The introduction of mutations in either of rtsAB contributed to reduced invasion gene expression in the these genes reduced hilA expression in both relA spoT strain , we examined the effects of both mutations relA spoT strains , indicating that the loss of hilA expression and overexpression of Lrp was not due to repression by these of a hilA-lacZ fusion in relA spoT strains .
The introduction of mutations in either of rtsAB contributed to reduced invasion gene expression in the these genes reduced hilA expression in both the wild type , we examined the effects of both mutations relA spoT strains , indicating that the loss of hilA expression and overexpression of Lrp was not due to repression by these of a hilA-lacZ fusion in the wild types .
Lrp tightly represses hilA expression .
It is possible that Lrp acts as a master repressor for the expression of hilA .