The MME flanked by nadC and xthA . This MME contains a hypothetical gene (NMB0397) in N. meningitidis strain MC58 . This gene is disrupted in a different way in all other strains from which it has been sequenced. In N. meningitidis strain Z2491 , it is interrupted by a CREE, which also disrupts the next gene, in N. meningitidis strain FAM18 it is disrupted by a 61 bp indel that causes a frame-shift, in N. gonorrhoeae strain FA1090  it is disrupted by a hypothetical gene, and in N. gonorrhoeae strain FA19 (AY386268) it is disrupted by a different CREE from that in this location in N. meningitidis strain Z2491. Similar genes or fragments thereof are indicated in the same colour.