FIG 4.
SDP and LDP genes are reciprocally regulated by the transcription factor LsrB. (A) Northern blot analyses of SDP- and LDP-encoding genes in the WT and lsrB mutant. Ethidium bromide (EtBr)-stained 16S or 23S rRNA served as a loading control. (B) Putative LsrB-binding sites marked in red match the TGC-N7-GCA motif, and orange sequences display the shorter TGC-N6-GCA motif. Previously described binding sites of the three DUF1127 genes from B. abortus (bab1_0914, bab2_0514, and bab2_0574) are underlined. The position relative to the transcriptional start site (+1) is indicated.