Figure 7.

Genetic organization of plasmid pSB102 and pXF51 encoded genes involved in plasmid transfer and maintenance. ORFs are shown as arrows. Related ORFs are connected by dashed lines. The colors of the arrows and dashed lines indicate different postulated functions of the encoded proteins: light green is reserved for mating pair formation (Mpf) functions, dark green for DNA transfer processing functions (Dtr), yellow for replication and maintenance. ORFs encoding proteins of unknown function are shown in grey, if they are related, or without color, if they are unrelated. The virulence-associated gene vapD of pXF51 is shown in pink. Direct repeats are indicated as rectangles with different shades of brown and blue for the different pairs of repeats in pSB102 and pXF51, respectively. GenBank accession numbers of the respective nucleotide sequences are as follows: pSB102, AJ304453; X.fastidiosa plasmid pXF51, AE003851.