A Gram-negative bacterium, designated strain LMG 22510, was isolated from water of a pharmaceutical company steam generator. The cells had a ring-like and horseshoe-shaped morphology and possessed gliding motility. Phylogenetic analysis of the 16S rRNA gene sequence showed that the strain was a member of the group within the phylum ‘’; its nearest neighbour was (88·8 % sequence similarity). DNA base content, fatty acid composition and biochemical characteristics were determined. Genotypic and phenotypic data indicated that strain LMG 22510 could not be assigned to any recognized genus; therefore, a novel genus and species is proposed, gen. nov., sp. nov., with LMG 22510 (=NCIMB 14103) as the type strain.


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