Production of butyrate from lysine and the Amadori product fructoselysine by a human gut commensal.

Abstract:

:Human intestinal bacteria produce butyrate, which has signalling properties and can be used as energy source by enterocytes thus influencing colonic health. However, the pathways and the identity of bacteria involved in this process remain unclear. Here we describe the isolation from the human intestine of Intestinimonas strain AF211, a bacterium that can convert lysine stoichiometrically into butyrate and acetate when grown in a synthetic medium. Intestinimonas AF211 also converts the Amadori product fructoselysine, which is abundantly formed in heated foods via the Maillard reaction, into butyrate. The butyrogenic pathway includes a specific CoA transferase that is overproduced during growth on lysine. Bacteria related to Intestinimonas AF211 as well as the genetic coding capacity for fructoselysine conversion are abundantly present in colonic samples from some healthy human subjects. Our results indicate that protein can serve as a source of butyrate in the human colon, and its conversion by Intestinimonas AF211 and related butyrogens may protect the host from the undesired side effects of Amadori reaction products.

journal_name

Nat Commun

journal_title

Nature communications

authors

Bui TP,Ritari J,Boeren S,de Waard P,Plugge CM,de Vos WM

doi

10.1038/ncomms10062

subject

Has Abstract

pub_date

2015-12-01 00:00:00

pages

10062

issn

2041-1723

pii

ncomms10062

journal_volume

6

pub_type

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