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Group I and group II-specific motifs deduced from AoxB sequence alignment with the WebLogo software program via the WebLogo website (http://weblogo.berkeley.edu/) (11, 33). Residues with which these motifs could be unambiguously defined are in bold. The absence of these motifs in AoxB sequences belonging to neither group I nor group II was checked visually. Amino acid numbering was based on the Alcaligenes faecalis protein sequence (UniProt accession number Q7SIF4).
