Claveliimonas
Claveliimonas is a genus of obligately anaerobic, Gram-positive, non-spore-forming, non-motile, rod-shaped bacteria in the family Lachnospiraceae. The type species is Claveliimonas bilis.
Taxonomy
The generic name combines the surname of the German microbiologist Thomas Clavel with the Neo-Latin noun monas, meaning a unit or monad. The name recognizes his contributions to gastrointestinal microbiology and bacterial taxonomy.
Claveliimonas monacensis was formerly classified as Sellimonas monacensis. Analyses of its 16S rRNA gene and genome placed it apart from other species of Sellimonas and supported its transfer to Claveliimonas.
Characteristics
Members of the genus ferment D-glucose, producing mainly acetate, lactate, and propionate, with smaller amounts of formate.
Studied isolates of C. bilis grew at temperatures of 30–45 °C, with optimal growth at 37 °C, and at pH values of 4.5–7.0. Their cells occurred singly or in short chains. The genomes contained a bile acid-inducible (bai) gene cluster involved in bile-acid 7α-dehydroxylation. Two isolates converted cholic acid to deoxycholic acid and 7-oxo-deoxycholic acid, whereas the type strain produced 7-oxo-deoxycholic acid with deoxycholic acid below the detection threshold.
Ecology
Strains of C. bilis, including its type strain, were isolated from fecal samples obtained from healthy Japanese adults. The type strain of C. monacensis was isolated from the cecal contents of a layer chicken sampled in Munich, Germany.
Species
The genus contains two species with validly published and correct names:
- Claveliimonas bilis
- Claveliimonas monacensis