FIG. 1.

Organization of genes for mobilization and of oriT in plasmid R1162 and locations of different in-frame deletions. The genes mobA and mobB overlap in separate reading frames. The carboxy-terminal domain of mobA is termed repB′ and encodes a primase that is also translated separately (29). Initiation and termination sites for translation are indicated by open triangles and rectangles, respectively. The locations of the promoters p1 to p3 (29) are shown, with the direction of transcription from each indicated by the arrowheads. The base pair coordinates are distances from the unique EcoRI site in R1162.