(A) Analysis of the Tn2 deletion region: the truncation affecting tnpR in gonococcal pbla.1 and pbla.2 differ by a single nucleotide.

Schematic representation of tnpR sequences of gonococcal and H. ducreyi pblas is shown on the bottom with the SNP displayed as a white line and the site of the Tn2 truncation in relation to H. ducreyi pbla indicated with a triangle. Displayed above is the nucleotide alignment of gonococcal pbla to H. ducreyi DMC64 pbla.2. (B) Sequence alignment of NEIS2964 alleles -1 to -3) with SNPs highlighted in white.

(AI)