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Alignment of TraA from N. gonorrhoeae and N. meningitidis. There are three alleles of traA. Gonococci have a short or long allele, and meningococci carry a long allele with a different signal sequence. Amino acid differences are in bold. The signal sequence cleavage site is indicated by a solid arrow. An alternate potential cleavage site in meningococci is indicated by a dashed arrow.
