Bilde av Helland, Ronny
Bilde av Helland, Ronny
Department of Chemistry ronny.helland@uit.no +4777646474 +47 90940431 Tromsø REALF C 317

Ronny Helland


Head of Administration, Department of Chemistry


  • Bjarni Ásgeirsson, Sigurbjörn Markússon, Sigríður S. Hlynsdóttir, Ronny Helland, Jens G. Hjörleifsson :
    X-ray crystal structure of Vibrio alkaline phosphatase with the non-competitive inhibitor cyclohexylamine
    Biochemistry and Biophysics Reports 2020 ARKIV / DOI
  • Jens Guðmundur Hjörleifsson, Ronny Helland, Manuela Magnusdottir, Bjarni Ásgeirsson :
    The high catalytic rate of the cold-active Vibrio alkaline phosphatase requires a hydrogen bonding network involving a large interface loop
    FEBS Open Bio 2020 ARKIV / DOI
  • Scott Mazurkewich, Ronny Helland, Alasdair Mackenzie, Vincent Eijsink, Phillip Byron Pope, Gisela Brändén et al.:
    Structural insights of the enzymes from the chitin utilization locus of Flavobacterium johnsoniae
    Scientific Reports 13. August 2020 ARKIV / DOI
  • Man Kumari Gurung, Bjørn Altermark, Ronny Helland, Arne O. Smalås, Inger Lin Uttakleiv Ræder :
    Features and structure of a cold active N-acetylneuraminate lyase
    PLOS ONE 2019 ARKIV / FULLTEKST / DOI
  • Ronny Helland, Eva katrin Bjørkeng, Ulli Rothweiler, Magne Olav Sydnes, Daniela Maria Pampanin :
    The crystal structure of haemoglobin from Atlantic cod
    Acta Crystallographica. Section F : Structural Biology and Crystallization Communications 2019 ARKIV / DOI
  • Concetta De Santi, Osman A. B. S. M. Gani, Ronny Helland, Adele Kim Williamson :
    Structural insight into a CE15 esterase from the marine bacterial metagenome
    Scientific Reports 2017 ARKIV / DOI
  • Marit Seppola, Kathrine Ryvold Bakkemo, Helene V. Mikkelsen, Bjørnar Myrnes, Ronny Helland, David Irwin et al.:
    Multiple specialised goose-type lysozymes potentially compensate for an exceptional lack of chickentype lysozymes in Atlantic cod
    Scientific Reports 2016 ARKIV / FULLTEKST / DOI
  • Hilde Lysvand, Ronny Helland, Lars Hagen, Geir Slupphaug, Ole-Jan Iversen :
    Psoriasis pathogenesis – Pso p27 constitutes a compact structure forming large aggregates
    Biochemistry and Biophysics Reports 2015 ARKIV / DOI
  • Tony Christopeit, Trine Josefine Olsen Carlsen, Ronny Helland, Hanna-Kirsti S. Leiros :
    Discovery of novel inhibitor scaffolds against the metallo-β-lactamase VIM-2 by surface plasmon resonance (SPR) based fragment screening
    Journal of Medicinal Chemistry 2015 ARKIV / DOI
  • Kenneth Johnson, Thomas Ve, Øivind Larsen, Rolf B. Pedersen, Johan R. Lillehaug, Harald B Jensen et al.:
    CorA is a copper repressible surface-associated copper(I)-binding protein produced in Methylomicrobium album BG8
    PLOS ONE 2014 ARKIV / DOI
  • Zarah Forsberg, Alasdair Mackenzie, Morten Sørlie, Åsmund Kjendseth Røhr, Ronny Helland, Andrew S. Arvai et al.:
    Structural and functional characterization of a conserved pair of bacterial cellulose-oxidizing lytic polysaccharide monooxygenases
    Proceedings of the National Academy of Sciences of the United States of America 28. April 2014 DOI
  • D. Cazamea-Catalan, E. Magnanou, Ronny Helland, L. Besseau, Gilles Boeuf, Jack Falcòn et al.:
    Unique arylalkylamine N-acetyltransferase-2 polymorphism in salmonids and profound variations in thermal stability and catalytic efficiency conferred by two residues
    Journal of Experimental Biology 2013 DOI
  • Damien D. Cazamèa-Catalan, Elodie Magnanou, Ronny Helland, Gilmer Vanegas, Laurence Besseau, Gilles Boeuf et al.:
    Functional diversity of Teleost arylalkylamine N-acetyltransferase-2: is the timezyme evolution driven by habitat temperature?
    Molecular Ecology 2012 DOI
  • Thomas Ve, Karina Mathisen, Ronny Helland, Odd Andre Karlsen, Anne Fjellbirkeland, Åsmund Kjendseth Røhr et al.:
    The Methylococcus capsulatus (Bath) Secreted Protein, MopE*, Binds Both Reduced and Oxidized Copper
    PLOS ONE 2012 ARKIV / DOI
  • Leidy Lagos, Dimitar Borisov Iliev, Ronny Helland, Mario Rosemblatt, Jorunn B Jørgensen :
    CD40L-A costimulatory molecule involved in the maturation of antigen presenting cells in Atlantic salmon (Salmo salar)
    Developmental and Comparative Immunology 2012 DOI
