PENICILLIN RESISTANCE AND AUTOLYSIS IN ENTEROCOCCI

Comparison of several cell wall-related properties of the ATCC 9790 st rain and the R40 strain, a penicillin-resistant, PBP5 overproducing st rain, and Rev14, a penicillin-hypersensitive, PBP5-deficient strain, i s consistent with a role of the genetic element, psr, in the global re gulation of lysozyme sensitivity, autolytic capacity, and wall-rhamnos e-containing polysaccharide content, These parameters appear to be ind ependently regulated by a system that involves psr in a currently unkn own manner.