Enterorhabdus caecimuris sp. nov., a member of the family Coriobacteriaceae isolated from a mouse model of spontaneous colitis, and emended description of the genus Enterorhabdus Clavel et al. 2009

The C3H/HeJBir mouse model of intestinal inflammation was used for isolation of a Grampositive, rod-shaped, non-spore-forming bacterium (B7 ^T) from caecal suspensions. On the basis of partial 16S rRNA gene sequence analysis, strain B7^T was a member of the class Actinobacteria, family Coriobacteriaceae, and was related closely to Enterorhabdus mucosicola Mt1B8^T (97.6 %). The major fatty acid of strain B7^T was C_{16 : 0} (19.1 %) and the respiratory quinones were mono- and dimethylated. Cells were aerotolerant, but grew only under anoxic conditions. Strain B7^T did not convert the isoflavone daidzein and was resistant to cefotaxime. The results of DNA-DNA hybridization experiments and additional physiological and biochemical tests allowed the genotypic and phenotypic differentiation of strain B7^T from the type strain of E. mucosicola. Therefore, strain B7^T represents a novel species, for which the name Enterorhabdus caecimuris sp. nov. is proposed. The type strain is B7^T (=DSM 21839^T =CCUG 56815^T).