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Nat Microbiol. 2017 Apr 25;2:17026. doi: 10.1038/nmicrobiol.2017.26.

An insider's perspective: Bacteroides as a window into the microbiome.

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Department of Microbial Pathogenesis, Yale University School of Medicine, New Haven, Connecticut 06510, USA.
Microbial Sciences Institute, Yale University School of Medicine, West Haven, Connecticut 06516, USA.


Over the last decade, our appreciation for the contribution of resident gut microorganisms-the gut microbiota-to human health has surged. However, progress is limited by the sheer diversity and complexity of these microbial communities. Compounding the challenge, the majority of our commensal microorganisms are not close relatives of Escherichia coli or other model organisms and have eluded culturing and manipulation in the laboratory. In this Review, we discuss how over a century of study of the readily cultured, genetically tractable human gut Bacteroides has revealed important insights into the biochemistry, genomics and ecology that make a gut bacterium a gut bacterium. While genome and metagenome sequences are being produced at breakneck speed, the Bacteroides provide a significant 'jump-start' on uncovering the guiding principles that govern microbiota-host and inter-bacterial associations in the gut that will probably extend to many other members of this ecosystem.

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