plcA insertion mutants of L. monocytogenes are clearly of reduced virulence (3, 38), but the polar effect of these mutations on the downstream regulatory gene prfA (39) (see below) makes a definitive assignment of a role for PI-PLC premature.
plcAinsertion mutants of L. monocytogenes are clearly of reducedvirulence (3, 38), but the polar effect of these mutationson the downstream regulatory gene prfA (39) (seebelow) makes a definitive assignment of a role for PI-PLCpremature.