Fig. 3

Multiple alignments of acetyltransferases (Oac, OacB, OacC, OacD, and Oac1b) from Shigella flexneri strains. The alignment was done using Clustal Omega. Asterisks and dots represent the amino acids that are identical or similar, respectively. Black lines above amino acids indicate three conserved motifs. Boxes with red outlines showing critical residues (R47, H58, W71, F98, R116, R119, and S146) identified in OacB