Faecalibacterium prausnitzii
species of bacterium
Faecalibacterium prausnitzii is a non-spore-forming, non-motile, rod-shaped, anaerobic, Gram-positive bacteria species of the genus Faecalibacterium. It is the single most abundant bacteria in the human gut and is the major butyric acid (butyrate)-producing species in the gut.
Biology
Occurrence
F. prausnitzii is found in the human gut and is the most abundant single bacteria species in the human gut microbiota, making up approximately 5% of the total bacterial population in healthy adults. However, F. prausnitzii can make up as much as 15% of the bacterial population in some people. Many different strains of F. prausnitzii with varying properties are known and have been studied. F. prausnitzii is ubiquitous in humans, detectable in over 85% of individuals.
F. prausnitzii is an extremely oxygen-sensitive bacteria and is difficult to cultivate even under oxygen-free conditions. However, advances have been made in the cultivation of F. prausnitzii.
Metabolism
The end products of glucose fermentation by F. prausnitzii include acetate (acetic acid), formate, small amounts of D-lactate, and substantial amounts of butyrate (butyric acid). It also consumes acetate and lactate and forms butyrate from them.
“Faecalibacterium prausnitzii” enters the record as species of bacterium. Crown Archives preserves that source wording while asking what Faecalibacterium, prausnitzii and species can confirm, complicate or overturn.
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The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated Sep 14, 2026. The linked authority identifier is Q3738296. None of the 0 selected statements returned an explicit reference.
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This entry incorporates text from “Faecalibacterium prausnitzii” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.