1887

Abstract

Biochemical and molecular genetic studies were performed on an unknown Gram-stain-positive, catalase-negative, coccus-shaped organism isolated from clinical samples of a Pyrenean chamois. The micro-organism was identified as a streptococcal species based on its cellular morphological and biochemical tests. 16S rRNA gene sequence comparison studies confirmed its identification as a member of the genus , but the organism did not correspond to any species of this genus. The nearest phylogenetic relative of the unknown coccus from chamois was (95.9 % 16S rRNA gene sequence similarity). The and sequence analysis showed sequence similarity values of less than 85.7 % and 83.0 %, respectively, with the currently recognized species of the genus . The novel bacterial isolate was distinguished from and other species of the genus using biochemical tests. Based on both phenotypic and phylogenetic findings, it is proposed that the unknown bacterium be classified as a novel species of the genus , sp. nov., with the type strain 2777-2-07 ( = CECT 7718  = CCUG 59652).

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2011-08-01
2019-10-16
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Supplements

vol. , part 8, pp. 1989 - 1993

Characteristics differentiating sp. nov. from other species of the Lancefield group D.

Neighbour-joining tree based on 16S rRNA gene sequences showing the phylogenetic position of sp. nov., and other streptococcal reference species.

Partial neighbour-joining phylogenetic tree inferred from gene sequences showing the position of strain 2777-2-07 ( sp. nov.) and its closest phylogenetic neighbours.

Partial neighbour-joining phylogenetic tree inferred from gene sequences showing the position of strain 2777-2-07 ( sp. nov.) and its closest phylogenetic neighbours.



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