DTDP-4-amino-4,6-dideoxy-D-glucose acyltransferase (, VIOB) is an enzyme with systematic name acetyl-CoA:dTDP-4-amino-4,6-dideoxy-alpha-D-glucose N-acetyltransferase. This enzyme catalyses the following chemical reaction
4-acetamido-4,6-dideoxy-alpha-D-glucose is part of the O antigens of Shigella dysenteriae type 7 and Escherichia coli O7.