Figure 1.

Alignment of amino acid sequences of the AbgT family of transporters. The alignments were done using CLUSTAL W. *identical residues: >60% homologous residues. The four conserved residues involved in lining the channel of the inner core of the protein are indicated with green arrows (Ng, Neisseria gonorrhoeae; Ec, Escherichia coli; Ab, Alcanivorax borkumensis; Nm, Neisseria meningitidis; Cc, Caulobacter crescentus; Sp, Shewanella putrefaciens; Pm, Pasteurella multocida; Vc, Vibrio cholerae; Bh, Bacillus halodurans; Pd, Peptoclostridium difficile; Sa, Staphylococcus aureus; Td, Treponema denticola; Cd, Corynebactrium diphtheria).