Genetic map of the opp (Oligopeptide permease) locus of Salmonella typhimurium.
AUTOR(ES)
Higgins, C F
RESUMO
The uptake of peptides by Salmonella typhimurium is mediated by three apparently independent transport systems. One of these systems, the oligopeptide permease, is encoded by a genetic locus (opp) which has been mapped at 34 min on the S. typhimurium chromosomal map. We accurately mapped the location of opp by cotransduction frequencies and by deletion analysis and show that the gene order for this region of the chromosome is cysB-trp-tonB-opp-galU-tdk. All opp mutants, independently isolated by a variety of means, mapped at this one locus, between tonB and galU. Spontaneous and transposon Tn10-generated deletions were used to construct a fine-structure genetic map of opp. Evidence is presented which indicates that opp covers a 5- to 6-kb segment of DNA and is therefore likely to consist of more than one gene.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=221702Documentos Relacionados
- Genetic Organization of the Oligopeptide Permease (opp) Locus of Salmonella typhimurium and Escherichia coli
- Fine-structure genetic map of the cysB locus in Salmonella typhimurium.
- Fine-structure genetic map of the maltose transport operon of Salmonella typhimurium.
- Genetic characterization and molecular cloning of the tripeptide permease (tpp) genes of Salmonella typhimurium.
- Genetic characterization and regulation of the nadB locus of Salmonella typhimurium.
