Blar i Brage NMBU på forfatter "Håvarstein, Leiv Sigve"
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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, ... -
Nascent teichoic acids insertion into the cell wall directs the localization and activity of the major pneumococcal autolysin LytA.
Bonnet, Julie; Mortier-Barrière, Isabelle; Campo, Nathalie; Jacq, Maxime; Moriscot, Christine; Straume, Daniel; Berg, Kari Helene; Håvarstein, Leiv Sigve; Wong, Yung-Sing; Vernet, Thierry; Di Guilmi, Anne Marie (Journal article, 2018) -
Natural genetic transformation: development of a new genetic tool for Streptococcus thermophilus
Blomqvist, Trinelise (PhD Thesis;2010:16, Doctoral thesis, 2010)Lactic acid bacteria (LAB) have been used in fermentation of foods for hundreds or even thousands of years. During the last decade the genome sequences of a number of commercially important LAB species and strains have ... -
A novel proteinaceous molecule produced by Lysinibacillus sp. OF-1 depends on the Ami oligopeptide transporter to kill Streptococcus pneumoniae.
Hauge, Ingvild Hals; Sandegren, Vilde; Winther, Anja Ruud; Bøe, Cathrine Arnason; Salehian, Zhian; Håvarstein, Leiv Sigve; Kjos, Morten; Straume, Daniel (Peer reviewed; Journal article, 2023) -
Overexpression of the fratricide immunity protein ComM leads to growth inhibition and morphological abnormalities in Streptococcus pneumoniae
Straume, Daniel; Stamsås, Gro Anita; Salehian, Zhian; Håvarstein, Leiv Sigve (Journal article; Peer reviewed, 2017)The important human pathogen Streptococcus pneumoniae is a naturally transformable species. When developing the competent state, it expresses proteins involved in DNA-uptake, DNA-processing and homologous recombination. ... -
Prevention of EloR/KhpA heterodimerization by introduction of site-specific amino acid substitutions renders the essential elongasome protein PBP2b redundant in Streptococcus pneumoniae
Winther, Anja Ruud; Kjos, Morten; Stamsås, Gro Anita; Håvarstein, Leiv Sigve; Straume, Daniel (Peer reviewed; Journal article, 2019) -
Purification and characterization of streptovoracin, a novel antibiotic produced by a Pseudomonas species isolated from the Oslo fjord
Nesdal, Malene Tidemann (Master thesis, 2019)Antibiotikaresistent Streptococcus pneumoniae er en av de 18 største bakterielle truslene verden står ovenfor. Bakterien er alene ansvarlig for oppunder 2 millioner dødsfall hvert år på verdensbasis. På grunn av stadig ... -
Regulation of expression, purification and structural determination of the cross-wall splitting protein PcsB in Streptococcus pneumoniae
Stamsås, Gro Anita (PhD Thesis;2015:8, Doctoral thesis, 2018-04-24)The human pathogen Streptococcus pneumoniae causes approximately 1.6 million deaths per year. Hence, it is of great concern that the bacterium`s resistance against antibiotics has increased dramatically in recent decades. ... -
Rensing og karakterisering av colwellicin, et antimikrobielt stoff isolert fra Shewanella colwelliana
Fonn, Jeanette Stenersen (Master thesis, 2020)Da antibiotika ble introdusert på markedet, gav det håp om at infeksiøse sykdommer kunne bli bekjempet en gang for alle. Denne optimismen ble etter hvert overskygget av et økende antibiotikaresistensproblem. Resistensproblemet ... -
Risikovurdering knyttet til konsum av rå melk og kolostrum
Rimstad, Espen; Håvarstein, Leiv Sigve; Kapperud, Georg; Lassen, Jørgen Fredrik; Lunestad, Bjørn Tore; Nesbakken, Truls; Robertson, Lucy Jane; Skjerve, Eystein; Wasteson, Yngvild; Fossum, Kåre; Høiby, Arne; Narvhus, Judith Ann (VKM Report, Research report, 2007) -
Risikovurdering vedrørende Listeria monocytogenes relatert til gravides konsum av sushi. Faggruppe for hygiene og smittestoffer i Vitenskapskomiteen for mattrygghet
Lunestad, Bjørn Tore; Lassen, Jørgen Fr; Rørvik, Liv Marit; Håvarstein, Leiv Sigve; Kapperud, Georg; Nesbakken, Truls; Rimstad, Espen; Robertson, Lucy; Skjerve, Eystein; Wasteson, Yngvild; Kruse, Hilde (VKM Report, Research report, 2006) -
Structural Characterization of the Essential Cell Division Protein FtsE and Its Interaction with FtsX in Streptococcus pneumoniae
Alcorlo, Martín; Straume, Daniel; Lutkenhaus, Joe; Håvarstein, Leiv Sigve; Hermoso, Juan A. (Peer reviewed; Journal article, 2020)FtsEX is a membrane complex widely conserved across diverse bacterial genera and involved in critical processes such as recruitment of division proteins and in spatial and temporal regulation of muralytic activity during ... -
Structure of the essential peptidoglycan amidotransferase MurT/GatD complex from Streptococcus pneumoniae.