  • Peter Kyomuhendo, Bjørnar Myrnes, Bjørn Olav Brandsdal, Arne Smalås, Inge Waller Nilsen, Ronny Helland :
    Thermodynamics and structure of a salmon cold active goose-type lysozyme
    Comparative Biochemistry and Physiology - Part B: Biochemistry & Molecular Biology 2010 DOI
  • Anna Szlachcic, M Zakrzewska, D Krowarsch, vibeke Os, Ronny Helland, Arne Oskar Smalås et al.:
    Structure of a highly stable mutant of human fibroblast growth factor 1
    Acta Crystallographica Section D: Biological Crystallography 2009 DOI
  • Ronny Helland, Renate Lie Larsen, Bjarni Åsgeirsson :
    The 1.4 angstrom crystal structure of the large and cold-active Vibrio sp. alkaline phosphatase
    Biochimica et Biophysica Acta - Proteins and Proteomics 2009 DOI
  • Ronny Helland, Renate Lie Larsen, Solrun Finstad, Peter Kyomuhendo, Atle Noralf Larsen :
    Crystal structures of g-type lysozyme from Atlantic cod shed new light on substrate binding and the catalytic mechanism
    Cellular and Molecular Life Sciences (CMLS) 2009 DOI
  • Bjørn Altermark, Ronny Helland, Elin Moe, Nils Peder Willassen, Arne Oskar Smalås :
    Structural adaptation of endonuclease I from the cold-adapted and halophilic bacterium Vibrio salmonicida
    Acta Crystallographica Section D: Biological Crystallography 2008 DOI
  • Ronny Helland, Anne Fjellbirkeland, Odd-Arne Karlsen, Johan Richard Lillehaug, Harald Jensen, Thomas Ve :
    An oxidized tryptophan facilitates copper binding in Methylococcus capsulatus-secreted protein MopE
    Journal of Biological Chemistry 2008 DOI
  • Bjørn Altermark, Ronny Helland, Elin Moe, Nils Peder Willassen, Arne Oskar Smalås :
    Environmental adaptation of endonuclease I from Vibrio salmonicida
    Acta Crystallographica Section D: Biological Crystallography 2008
  • Laila Mirja Niiranen, Bjørn Altermark, Bjørn Olav Brandsdal, Hanna-Kirsti S. Leiros, Ronny Helland, Arne Oskar Smalås et al.:
    Effects of salt on the kinetics and thermodynamic stability of endonuclease I from Vibrio salmonicida and Vibrio cholerae
    The FEBS Journal 2008 DOI
  • G Saelensminde, Gisle Sælensminde, O Halskau, Øyvind Halskau, Ronny Helland, Nils Peder Willassen et al.:
    Structure-dependent relationships between growth temperature of prokaryotes and the amino acid frequency in their proteins
    Extremophiles 2007 DOI
  • Ellen Kristin Riise, marit sjo Lorentzen, Ronny Helland, Arne Oskar Smalås, Hanna-Kirsti S. Leiros, Nils Peder Willassen :
    The first structure of a cold-active catalase from Vibrio salmonicida at 1.96 angstrom reveals structural aspects of cold adaptation
    Acta Crystallographica Section D: Biological Crystallography 2007 DOI
  • Olayiwola Adekoya, Ronny Helland, Nils P Willassen, Ingebrigt Sylte :
    Comparative sequence and structure analysis reveal features of cold adaptation of an enzyme in the thermolysin family
    Proteins: Structure, Function, and Bioinformatics 2006
  • Ronny Helland, Atle Noralf Larsen, Arne Oskar Smalås, Nils Peder Willassen :
    The 1.8 angstrom crystal structure of a proteinase K-like enzyme from a psychrotroph Serratia species
    The FEBS Journal 2006
  • Atle Noralf Larsen, Elin Moe, Ronny Helland, Dag Rune Gjellesvik, Nils Peder Willassen :
    Characterization of a recombinantly expressed proteinase K-like enzyme from a psychrotrophic Serratia sp
    The FEBS Journal 2006
  • Bjørn Altermark, Arne Oskar Smalås, Nils Peder Willassen, Ronny Helland :
    The structure of Vibrio cholerae extracellular endonuclease I reveals the presence of a buried chloride ion
    Acta Crystallographica Section D: Biological Crystallography 2006
  • Ellen Kristin Riise, Marit Sjo Lorentzen, Ronny Helland, Nils P Willassen :
    Crystallization and preliminary X-ray diffraction analysis of a cold-adapted catalase from Vibrio salmonicida
    Acta Crystallographica. Section F : Structural Biology and Crystallization Communications 2006
  • Hanna-Kirsti S. Leiros, Hanna Kirsti Schrøder Leiros, Bjørn Olav Brandsdal, Ole Andreas Andersen, vibeke Os, Ingar Leiros et al.:
    Trypsin specificity as elucidated by LIE calculations, X-ray structures, and association constant measurements
    Protein Science 2004
