Abstract
An unidentified strain of the viridans group of streptococci was isolated from a human blood sample. It was distinguished from all other recognized species of the Streptococcus sanguinis group by several biochemical characteristics. Phylogenetic analysis based on 16S rRNA gene sequence comparisons clustered this strain with Streptococcus ferus (mutans group) but phylogenetic analysis based on rpoB and sodA gene sequence comparisons included it in the S. sanguinis group. The isolate showed 95.4 and 95.2 % 16S rRNA gene sequence similarity to S. ferus and S. sanguinis, respectively, confirming it as belonging to a novel taxon, for which the name Streptococcus massiliensis sp. nov. is proposed. The type strain is 4401825T (=CIP 108498T=CCUG 49690T).
MeSH terms
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Bacterial Proteins / genetics
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Bacterial Typing Techniques
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Blood / microbiology*
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DNA, Bacterial / chemistry
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DNA, Bacterial / genetics
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DNA, Ribosomal / chemistry
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DNA, Ribosomal / genetics
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DNA-Directed RNA Polymerases / genetics
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Genes, rRNA
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Humans
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Male
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Middle Aged
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Molecular Sequence Data
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Phylogeny
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RNA, Bacterial / genetics
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RNA, Ribosomal, 16S / genetics
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Streptococcal Infections / microbiology*
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Superoxide Dismutase / genetics
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Viridans Streptococci / classification*
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Viridans Streptococci / genetics
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Viridans Streptococci / isolation & purification*
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Viridans Streptococci / physiology
Substances
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Bacterial Proteins
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DNA, Bacterial
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DNA, Ribosomal
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RNA, Bacterial
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RNA, Ribosomal, 16S
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SodA protein, Bacteria
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Superoxide Dismutase
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DNA-Directed RNA Polymerases
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RNA polymerase beta subunit
Associated data
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GENBANK/AY769997
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GENBANK/AY769998
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GENBANK/AY769999
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GENBANK/AY770000
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GENBANK/AY770001
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GENBANK/AY770002
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GENBANK/DQ132983
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GENBANK/DQ132984
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GENBANK/DQ132985
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GENBANK/DQ132986
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GENBANK/DQ132987
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GENBANK/DQ232458
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GENBANK/DQ232560