Molecular and Chemotaxonomic Approaches to the Classification of Streptococci, Enterococci and Lactococci: A Review

Schleifer, Karl Heinz; Kilpper-Bälz, R.

doi:10.1016/s0723-2020(87)80002-4

Cited by 286 publications

(167 citation statements)

References 82 publications

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“…This is presumably because different parts of the 16S rRNA sequences and different methods for constructing the trees have been used. The genus Enterococcus groups with Bacillus, as in the work of Stackebrandt & Teuber (1988), whereas it groups with Streptococcus and Lactococcus in the work of Schleifer & Kilpper-Ba$ lz (1987) and Olsen et al (1994). The overall topology of the infB tree is equivalent to the 16S rRNA tree but supports the assumption that Enterococcus is closely related to the two other genera of Streptococci, Strepof 23 different characteristics.…”

Section: Resultsmentioning

confidence: 64%

Investigation of the translation-initiation factor IF2 gene, infB, as a tool to study the population structure of Streptococcus agalactiae The EMBL accession numbers for the sequences reported in this paper are AJ003164 and AJ251493 to AJ251499.

et al. 2000

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The sequence of infB, encoding the prokaryotic translation-initiation factor 2 (IF2), was determined in eight strains of Streptococcus agalactiae (group B streptococcus) and an alignment revealed limited intraspecies diversity within S. agalactiae. The amino acid sequence of IF2 from S. agalactiae and from related species were aligned and revealed an interspecies conserved central and C-terminal part, and an N-terminal part that is highly variable in length and amino acid sequence. The diversity and relationships in a collection of 58 genetically distinct strains of S. agalactiae were evaluated by comparing a partial sequence of infB. A total of six alleles were detected for the region of infB analysed. The alleles correlated with the separation of the same strains of S. agalactiae into major evolutionary lineages, as shown in previous work. The partial sequences of infB were furthermore used in phylogenetic analyses of species closely related to S. agalactiae, yielding an evolutionary tree which had a topology similar to a tree constructed using 16S rRNA sequences from the same species.

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Section: Resultsmentioning

confidence: 64%

Investigation of the translation-initiation factor IF2 gene, infB, as a tool to study the population structure of Streptococcus agalactiae The EMBL accession numbers for the sequences reported in this paper are AJ003164 and AJ251493 to AJ251499.

et al. 2000

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“…Previously, all streptococci of fecal origin that produce group D antigen were considered as enterococci (Hartman et al, 2001). Molecular biology studies (including oligonucleotide cataloging of 16S rRNA, DNA-DNA and DNA-rRNA hybridization), combined with physiological studies showed more detailed classification (Schleifer and Kilpper-Bälz, 1987). Members of this genus are: E. avium, E.…”

Section: Introductionmentioning

confidence: 99%

MOLECULAR IDENTIFICATION AND ANTIBIOGRAM OF Enterococcus spp. ISOLATED ON ENTEROCOCCUS SELECTIVE DIFFERENTIAL (ESD) MEDIA FROM MEAT, MEAT PRODUCTS AND SEAFOOD IN LIBYA

Naas¹,

Almajdoubi²,

Garbaj³

et al. 2017

J microb biotech food sci

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“…Group E carbohydrate antigen consists of a poly-L-rhamnose backbone of alternating 0-2-and 0-3-linked rhamnose units with immunodominent terminal fl-D-glucopyranosyl groups. Rhamnose also contributes to the immunodominant structure of group B and G streptococci which may explain the occasional serological cross-reactions that occur between these groups [42]. The diversity of Lancefield antigens found in S aberis may reflect only very slight differences in configuration of the carbohydrate epitopes.…”

Section: Discussionmentioning

confidence: 99%

Antigenic and genetic homogeneity ofStreptococcus uberisstrains from the bovine udder

1991

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SUMMARYDNA-fingerprints (Hind III) of Streptococcus uberis field isolates from New York State and Europe showed substantial homogeneity, but were different to those of the type strain of the newly proposed psychrophilic species S. parauberis. S. uberis strains had major SDS-heat extracted antigens of molecular masses (Mr) < 14, 40-41, 42-43, 59-61, 80-86 and 118-122 kDa following immunoblotting with rabbit hyperimmune sera. Bovine sera and milk reacted with the 40-41 and 118-122 kDa antigens. Variations in the Mr of particular bands were too unevenly distributed to permit formation of subgroups. Although cross reactive, the sizes of the antigens of S. parauberis strain NCDO 2020 were substantially different to those of S. uberis, the most prominent antigen having a Mr of 50 kDa. The antigenic and genetic data therefore strongly support the introduction of S. parauberis as a distinct species. S. uberis strains reacted with antiserum to Lancefield groups B. E, G and P, their grouping reactions showing no correlation with DNA and immunoblot fingerprints. Lancefield grouping of S. uberis therefore appears to have little value in identification.

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Molecular and Chemotaxonomic Approaches to the Classification of Streptococci, Enterococci and Lactococci: A Review

Cited by 286 publications

References 82 publications

Investigation of the translation-initiation factor IF2 gene, infB, as a tool to study the population structure of Streptococcus agalactiae The EMBL accession numbers for the sequences reported in this paper are AJ003164 and AJ251493 to AJ251499.

Investigation of the translation-initiation factor IF2 gene, infB, as a tool to study the population structure of Streptococcus agalactiae The EMBL accession numbers for the sequences reported in this paper are AJ003164 and AJ251493 to AJ251499.

MOLECULAR IDENTIFICATION AND ANTIBIOGRAM OF Enterococcus spp. ISOLATED ON ENTEROCOCCUS SELECTIVE DIFFERENTIAL (ESD) MEDIA FROM MEAT, MEAT PRODUCTS AND SEAFOOD IN LIBYA

Antigenic and genetic homogeneity ofStreptococcus uberisstrains from the bovine udder

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