DNA-DNA reassociation studies of Streptococcus constellatus with unusual 16S rRNA sequences.

DNA-DNA reassociation studies were performed on previously described 'CI strains', which form an unusual 16S rRNA population within the 'anginosus' group of Streptococcus. The CI strains displayed reassociation values of >70% with the Streptococcus constellatus NCDO 2226T strain, with Tm values <1 degrees C, indicating phylogenetic species identity.