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List of works by Leiv Sigve Håvarstein

A CozE Homolog Contributes to Cell Size Homeostasis of Streptococcus pneumoniae

scientific article published on 27 October 2020

A family of bacteriocin ABC transporters carry out proteolytic processing of their substrates concomitant with export

scientific article

A food-grade site-directed mutagenesis system for Streptococcus thermophilus LMG 18311

scientific article published on 24 December 2009

A hydrophobic patch in the competence-stimulating Peptide, a pneumococcal competence pheromone, is essential for specificity and biological activity

scientific article published in March 2006

A novel lactococcal bacteriocin whose activity depends on the complementary action of two peptides ⬇️

scientific article published on September 1, 1992

A predatory mechanism dramatically increases the efficiency of lateral gene transfer in Streptococcus pneumoniae and related commensal species

scientific article

An unmodified heptadecapeptide pheromone induces competence for genetic transformation in Streptococcus pneumoniae

scientific article

Applications of magnetic beads with covalently attached oligonucleotides in hybridization: isolation and detection of specific measles virus mRNA from a crude cell lysate.

scientific article published in August 1990

Association of the lactococcin A immunity factor with the cell membrane: purification and characterization of the immunity factor

scientific article published on 01 July 1993

Attachment of capsular polysaccharide to the cell wall in Streptococcus pneumoniae

scientific article

BOX elements modulate gene expression in Streptococcus pneumoniae: impact on the fine-tuning of competence development

scientific article

Bacterial gene transfer by natural genetic transformation.

scientific article

Biochemical and genetic characterization of enterocin A from Enterococcus faecium, a new antilisterial bacteriocin in the pediocin family of bacteriocins ⬇️

scientific article

Biochemical and genetic characterization of enterocin P, a novel sec-dependent bacteriocin from Enterococcus faecium P13 with a broad antimicrobial spectrum ⬇️

scientific article published on November 1, 1997

Biochemical and genetic evidence that Enterococcus faecium L50 produces enterocins L50A and L50B, the sec-dependent enterocin P, and a novel bacteriocin secreted without an N-terminal extension termed enterocin Q.

scientific article

Biosynthesis of bacteriocins in lactic acid bacteria

scientific article published on October 1996

CHiC, a new tandem affinity tag for the protein purification toolbox

scientific article published on 12 November 2012

CRISPR Interference for Rapid Knockdown of Essential Cell Cycle Genes in

article

Cannibalism and fratricide: mechanisms and raisons d'être

scientific article published on March 2007

Characterization of a new serotype of infectious pancreatic necrosis virus isolated from Atlantic salmon

scientific article

Characterization of the locus responsible for the bacteriocin production in Lactobacillus plantarum C11

scientific article

Choline-binding protein D (CbpD) in Streptococcus pneumoniae is essential for competence-induced cell lysis

scientific article published on July 2005

Class A PBPs have a distinct and unique role in the construction of the pneumococcal cell wall

scientific article published on 02 March 2020

ClpC acts as a negative regulator of competence in Streptococcus thermophilus

scientific article published on 24 March 2011

Competence for genetic transformation in encapsulated strains of Streptococcus pneumoniae: two allelic variants of the peptide pheromone

scientific article

Competence without a competence pheromone in a natural isolate of Streptococcus infantis

scientific article

Competence-induced cells of Streptococcus pneumoniae lyse competence-deficient cells of the same strain during cocultivation

scientific article published on December 2003

Competence-induced fratricide in streptococci

scientific article published on June 2007

Competence-induced fratricide in streptococci

scientific article published in 2007

Correction: Evolution of Streptococcus pneumoniae and Its Close Commensal Relatives

scientific article published on 11 December 2009

CozEa and CozEb play overlapping and essential roles in controlling cell division in Staphylococcus aureus

scholarly article by Gro Anita Stamsås published in September 2018

CozEa and CozEb play overlapping and essential roles in controlling cell division inStaphylococcus aureus

Deletion of the murein hydrolase CbpD reduces transformation efficiency in Streptococcus thermophilus

scientific article published on 12 January 2012

Effects of low PBP2b levels on cell morphology and peptidoglycan composition in Streptococcus pneumoniae R6.

scientific article published on 19 July 2013

Enterocins L50A and L50B, two novel bacteriocins from Enterococcus faecium L50, are related to staphylococcal hemolysins

scientific article

Evidence that pneumococcal WalK is regulated by StkP through protein-protein interaction

scientific article published on 29 November 2016

Evolution of Streptococcus pneumoniae and its close commensal relatives.

scientific article

Extracellular-peptide control of competence for genetic transformation in Streptococcus pneumoniae

scientific article

Fratricide in Streptococcus pneumoniae: contributions and role of the cell wall hydrolases CbpD, LytA and LytC.

scientific article published on 23 April 2009

Fratricide is essential for efficient gene transfer between pneumococci in biofilms

scientific article

Genetics of non-lantibiotic bacteriocins

scientific article published on 01 January 1995

Identification of DNA binding sites for ComE, a key regulator of natural competence in Streptococcus pneumoniae

scientific article published on 01 August 1999

Identification of EloR (Spr1851) as a regulator of cell elongation in Streptococcus pneumoniae

scientific article published on 15 July 2017

Identification of a competence regulon in Streptococcus pneumoniae by genomic analysis ⬇️

scientific article published on 01 August 1998

Identification of pneumococcal proteins that are functionally linked to penicillin-binding protein 2b (PBP2b).

