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Browsing Brage NMBU by Author "Håvarstein, Leiv Sigve"

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Now showing items 1-20 of 36

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    • A CozE Homolog Contributes to Cell Size Homeostasis of Streptococcus pneumoniae 

      Stamsås, Gro Anita; Restelli, Marine; Ducret, A; Freton, Celine; Garcia, Pierre Simon; Håvarstein, Leiv Sigve; Straume, Daniel; Grangeasse, Christophe; Kjos, Morten (Peer reviewed; Journal article, 2020)
    • A penicillin resistant Streptococcus pneumoniae in the making : characterizing resistance development and cell fitness after acquiring low-affinity penicillin-binding proteins and a mosaic MurM 

      Heggenhougen, Maria Victoria (Master thesis, 2019)
      Streptococcus pneumoniae is an important human pathogen, causing about 100 millions of cases of disease and 1 – 2 million deaths every year. The rapid evolution and spread of multiresistant strains threaten current antibiotic ...
    • A qualitative assessment of the risks of transmission of microorganisms to humans resulting from the consumption of raw milk and raw cream in Norway. Panel for Biological Hazards, Norwegian Scientific Committee for Food Safety 

      Wasteson, Yngvild; Blom, Hans; Fossum, Kåre; Høiby, Ernst Arne; Narvhus, Judith; Håvarstein, Leiv Sigve; Kapperud, Georg; Lassen, Jørgen Fr; Lunestad, Bjørn Tore; Nesbakken, Truls; Rimstad, Espen; Robertson, Lucy; Skjerve, Eystein; Kruse, Hilde (VKM Report, Research report, 2006)
    • A risk assessment of shiga toxin-producing Escherichia coli (STEC) in the Norwegian meat chain with emphasis on dry-cured sausages 

      Rimstad, Espen; Håvarstein, Leiv Sigve; Kapperud, Georg; Lassen, Jørgen Fredrik; Lunestad, Bjørn Tore; Nesbakken, Truls; Robertson, Lucy Jane; Skjerve, Eystein; Wasteson, Yngvild (VKM Report, Research report, 2007)
    • Assessment of the potential risks associated with the proposed use of composted waste from the production of bacitracin as a soil additive. Opinion of the Panel on Biological Hazards 

      Kruse, Hilde; Håvarstein, Leiv Sigve; Kapperud, Georg; Lassen, Jørgen Fredrik; Lunestad, Bjørn Tore; Nesbakken, Truls; Rimstad, Espen; Robertson, Lucy; Skjerve, Eystein; Wasteson, Yngvild (VKM report;, Research report, 2005)
    • Cell-shape regulation in Streptococcus pneumoniae : EloR/KhpA, a new regulatory pathway administering cellelongation 

      Winther, Anja Ruud (PhD Thesis;2020:36, Doctoral thesis, 2020)
      The oval shaped Streptococcus pneumoniae utilizes both septal and peripheral peptidoglycan (PG) synthesis in order to maintain its shape. The protein complexes responsible for synthesizing PG are called the elongasome and ...
    • Characterization of Lactococcus garvieae from rainbow trout (Oncorhynchus mykiss) in Spain and Turkey 

      Nygaard, Anja (Master thesis, 2019)
      Lactococcus garvieae is an emerging pathogen that causes mortalities in various farmed fish species, resulting in significant economic losses in aquaculture worldwide. The Gram-positive bacteria is pathogenic to both ...
    • Characterization of the penicillin-binding proteins in Streptococcus oralis Uo5 

      Fykse, Silja Kavlie (Master thesis, 2017)
      In the search for new antibiotics the mechanism behind cell division has been studied for decades. The extensive use of antibiotics has led to the development of resistant bacteria, a problem that has become a global threat. ...
    • Class A PBPs have a distinct and unique role in the construction of the pneumococcal cell wall. 

      Straume, Daniel; Piechowiak, Katarzyna Wiaroslawa; Olsen, Silje; Stamsås, Gro Anita; Berg, Kari Helene; Kjos, Morten; Heggenhougen, Maria Victoria; Alcorlo, Martín; Hermoso, Juan A.; Håvarstein, Leiv Sigve (Peer reviewed; Journal article, 2020)
    • Class A PBPs have a distinct and unique role in the construction of the pneumococcal cell wall. 

      Straume, Daniel; Piechowiak, Katarzyna Wiaroslawa; Olsen, Silje Janette Bredholt; Stamsås, Gro Anita; Berg, Kari Helene; Kjos, Morten; Heggenhougen, Maria Victoria; Alcorlo, Martín; Hermoso, Juan A.; Håvarstein, Leiv Sigve (Journal article; Peer reviewed, 2020)
    • Class A PBPs: it is time to rethink traditional paradigms 

      Straume, Daniel; Piechowiak, Katarzyna Wiaroslawa; Kjos, Morten; Håvarstein, Leiv Sigve (Peer reviewed; Journal article, 2021)
    • Comments on: The opinion of the Agence française de sécurité sanitaire (Afssa) on changes to the control measures for sheep and goat herds in which a case of classical or atypical scrapie has been detected. Opinion of the Panel on Biological Hazards & Panel on Animal Health and Animal Welfare of the Norwegian Scientific Committee for Food Safety 

      Rimstad, Espen; Håvarstein, Leiv Sigve; Kapperud, Georg; Lassen, Jørgen Fredrik; Lunestad, Bjørn Tore; Nesbakken, Truls; Robertson, Lucy Jane; Skjerve, Eystein; Wasteson, Yngvild; Bøe, Knut Egil; Arnemo, Jon Martin; Braastad, Bjarne Olai; Fossum, Kåre; Hjeltnes, Brit Kristine; Håstein, Tore; Juell, Jon-Erik; Valle, Paul Steinar; Waagbø, Rune (VKM Report, Research report, 2007)
    • CRISPR Interference for Rapid Knockdown of Essential Cell Cycle Genes in Lactobacillus plantarum. 

