has unique phenotypic characters within the genus . The 16S rRNA sequence of was determined and its phylogenetic position was defined. This micro-organism is a member of the genus but it is not closely related to , the type species of the genus , and is nearer to and . A PCR-based identification systen using species-specific primers designed on the basis of DNA sequences encoding the 16S rRNA of strains of and is described. A species-specific primer set can distinguish from or closely related species including and species. This species-specific PCR method can be used to identify -like species isolated from human faeces. On the basis of the 16S rRNA sequence divergence from and and the presence of unique phenotypic characters, a new genus, gen. nov., is proposed for , with one species, comb. nov. The type strain of is JCM 9979.


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