title: New serotype of mutans streptococci isolated from pig oral cavity.
abstract: Gram-positive streptococcal mutans-like strains, but with clearly different colony formation than S. orisuis on Mitis Salivarius agar, were isolated from the pig oral cavity and identified by 16S rRNA sequencing, G+C content, DNA-DNA homology and extensive biochemical and serological testing. The phenotypic data showed that the strains were similar to S. orisuis except for susceptibility to bacitracin. DNA-DNA homology between the isolates and S. orisuis was 72~81%. However, serological data showed that they have a different sero-specific antigen from S. orisuis and other mutans streptococci. A new serotype, designated p, strains are classified in a serovar of S. orisuis, one of mutans streptococci.
authors.affiliation: Department of Microbiology and Immunology, Nihon University School of Dentistry at Matsudo, Matsudo, Chiba, Japan.
authors.forename: Kazuko
authors.initials: K
authors.lastname: Takada
authors.forename: Mitsuhiko
authors.initials: M
authors.lastname: Igarashi
authors.forename: Yasutaka
authors.initials: Y
authors.lastname: Yamaguchi
authors.forename: Masatomo
authors.initials: M
authors.lastname: Hirasawa
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000494:pharmacology; D001414:Bacitracin / Q000494:pharmacology; D015373:Bacterial Typing Techniques; D001482:Base Composition; D004269:DNA, Bacterial / Q000737:chemistry / Q000235:genetics; D004275:DNA, Ribosomal / Q000737:chemistry / Q000235:genetics; D020459:Genes, rRNA; D008969:Molecular Sequence Data; D009055:Mouth / Q000382:microbiology*; D009693:Nucleic Acid Hybridization; D010802:Phylogeny; D012329:RNA, Bacterial / Q000235:genetics; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D017422:Sequence Analysis, DNA; D012689:Sequence Homology, Nucleic Acid; D012703:Serotyping; D013295:Streptococcus mutans / Q000145:classification* / Q000302:isolation & purification*; D013552:Swine / Q000382:microbiology*
chemical_list: D000900:Anti-Bacterial Agents; D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D012329:RNA, Bacterial; D012336:RNA, Ribosomal, 16S; D001414:Bacitracin