Fig 1.

Maps of GGIs in N. gonorrhoeae and N. meningitidis. Five GGI types have been identified in meningococci by overlapping PCR and bioinformatic analysis. Genes in black have been shown to be necessary for T4SS-dependent DNA secretion in gonococci. Genes in white are not necessary for DNA secretion. In meningococcal maps, genes filled with diagonal bars are similar to, yet distinct from, genes found in gonococcal strain MS11. Genes in light gray with deltas or dashes through them are deleted in meningococci. Inverted triangles represent insertions in meningococcal sequences, with the insertion sequence or homologous sequence indicated above (bases drawn to scale); a dagger indicates an insertion with no homologous sequence found.