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The C3H/HeJBir mouse model of intestinal inflammation was used for isolation of a Gram-positive, rod-shaped, non-spore-forming bacterium (B7T) from caecal suspensions. On the basis of partial 16S rRNA gene sequence analysis, strain B7T was a member of the class Actinobacteria, family Coriobacteriaceae, and was related closely to Enterorhabdus mucosicola Mt1B8T (97.6 %). The major fatty acid of strain B7T was C16 : 0 (19.1 %) and the respiratory quinones were mono- and dimethylated. Cells were aerotolerant, but grew only under anoxic conditions. Strain B7T 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 B7T from the type strain of E. mucosicola. Therefore, strain B7T represents a novel species, for which the name Enterorhabdus caecimuris sp. nov. is proposed. The type strain is B7T (=DSM 21839T =CCUG 56815T).
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International Journal of Systematic and Evolutionary Microbiology vol. 60 , part 7, pp. 1527–1531
Supplementary Fig. S1. Comparative polar lipid analysis of (a) strain B7 Tand (b) Enterorhabdus mucosicola DSM 19490 T.
Supplementary Fig. S2. Reversed-phase HPLC analysis of daidzein and equol concentrations.
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