      Myrbråten, Ine Storaker; Wiull, Kamilla; Salehian, Zhian; Håvarstein, Leiv Sigve; Straume, Daniel; Mathiesen, Geir; Kjos, Morten (Journal article; Peer reviewed, 2019)
    • Deteksjon og kvantitering av humant papillomavirus DNA i serum hos kvinner med og uten celleforandringer i livmorhalsen 

      Sandberg, Yvonne (Master thesis, 2017)
      Persisterende infeksjon med humant papillomavirus (HPV) kan føre til utvikling av celleforandringer i livmorhalsen og livmorhalskreft, som på verdensbasis forårsaker 270 000 dødsfall hvert år. Innføringen av screeningprogrammet ...
    • EloR interacts with the lytic transglycosylase MltG at midcell in Streptococcus pneumoniae R6 

      Winther, Anja Ruud; Kjos, Morten; Herigstad, Marie Leangen; Håvarstein, Leiv Sigve; Straume, Daniel (Peer reviewed; Journal article, 2021)
    • Genome editing in food and feed production – implications for risk assessment 

      Bodin, Johanna Eva; Thorstensen, Tage; Alsheikh, Muath K; Basic, Dean; Edvardsen, Rolf Brudvik; Dalen, Knut Tomas; das Neves, Carlos Gonçalo; Duale, Nur; Eklo, Ole Martin; Ergon, Åshild Gunilla; Jevnaker, Anne-Marthe Ganes; Hindar, Kjetil; Håvarstein, Leiv Sigve; Malmstrøm, Martin; Nielsen, Kaare Magne; Olsen, Siri Lie; Rueness, Eli Knispel; Sanden, Monica; Sipinen, Ville Erling; Vikse, Rose; von Krogh, Kristine; Våge, Dag Inge; Wargelius, Anna; Wendell, Micael; Yazdankhah, Siamak Pour; Alexander, Jan; Bruzell, Ellen Merete; Hemre, Gro Ingunn; Vandvik, Vigdis; Agdestein, Angelika; Elvevoll, Edel O.; Hessen, Dag Olav; Hofshagen, Merete; Husøy, Trine; Knutsen, Helle Katrine; Krogdahl, Åshild; Nilsen, Asbjørn Magne; Rafoss, Trond; Skjerdal, Olaug Taran; Steffensen, Inger-Lise Karin; Strand, Tor Arne; Velle, Gaute; Wasteson, Yngvild (Peer reviewed; Journal article, 2021)
      The Norwegian Scientific Committee for Food and Environment (VKM) initiated this work to examine the extent to which organisms developed by genome-editing technologies pose new challenges in terms of risk assessment. This ...
    • Genome editing in food and feed production – implications for risk assessment. Scientific Opinion of the Scientific Steering Committee of the Norwegian Scientific Committee for Food and Environment 

      Bodin, Johanna Eva; Thorstensen, Tage; Alsheikh, Muath K; Basic, Dean; Edvardsen, Rolf Brudvik; Dalen, Knut Tomas; Duale, Nur; Eklo, Ole Martin; Ergon, Åshild Gunilla; Jevnaker, Anne-Marthe Ganes; Hindar, Kjetil; Håvarstein, Leiv Sigve; Malmstrøm, Martin; Nielsen, Kaare Magne; Olsen, Siri Lie; Rueness, Eli Knispel; Sanden, Monica; Sipinen, Ville Erling; von Krogh, Kristine; Våge, Dag Inge; Wargelius, Anna; Wendell, Per Hans Micael; Yazdankhah, Siamak Pour; Alexander, Jan; Bruzell, Ellen Merete; Hemre, Gro Ingunn; Vandvik, Vigdis; Agdestein, Angelika; Elvevoll, Edel O.; Hessen, Dag Olav; Hofshagen, Merete; Husøy, Trine; Knutsen, Helle Katrine; Krogdahl, Åshild; Nilsen, Asbjørn Magne; Rafoss, Trond; Skjerdal, Olaug Taran; Steffensen, Inger-Lise Karin; Strand, Tor Arne; Velle, Gaute; Wasteson, Yngvild (VKM report;2021:18, Journal article; Peer reviewed, 2021)
      The Norwegian Scientific Committee for Food and Environment (VKM) initiated this work to examine the extent to which organisms developed by genome-editing technologies pose new challenges in terms of risk assessment. This ...
    • Identification of EloR (Spr1851) as a regulator of cell elongation in Streptococcus pneumoniae. 

      Stamsås, Gro; Straume, Daniel; Ruud Winther, Anja; Kjos, Morten; Frantzen, Cyril Alexander; Håvarstein, Leiv Sigve (Peer reviewed; Journal article, 2017)
    • Identification of pneumococcal proteins that are functionally linked to penicillin-binding protein 2b (PBP2b). 

      Straume, Daniel; Stamsås, Gro; Berg, Kari Helene; Salehian, Zhian; Håvarstein, Leiv Sigve (Journal article; Peer reviewed, 2016)
    • Molecular mechanisms of pneumococcal fratricide 

      Eldholm, Vegard (PhD Thesis;2010:13, Doctoral thesis, 2010)
      The bacterium Streptococcus pneumoniae is endowed with the ability to take up naked DNA from the surroundings and recombine this DNA into the chromosome. This property, termed competence for natural genetic transformation, ...

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