Six strains of a hitherto undescribed gram-positive, catalase-negative, facultatively anaerobic coccus from human sources were characterized by phenotypic and molecular taxonomic methods. Comparative 16S rRNA gene sequencing studies demonstrated that the unknown strains were genealogically homogeneous and constitute a new line closely related to, but distinct from, the genus . The unknown bacterium was readily distinguished from , the type species of the genus , by the results of biochemical tests and an electrophoretic analysis of whole-cell proteins. Based on phylogenetic and phenotypic evidence, we propose that the unknown bacterium be classified as gen. nov., sp. nov. The type strain of is CCUG 36813.


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