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A family of anti-Bacteroidales peptide toxins wide-spread in the human gut microbiota.


ABSTRACT: Bacteria often produce antimicrobial toxins to compete in microbial communities. Here we identify a family of broad-spectrum peptide toxins, named bacteroidetocins, produced by Bacteroidetes species. We study this toxin family using phenotypic, mutational, bioinformatic, and human metagenomic analyses. Bacteroidetocins are related to class IIa bacteriocins of Gram-positive bacteria and kill members of the Bacteroidetes phylum, including Bacteroides, Parabacteroides, and Prevotella gut species, as well as pathogenic Prevotella species. The bacteroidetocin biosynthesis genes are found in horizontally acquired mobile elements, which likely allow dissemination within the gut microbiota and may explain their wide distribution in human populations. Bacteroidetocins may have potential applications in microbiome engineering and as therapeutics for polymicrobial diseases such as bacterial vaginosis and periodontal disease.

SUBMITTER: Coyne MJ 

PROVIDER: S-EPMC6671954 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature

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A family of anti-Bacteroidales peptide toxins wide-spread in the human gut microbiota.

Coyne Michael J MJ   Béchon Nathalie N   Matano Leigh M LM   McEneany Valentina Laclare VL   Chatzidaki-Livanis Maria M   Comstock Laurie E LE  

Nature communications 20190801 1


Bacteria often produce antimicrobial toxins to compete in microbial communities. Here we identify a family of broad-spectrum peptide toxins, named bacteroidetocins, produced by Bacteroidetes species. We study this toxin family using phenotypic, mutational, bioinformatic, and human metagenomic analyses. Bacteroidetocins are related to class IIa bacteriocins of Gram-positive bacteria and kill members of the Bacteroidetes phylum, including Bacteroides, Parabacteroides, and Prevotella gut species, a  ...[more]

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