Fig. 1

Cluster and operon arrangement of the fla2 genes between motB2 and fliI2. Arrows indicate the direction of transcription. The name of the genes that are transcribed from left to right are indicated under the arrows, and the genes transcribed in the opposite direction are indicated above the arrows. The red lines indicate the regulatory regions analyzed in this work. For an easy identification, the arrows representing flgB2 and fliI2 are colored in violet and orange, respectively. In the cluster, motB2 encodes the motor protein B; flgE2, the hook protein; flgK2 and flgL2, the hook associated proteins 1 and 3, respectively; flgI2, the P-ring protein; RSP_1316 a putative histidine kinase; RSP_1318 a putative response regulator; fliP2 membrane component of the secretion apparatus; fliN2, a switch complex/secretion protein; fliH2, a soluble component of the secretion system; fliF2, the MS-ring protein; fliL2, a motor control protein; RSP_1414, RSP_1315, conserved hypothetical proteins; motA2, the stator protein A; RSP_1318, a conserved hypothetical protein; SltF, the flagellar soluble lytic transglycosylase (named before flgJB2); flhA2, fliR2, flhB2, membrane components of the secretion apparatus; RSP_6155, conserved hypothetical protein; RSP_1323 similar to FliL; flgH2, L-ring protein; flgA2, chaperone for P-ring formation; flgG2, distal rod protein; flgF2, rod protein; fliQ, membrane component of the secretion apparatus; fliE, periplasmic protein related with the secretion apparatus; flgC2, flgB2, proximal rod proteins; fliI2 cytoplasmic component of the secretion system, ATPase component; RSP_1333 putative secretion chaperone; flgJ2, cap rod protein