Abstract
A novel Gram-negative, obligately anaerobic, non-motile, non-spore forming, and rod-shaped bacterium, designated strain JS262T, was isolated from human subgingival plaque of periodontitis lesion and was characterized by polyphasic taxonomic analysis. Comparison of 16S ribosomal RNA gene (16S rDNA) sequence revealed that the strain belonged to the genus Prevotella. The percent similarity of 16S rDNA of strain JS262T was closest to those of Prevotella buccae ATCC 33574T (89.1%) and Prevotella shahii JCM 12083T (88.9%). The major fatty acids of strain JS262T were C16:0 (29.2%), iso-C15:0 (19.2%), and anteiso-C15:0 (16.9%). Complete genome of strain JS262T was 2,691,540bp in length and the G+C content was 43.9mol%. Average nucleotide identity and genome-to-genome distance values between strain JS262T and P. buccae ATCC 33574T or P. loescheii DSM 19665T were > 70.4% and > 30.1%, respectively. On the basis of these data, a novel Prevotella species is proposed: Prevotella koreensis sp. nov. The type strain of P. koreensis is JS262T (= KCOM 3155T = JCM 33298T).
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