Isolation, characterization, and heterologous expression of the novel lantibiotic epicidin 280 and analysis of its biosynthetic gene cluster

Article Abstract:

Epicidin 280, a lantibiotic produced by Staphylococcus epidermidis and related to the lantibiotic Pep5, was isolated and characterized and its biosynthetic gene cluster was analyzed. A putative oxidoreductase gene was identified in the gene cluster and was found to be capable of reducing an N-terminal oxopropionyl residue in epicidin 280. Results demonstrate that epicidin 280 generated by the heterologous host Staphylococcus carnosus behaved homogeneously during reverse-phase chromatography.

Author: Jung, Gunther, Bierbaum, Gabriele, Jack, Ralph W., Pag, Ulrike, Sahl, Hans-Georg, Metzger, Jorg, Josten, Michaele, Heidrich, Christoph
Enzyme inhibitors

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Molecular analysis of expression of the lantibiotic Pep5 immunity phenotype

Article Abstract:

Research was conducted to examine the molecular characterization of the Pep5 immunity system. The immunity gene pepI was localized upstream of the structural gene pepA. The tight coupling of the immunity phenotype and Pep5 production was observed. Results based on Western blot analysis suggest that F13D PepI and PepI 1-65 were not produced correctly or were partially degraded while I17R PepI was found to be less efficient in offering self-protection than the wild-type PepI.

Author: Bierbaum, Gabriele, Pag, Ulrike, Sahl, Hans-Georg, Heidrich, Christoph
Phenotype, Phenotypes, Mutagenesis, Immunogenetics

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Localization and functional analysis of PepI, the immunity peptide of Pep5-producing staphylococcus epidermidis strain 5

Article Abstract:

Pep5 is a lantibiotic, a subgroup of bacteriocins from gram-positive bacteria, is produced by staphyococcus epidermidis strain 5. In the experiment conducted the immunity peptide of Pep5 is examined and analysis of PepI is made.

Author: Hoffmann, Anja, Schneider, Tanja, Pag, Ulrike, Sahl, Hans-Georg
Science & research, Gram-positive bacteria

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Subjects list: Research, Peptides, Peptide synthesis, Staphylococcus
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