Additional file 4. Comparison of Zot proteins from Campylobacter species, N. meningitidis and V. cholerae. * indicates identical amino acids (shaded in red). : indicates conservative mutations (shaded in blue). .indicates semi-conservative mutations. Transmembrane domains are underlined. Walker A and walker B motifs in the N-terminus of Campylobacter Zot proteins were identified and boxed. Walker A has a sequence of GxxxxGK[S/T], where x is any residue. Walker B motif has a sequence of hhhh[D/E], where h is a hydrophobic residue [25]
