Streptococcus parasanguis sp. nov., an atypical viridans Streptococcus from human clinical specimens.
Molecular taxonomic studies were performed on ten strains of an unusual 'viridans streptococcus' that were originally isolated from human throats, blood and urine. On the basis of DNA-DNA hybridization studies the strains formed a single homology group distinct from all recognized species of oral and viridans streptococci. 16S ribosomal RNA reverse transcriptase sequence studies confirmed the genealogical distinctiveness of the human strains. The results of the present study clearly demonstrate that the human strains represent a new species of the viridans group for which the name Streptococcus parasanguis sp. nov. is proposed. The type strain is ATCC 15912.
Department of Oral Microbiology, London Hospital Medical College, U.K.
R A
RA
Whiley
H Y
HY
Fraser
C W
CW
Douglas
J M
JM
Hardie
A M
AM
Williams
M D
MD
Collins
D001483:Base Sequence; D004269:DNA, Bacterial / Q000235:genetics; D006801:Humans; D008969:Molecular Sequence Data; D012329:RNA, Bacterial / Q000235:genetics; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D012689:Sequence Homology, Nucleic Acid; D012703:Serotyping; D013291:Streptococcus / Q000145:classification* / Q000235:genetics
D004269:DNA, Bacterial; D012329:RNA, Bacterial; D012336:RNA, Ribosomal, 16S