Figure 1.

Genetic map of plasmid pSB102. The 69 ORFs identified in the nucleotide sequence of plasmid pSB102 (Table 3) are located on a circular map. ORFs are shown as arrows. The numbers of the ORFs are given as the inner circle, the names of the putative genes are given as the outer circle. Putative promoters are indicated as black triangles on the inner circle. Different colors of the arrows indicate transfer genes with mating pair formation (Mpf) and DNA processing/transfer (Dtr) functions (light and deep green, respectively), genes encoding plasmid replication and maintenance (Rep and Mai) (yellow), Tn5718 encoded genes involved in mercury resistance and transposition (red and blue, respectively) as well as genes to which no similarities to database entries were detected (gray). Long DRs are indicated as light and dark brown rectangles, respectively. The putative origin of transfer (oriT) is shown as a filled circle.