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Uncultured bacterium

ABSTRACT: uncultured bacteria pyrosequencing (nifH and 16S rRNA) of coral A.millepora early stages

PROVIDER: PRJNA218572 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR977958.fastq.gz	Fastqsanger.gz
	SRR978403.fastq.gz	Fastqsanger.gz

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A new antibiotic from an uncultured bacterium binds to an immutable target

Project description:Antimicrobial resistance is a leading mortality factor worldwide. Here we report the discovery of clovibactin, a new antibiotic, isolated from uncultured soil bacteria. Clovibactin efficiently kills drug-resistant Gram-positivebacterial pathogens without detectable resistance. Using biochemical assays,solid-state NMR, and atomic force microscopy, we dissect its mode of action. Clovibactin blocks cell wall synthesis by targeting pyrophosphate of multiple essential peptidoglycan precursors (C55PP, Lipid II, LipidWTA). Clovibactin uses anunusual hydrophobic interface to tightly wrap aroundpyrophosphate, butbypasses the variable structural elements of precursors, accounting for the lack of resistance. Selective and efficient target binding is achieved by the sequestration of precursors into supramolecular fibrils that only form on bacterial membranes that contain lipid-anchored pyrophosphate groups.Uncultured bacteria offer a rich reservoir of antibiotics with new mechanisms of action that could replenish the antimicrobial discovery pipeline.

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