Lactococcal bacteriocins - mode of action and immunity
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TLDR
The lactococcal bacteriocins are hydrophobic cationic peptides, which form pores in the cytoplasmic membrane of sensitive cells.About:
This article is published in Trends in Microbiology.The article was published on 1995-08-01 and is currently open access. It has received 78 citations till now. The article focuses on the topics: Bacteriocin & Antimicrobial peptides.read more
Citations
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Cloning and expression in Escherichia coli of genetic determinants for production of and immunity to microcin E492 from Klebsiella pneumoniae.
TL;DR: The genetic determinants for microcin synthesis and immunity were cloned in Escherichia coli VCS257 into the cosmid vector pHC79, and the immunity determinant was subcloned into the same vector, and its expression was found to disappear in the stationary phase.
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A ‘bacteriocin PCR array’ for identification of bacteriocin-related structural genes in lactic acid bacteria
Sunita Macwana,Peter M. Muriana +1 more
TL;DR: DNA sequence homology at the 5'- and 3'-ends of the various structural genes indicated that non-specific priming may allow PCR amplification of heterologous bacteriocin genes.
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σB and σL Contribute to Listeria monocytogenes 10403S Response to the Antimicrobial Peptides SdpC and Nisin
TL;DR: Results from phenotypic characterization of a L. monocytogenes lmo2570 null mutant suggested that this gene does not contribute to resistance to nisin or to SdpC, an antimicrobial peptide produced by some strains of Bacillus subtilis.
References
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Genetics of bacteriocins produced by lactic acid bacteria
TL;DR: The biochemical and genetic characteristics of these antimicrobial proteins are reviewed and common elements are discussed between the different classes of bacteriocins produced by these Gram-positive bacteria.
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Bacteriocins of lactic acid bacteria
TL;DR: The range of inhibitory activity by bacteriocins of lactic acid bacteria can be either narrow, inhibiting only those strains that are closely related to the producer organism, or wide, inhibited a diverse group of Gram-positive microorganisms as mentioned in this paper.
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Nisin treatment for inactivation of Salmonella species and other gram-negative bacteria.
TL;DR: It is demonstrated that nisin is bactericidal to Salmonella species and that the observed inactivation can be demonstrated in other gram-negative bacteria.
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Characterization of the nisin gene cluster nisABTCIPR of Lactococcus lactis. Requirement of expression of the nisA and nisI genes for development of immunity
TL;DR: Transcription analyses of several L. lactis strains indicated that an expression product of the nisA gene, together with NisR, is required for the activation of nisinA transcription, indicating that NisI plays a role in the immunity mechanism.
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Mode of action of the peptide antibiotic nisin and influence on the membrane potential of whole cells and on cytoplasmic and artificial membrane vesicles
E Ruhr,Hans-Georg Sahl +1 more
TL;DR: The data suggest that the cytoplasmic membrane is the primary target and that membrane disruption accounts for the bactericidal action of nisin.