Coprococcus

Co'pro.coc'cus. Gr. n. kopros feces; Gr. n. kokkos berry; N.L. masc. n. Coprococcus fecal coccus. Firmicutes / “Clostridia” / Clostridiales / “Lachnospiraceae” / Coprococcus Cocci that are Gram‐stain‐positive , nonmotile, and obligately anaerobic chemoorganotrophs . All species in the genus are isolated from human feces (Moore and Holdeman, 1974) but rarely isolated from human clinical specimens. Strains were originally isolated on an anaerobically sterilized rumen‐fluid‐glucose‐cellobiose agar (Holdeman et al., 1977a) roll tube. However, pure cultured strains grow on anaerobically incubated blood agar plates (supplemented with brain heart infusion agar with 5% sheep blood). Cells may occur as pairs or chains of pairs. Cells of the some species are slightly elongated, in particular, when grown in medium containing fermentable carbohydrates. Fermentable carbohydrates are either required or are highly stimulatory for growth . Major fermentation products include butyric and acetic acids , with formic or propionic acid . Characteristics to differentiate species of the genus Coprococcus and biochemically closely related species of the Ruminococcus are given in Table 167. The genus phylogenetically belongs to family Lachnospiraceae and the phylogenetic position within the family is shown in Figure 1 (Ezaki et al., 1994; Rainey and Janssen, 1995; Willems and Collins, 1995a). In the family Lachnospiraceae , members of genus Coprococcus are phylogenetically closely related to anaerobic curved bacteria, genus Lachnospira as in Figure 1. DNA G + C content ( mol %): 39–42. Type species : Coprococcus eutactus Holdeman and Moore 1974, 261 AL .