FIG 1.

(A) Schematic diagram of LytTR-containing two-component system transcriptional regulator proteins. Numbers above the diagram correspond to the amino acid positions. The percent identity of the primary amino acid sequences of the Rr2 and RgfA REC and LytTR domains to LtdR is indicated. (B) Schematic of the ltdR-, Rr2-, and rgfA-containing gene loci. Gene locus tags published in the NCBI reference sequence with GenBank accession number NZ_HG939456.1 are indicated above the gene annotations.