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Multiple-sequence alignment of the mycobacterial PimA α-mannosyltransferase and the O9a and O8 WbdA mannosyltransferase domains. Conserved residues are highlighted in black, and similar residues are highlighted in gray. The Glu residues of the EX7E motifs are highlighted in red. WbdAO9a Arg80 involved in the WbdAO9 C80R O9 → O9a seroconversion is highlighted in cyan. Alignments were performed using the ClustalW2 server (28, 29).
