FIG. 1.

(A) Organization of the M. extorquens AM1 phyR region. Genes are represented by large open arrows. Transcript start sites of phyR (RMQ08198), RMQ08196, and RMQ12794 were identified by RACE and are indicated by bent arrows. Putative signal peptides are represented by a zigzag symbol. Genes induced in the phyR-overexpressing strain are labeled with a plus sign at the 5 prime end. (B) Alignment of promoter regions. Conserved −35 and −10 elements are indicated by shading. Transcription start sites identified experimentally are in bold type and underlined. Distances to the start codon are indicated.