FIG. 1.

Map of the whole pKDSC50 plasmid. The circle shows ORFs with their orientations denoted by their positions; ORFs outside the ring have a clockwise orientation: and those inside the ring have a counterclockwise orientation. ORFs encoding virulence-associated factors are indicated by red boxes; ORFs encoding proteins related to replication and plasmid maintenance functions are indicated by blue boxes; ORFs encoding proteins homologous to the tra operon are indicated by green boxes; and the IS element is indicated by a yellow box. For the nomenclature of the ORFs, see Table 3.