scientific article published on 29 September 2016

Identification of the DNA-binding sites for two response regulators involved in control of bacteriocin synthesis in Lactobacillus plantarum C11

scientific article published on 01 August 1998

Identification of the streptococcal competence-pheromone receptor

scientific article published in August 1996

In vivo proteomics identifies the competence regulon and AliB oligopeptide transporter as pathogenic factors in pneumococcal meningitis

scientific article published on 29 July 2019

Increasing competence in the genus Streptococcus

scientific article published on 01 November 2010

Induction of natural competence in Streptococcus pneumoniae triggers lysis and DNA release from a subfraction of the cell population

scientific article

Intercellular Communication in Gram-Positive Bacteria Depends on Peptide Pheromones and Their Histidine Kinase Receptors

article

LytF, a novel competence-regulated murein hydrolase in the genus Streptococcus

scientific article published on 28 November 2011

Mapping of neutralization epitopes on infectious pancreatic necrosis viruses

scientific article published on 01 May 1995

Natural competence in the genus Streptococcus: evidence that streptococci can change pherotype by interspecies recombinational exchanges ⬇️

scientific article published on November 1, 1997

Natural genetic transformation: A novel tool for efficient genetic engineering of the dairy bacterium Streptococcus thermophilus

scientific article published on October 2006

Natural genetic transformation: prevalence, mechanisms and function

scientific article

Natural transformation and genome evolution in Streptococcus pneumoniae

scientific article

New insights into the pneumococcal fratricide: relationship to clumping and identification of a novel immunity factor

scientific article published in February 2006

Overexpression of the fratricide immunity protein ComM leads to growth inhibition and morphological abnormalities in Streptococcus pneumoniae

scientific article published on 28 November 2016

Peptide-regulated gene depletion system developed for use in Streptococcus pneumoniae

scientific article published on 29 July 2011

Pheromone-induced expression of recombinant proteins in Streptococcus thermophilus

article published in 2006

Pneumococcal CbpD is a murein hydrolase that requires a dual cell envelope binding specificity to kill target cells during fratricide

scientific article published on 25 March 2010

Pneumococcal LytR, a protein from the LytR-CpsA-Psr family, is essential for normal septum formation in Streptococcus pneumoniae

scientific article published on 6 July 2009

Prevention of EloR/KhpA heterodimerization by introduction of site-specific amino acid substitutions renders the essential elongasome protein PBP2b redundant in Streptococcus pneumoniae

Production of class II bacteriocins by lactic acid bacteria; an example of biological warfare and communication

scientific article

Properties and biological role of streptococcal fratricins

scientific article published on 09 March 2012

Purification and partial characterization of an IgM-like serum immunoglobulin from Atlantic salmon (Salmo salar).

scientific article published in January 1988

Regulation of competence for genetic transformation in Streptococcus pneumoniae by an auto-induced peptide pheromone and a two-component regulatory system

scientific article

Regulation of natural genetic transformation and acquisition of transforming DNA in Streptococcus pneumoniae

scientific article published on May 2009

Sequence of the large double-stranded RNA segment of the N1 strain of infectious pancreatic necrosis virus: a comparison with other Birnaviridae

scientific article published on February 1990

Stability of the nucleotide sequence of the phosphoprotein gene of measles virus during lytic infections.

scientific article published in April 1990

Staphylococcus aureus competence genes: mapping of the SigH, ComK1 and ComK2 regulons by transcriptome sequencing

scientific article

Structural Characterization of the Essential Cell Division Protein FtsE and Its Interaction with FtsX in Streptococcus pneumoniae

scientific article published on 01 September 2020

Structural basis of PcsB-mediated cell separation in Streptococcus pneumoniae

scientific article

Structure of the Large Extracellular Loop of FtsX and Its Interaction with the Essential Peptidoglycan Hydrolase PcsB in Streptococcus pneumoniae

scientific article published in 2019

Structure of the essential peptidoglycan amidotransferase MurT/GatD complex from Streptococcus pneumoniae

scientific article published in Nature Communications

The function of the transmembrane and cytoplasmic domains of pneumococcal penicillin-binding proteins 2x and 2b extends beyond that of simple anchoring devices

scientific article published in 2014

The gene encoding plantaricin A, a bacteriocin from Lactobacillus plantarum C11, is located on the same transcription unit as an agr-like regulatory system.

scientific article

The leader peptide of colicin V shares consensus sequences with leader peptides that are common among peptide bacteriocins produced by gram-positive bacteria

scientific article published in September 1994

The pneumococcal cell envelope stress-sensing system LiaFSR is activated by murein hydrolases and lipid II-interacting antibiotics.

scientific article published on 29 January 2010

Transformation and DNA repair: linkage by DNA recombination

scientific article published on January 2004

Two separate quorum-sensing systems upregulate transcription of the same ABC transporter in Streptococcus pneumoniae

scientific article published on May 2004

Two species of the phosphoprotein mRNA with differently edited reading frames discovered in measles virus infected Vero cells. Brief report

scientific article published in September 1989

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