd NBS contact meeting 2016-01-21 - 2016-01-24 2016.
  • Pedersen, hege lynum; Altermark, Bjørn; Hjerde, Erik; Williamson, Adele Kim; Pierechod, Marcin Miroslaw; Bjerga, Gro Elin Kjæreng; De Santi, Concetta; Willassen, Nils Peder; Smalås, Arne O.. Genome Sequencing of Bacteria Isolated from the Arctic Marine Environment. The 6th international BIOPROSP Conference 2013-02-20 - 2013-02-22 2013.
  • Hjerde, erik. The Complete Genome Sequence Of The Fish Pathogen Vibrio salmonicida. 2007.
  • Lorentzen, marit sjo; Hjerde, erik; Fenton, Chris; Willassen, Nils Peder. Sequencing and annotation of two cryptic plasmids from the fish pathogen Vibrio salmonicida. The Norwegian Biochemical Society 41st Contact meeting 2005-01-13 - 2005-01-16 2005.
  • Thorvaldsen, Steinar; Hjerde, Erik; Willassen, Nils Peder; Fenton, Chris; Flå, Tor. Celsius: A Database of Temperature Adapted Protein Structures. ECCB'2003 European Conference on Computational Biology (fulltekst) 2003-09-27 - 2003-09-30 2003.
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