Morlot, Cécile; Straume, Daniel; Peters, Katharina; Hegnar, Olav Aaseth; Simon, Nolwenn; Villard, Anne-Maria; Contreras-Martel, Carlos; Leisico, Francisco; Breukink, Eefjan; Gravier-Pelletier, Christine; Le Corre, Laurent; Vollmer, Waldemar; Pietrancosta, Nicolas; Håvarstein, Leiv Sigve; Zapun, André (Journal article; Peer reviewed, 2018) -
Structure of the Large Extracellular Loop of FtsX and Its Interaction with the Essential Peptidoglycan Hydrolase PcsB in Streptococcus pneumoniae.
Rued, Britta E.; Alcorlo, Martín; Edmonds, Katherine A.; Martínez-Caballero, Siseth; Straume, Daniel; Fu, Yue; Bruce, Kevin E.; Wu, Hongwei; Håvarstein, Leiv Sigve; Hermoso, Juan A.; Winkler, Malcom E.; Giedroc, David P. (Peer reviewed; Journal article, 2019)Streptococcus pneumoniae is a leading killer of infants and immunocompromised adults and has become increasingly resistant to major antibiotics. Therefore, the development of new antibiotic strategies is desperately needed. ... -
UTTALELSE OM BASF Plant Science GmbH GENMODIFISERT POTET AMYLOPEKTIN POTET EVENT EH92-527-1 (EFSA/GMO/UK/2005/14)
Nes, Ingolf; Berdal, Knut G; Foss, Grethe Synnøve; Håvarstein, Leiv Sigve; Klemsdal, Sonja; Linnestad, Casper; Løvik, Martinus; Mikalsen, Arne; Nerland, Audun Helge; Thrane, Vibeke (VKM Report, Research report, 2005) -
Uttalelse om Dow AgroSciences genmodifiserte bomull 281-24-236 x 3006-210-23 (EFSA/GMO/NL/2005/16). Vurdert og godkjent av Faggruppe for genmodifiserte organismer
Nes, Ingolf; Berdal, Knut G; Foss, Grethe Synnøve; Håvarstein, Leiv Sigve; Linnestad, Casper; Løvik, Martinus; Mikalsen, Arne; Nerland, Audun Helge; Thrane, Vibeke; Klemsdal, Sonja (VKM report, Research report, 2005) -
UTTALELSE OM MONSANTOS GENMODIFISERTE BOMULL MON531XMON1445 (EFSA/GMO/UK/2005/09)
Nes, Ingolf; Berdal, Knut G; Foss, Grethe Synnøve; Håvarstein, Leiv Sigve; Klemsdal, Sonja; Linnestad, Casper; Løvik, Martinus; Nerland, Audun Helge; Thrane, Vibeke (VKM Report, Research report, 2005) -
Uttalelse om Monsantos genmodifiserte mais NK603XMON810 (EFSA/GMO/UK/2004/01). Vurdert og godkjent av Faggruppe for genmodifiserte organismer
Nes, Ingolf; Berdal, Knut G; Foss, Grethe Synnøve; Håvarstein, Leiv Sigve; Linnestad, Casper; Løvik, Martinus; Mikalsen, Arne; Nerland, Audun Helge; Thrane, Vibeke (VKM Report, Research report, 2005)