Chromosomal Location of Host Specificity in Salmonella typhimurium

Chromosomal location of host specificity in Salmonella typhimurium.

A new Salmonella typhimurium DNA host specificity.

The genetic properties of a new (hspS) host specificity of Salmonella typhimurium were investigated using bacteriophage L. Phage L is a better substrate for s-specific restriction than phage P22. Mutants deficient in s-restriction only were found at the same frequency as mutants deficient in both restriction and modification. Crosses between S. typhimurium Hfr and S. typhimurium For between Esc...

Evidence for chromosomal and plasmid location of CMY-2 cephalosporinase gene in Salmonella serotype Typhimurium.

Sir, Resistance to extended-spectrum cephalosporins has emerged among non-typhoid salmonellae (NTS) worldwide due to acquisition of plasmid-mediated b-lactamases including CMY-2. The isolation frequency of CMY-2-producing NTS in the USA has gradually increased since 1996 reflecting the widespread transmission of CMY-2-positive NTS among food animal reservoirs. The blaCMY-2 gene has been dissemi...

Nucleoside diphosphate sugar hydrolase gene of Salmonella typhimurium: chromosomal location determined by intergeneric crosses.

The gene specifying a membrane-bound nucleoside diphosphate sugar hydrolase of Salmonella typhimurium was mapped near the metA locus by using intergeneric crosses between this bacterium and Escherichia coli.

Salmonella typhimurium interations with host cells

S. typhimurium is capable of entering into phagocytic and nonphagocytic cells and functiorting as an intracellular pathogen. During invasion of epithelial cells, S. typhimurium causes membrane rffiing and actin rearrangement as it enters. It thetx targets to a specialized vacuole where it replicates. Associated with replication is the ind.uction of a unique host filamentous structure. Isolation...