  • Honorata Czapinska, Ronny Helland, Arne Oskar Smalås, Jacek Otlewski :
    Crystal Structures of Five Bovine Chymotrypsin Complexes with P1 BPTI Variants
    Journal of Molecular Biology (JMB) 2004
  • Man Kumari Gurung, Tor Olav Berg, Marie-Josée Haglund Halsør, Bjørn Altermark, Ingar Leiros, Ronny Helland et al.:
    Efficient production of sialic acids- Using enzymes for biomass conversion
    2017
  • Man Kumari Gurung, Tor Olav Berg, Marie-Josée Haglund Halsør, Bjørn Altermark, Ingar Leiros, Ronny Helland et al.:
    Efficient production of sialic acids- Using enzymes for biomass conversion
    2017
  • Tor Olav Berg, Marie-Josée Haglund Halsør, Man Kumari Gurung, Bjørn Altermark, Ingar Leiros, Ulli Rothweiler et al.:
    From marine rest raw materials to sialic acids: Using enzymes for biomass conversion
    2016
  • Tor Olav Berg, Bjørn Altermark, Ingar Leiros, Ronny Helland, Inger Lin Uttakleiv Ræder :
    Production of sialic acids and derivatives by enzyme catalysis
    2016
  • Yvonne Piotrowski, Netsanet Gizaw Assefa, Ronny Helland, Kirsti Merete Johannessen, Nils Peder Willassen, Atle Noralf Larsen :
    Enzymes from the Arctic - The cold gold
    2015
  • Tor Olav Berg, Bjørn Altermark, Ingar Leiros, Ronny Helland, Inger Lin Uttakleiv Ræder :
    Biocatalytical production of sialic acids and derivatives
    2015
  • Zarah Forsberg, Alasdair Mackenzie, Morten Sørlie, Åsmund Kjendseth Røhr, Ronny Helland, Gustav Vaaje-Kolstad et al.:
    Characterization of cellulose-active lytic polysaccharide monooxygenases with complementary activities
    2014
  • Yvonne Piotrowski, Netsanet Gizaw Assefa, Ronny Helland, Kirsti Merete Johannessen, Bjarne Landfald, Arne O. Smalås et al.:
    Enzymes from the Arctic - The cold gold
    2014
  • Inger Lin Uttakleiv Ræder, Bjørn Altermark, Man Kumari Gurung, Ronny Helland, Arne O. Smalås :
    Sialic acids in marine bacteria
    2014
  • Man Kumari Gurung, Bjørn Altermark, Inger Lin Uttakleiv Ræder, Ronny Helland, Arne O. Smalås :
    Features and structure of a sialic acid aldolase from Aliivibrio salmonicida
    2013
  • Inger Lin Uttakleiv Ræder, Man Kumari Gurung, Bjørn Altermark, Tor Olav Berg, Ronny Helland, Arne O. Smalås :
    Sialic acid biosynthesis in marine bacteria
    2013
  • Odd-Arne Olsen, Wenche Johansen, Sidsel Emilsen, Tatiana Belova, Zhe Liang, Arne Smalås et al.:
    Structural & functional significance of the DEK1 phytocalpain during land plant evolution from green algae
    2010
  • Atle Noralf Larsen, Ronny Helland, Gunbjørg Svineng, Trond Ø. Jørgensen :
    Identification, cloning and recombinant expression of a goose-type lysozyme from Atlantic cod (Gadus Morhua)
    2007
  • Bjørn Altermark, Ronny Helland, Laila Mirja Niiranen, Elin Moe, Bjørn Olav Brandsdal, Arne Oskar Smalås et al.:
    Optimum enzymatic activity of endonuclease I from Vibrio salmonicida and Vibrio cholerae correlateswith the bacterial growth habitat
    2006
  • Ronny Helland, Atle Noralf Larsen, Nils Peder Willassen :
    Structural basis for substrate specificity in two enzymes in the Proteinase K family
    2005
  • Olayiwola Adedotun Adekoya, Ronny Helland, Nils Peder Willassen, Ingebrigt Sylte :
    Structural determinants for a cold adapted enzyme in the thermolysin family
    2005
  • Atle Noralf Larsen, Ronny Helland, Dag Rune Gjellesvik, Nils Peder Willassen :
    Structural basis for S1-S4 specificity in two enzymes of the proteinase K family
    2004
  • Ronny Helland :
    Bioinformatics in Tromsø
    2003

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    Research interests

    My research interests include structure-function studies of proteins (enzymes): How does the atomic structure affect an enzyme's activity, specificity and efficiency. Enzymes which originates from cold adapted organisms often have unique properties. These we want to find use for in biochemical and biotechnological industries.

     

    Participate in:

    The Norwegian Structural Biology Centre
    Bacterial sialic acids
    MarSynth – Marine DNA modifying enzymes for synthetic biology
    Optimization and Application Development of Marine Cold-adapted DNA Polymerases – OptiZyme




    REALF C 317

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