title: Streptococcus entericus sp. nov., isolated from cattle intestine.
abstract: Biochemical, molecular chemical and molecular genetic studies were performed on an unknown gram-positive, catalase-negative, coccus-shaped organism isolated from the intestine of a cow affected with catarrhal enteritis. The organism was tentatively identified as a streptococcal species based on results of cellular morphological and biochemical tests. 16S rRNA gene sequencing studies confirmed its provisional identification as a member of the genus Streptococcus, but the organism did not correspond to any recognized species of this genus. The nearest phylogenetic relatives of the unknown coccus from a calf were Streptococcus acidominimus and Streptococcus suis. The unknown bacterium, however, was distinguished from these species and other animal streptococci by biochemical tests and electrophoretic analysis of whole-cell proteins. Based on both phenotypic and phylogenetic findings, it is proposed that the unknown bacterium be classified as a novel species of the genus Streptococcus, Streptococcus entericus sp. nov. The type strain is CECT 5353T (= CCUG 44616T).
authors.affiliation: Departamento de Patología Animal I (Sanidad Animal), Facultad de Veterinaria, Universidad Complutense, Madrid, Spain.
authors.forename: A I
authors.initials: AI
authors.lastname: Vela
authors.forename: E
authors.initials: E
authors.lastname: Fernández
authors.forename: P A
authors.initials: PA
authors.lastname: Lawson
authors.forename: M V
authors.initials: MV
authors.lastname: Latre
authors.forename: E
authors.initials: E
authors.lastname: Falsen
authors.forename: L
authors.initials: L
authors.lastname: Domínguez
authors.forename: M D
authors.initials: MD
authors.lastname: Collins
authors.forename: J F
authors.initials: JF
authors.lastname: Fernández-Garayzábal
mesh_terms: D000818:Animals; D000833:Animals, Suckling; D002417:Cattle; D002418:Cattle Diseases / Q000382:microbiology*; D003967:Diarrhea / Q000382:microbiology / Q000662:veterinary*; D020459:Genes, rRNA; D008969:Molecular Sequence Data; D010802:Phylogeny; D012329:RNA, Bacterial / Q000737:chemistry; D012336:RNA, Ribosomal, 16S / Q000737:chemistry; D013045:Species Specificity; D013290:Streptococcal Infections / Q000382:microbiology / Q000662:veterinary*; D013291:Streptococcus / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification
chemical_list: D012329:RNA, Bacterial; D012336:RNA, Ribosomal, 16S