FIG. 1.

Graphic illustration of the lisRK locus. (A) Line drawing of the orientation of ORFs flanking the Tn917 insertion site. The striped regions within lisK indicate the potential membrane-spanning regions, while the lollipops indicate putative rho-independent terminators. The 498-bp region deleted in the mutant LO28ΔlisK is also indicated. (B) Alignment of the predicted receiver domains of both lisR and csrR and the consensus sequence motif for the receiver element of response regulators (27). (C) Alignment of the predicted transmitter domain of both lisR and csrR and the consensus sequence motif for the transmitter element of histidine kinase sensor proteins (27). aa, amino acids.