Figure 3

Physical map of G. lovleyi strain SZ plasmid pSZ77. Cobalamin (Cbl) biosynthesis clusters are shown in red. Transport-related genes such as the TonB-dependent receptors (Glov_3667 and Glov_3675) are red-black barred. Genes likely to play a role in pSZ77 replication or maintenance, such as repA (Glov_3681) are solid black. Additional metabolic functions, such as metE (cobalamin-independent methionine synthase) and PFOR complex genes (pyruvate ferredoxin/flavodoxin oxidoreductase A and B), are indicated in light blue. Genes lacking predicted function in Geobacter metabolism or pSZ77 replicon stability are not shown here, but are included in the pSZ77 map shown in Additional file 9.