title: Horizontal spread of an altered penicillin-binding protein 2B gene between Streptococcus pneumoniae and Streptococcus oralis.
abstract: The region encoding the transpeptidase domain of the penicillin-binding protein 2B (PBP 2B) gene of two penicillin-resistant clinical isolates of Streptococcus oralis was > 99.6% identical in nucleotide sequence to that of a penicillin-resistant serotype 6 isolate of Streptococcus pneumoniae. The downstream 849 base pairs of these genes were identical. Analysis of the data indicates that the PBP gene has probably been transferred from S. pneumoniae into S. oralis, rather than vice versa, and shows that one region of this resistance gene has been distributed horizontally both within S. pneumoniae and into two different viridans group streptococci.
authors.affiliation: Microbial Genetics Group, School of Biological Sciences, University of Sussex, Brighton, UK.
authors.forename: T J
authors.initials: TJ
authors.lastname: Coffey
authors.forename: C G
authors.initials: CG
authors.lastname: Dowson
authors.forename: M
authors.initials: M
authors.lastname: Daniels
authors.forename: B G
authors.initials: BG
authors.lastname: Spratt
mesh_terms: D000595:Amino Acid Sequence; D001426:Bacterial Proteins; D001483:Base Sequence; D002352:Carrier Proteins / Q000235:genetics*; D005798:Genes, Bacterial / Q000235:genetics*; D006602:Hexosyltransferases; D008969:Molecular Sequence Data; D002267:Muramoylpentapeptide Carboxypeptidase / Q000235:genetics*; D010403:Penicillin Resistance / Q000235:genetics*; D046915:Penicillin-Binding Proteins; D010458:Peptidyl Transferases; D012689:Sequence Homology, Nucleic Acid; D013291:Streptococcus / Q000235:genetics*; D013296:Streptococcus pneumoniae / Q000235:genetics; D014170:Transformation, Genetic
chemical_list: D001426:Bacterial Proteins; D002352:Carrier Proteins; D046915:Penicillin-Binding Proteins; D010458:Peptidyl Transferases; D006602:Hexosyltransferases; D002267:Muramoylpentapeptide Carboxypeptidase