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2014 ; 158
(6
): 1402-1414
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A systematic analysis of biosynthetic gene clusters in the human microbiome
reveals a common family of antibiotics
#MMPMID25215495
Donia MS
; Cimermancic P
; Schulze CJ
; Wieland Brown LC
; Martin J
; Mitreva M
; Clardy J
; Linington RG
; Fischbach MA
Cell
2014[Sep]; 158
(6
): 1402-1414
PMID25215495
show ga
In complex biological systems, small molecules often mediate microbe-microbe and
microbe-host interactions. Using a systematic approach, we identified 3,118
small-molecule biosynthetic gene clusters (BGCs) in genomes of human-associated
bacteria and studied their representation in 752 metagenomic samples from the NIH
Human Microbiome Project. Remarkably, we discovered that BGCs for a class
of antibiotics in clinical trials, thiopeptides, are widely distributed in
genomes and metagenomes of the human microbiota. We purified and solved the
structure of a thiopeptide antibiotic, lactocillin, from a prominent member of
the vaginal microbiota. We demonstrate that lactocillin has potent antibacterial
activity against a range of Gram-positive vaginal pathogens, and we show that
lactocillin and other thiopeptide BGCs are expressed in vivo by analyzing human
metatranscriptomic sequencing data. Our findings illustrate the widespread
distribution of small-molecule-encoding BGCs in the human microbiome, and they
demonstrate the bacterial production of drug-like molecules in humans. PAPERCLIP: