This domain family is found in bacteria, archaea and eukaryotes, and is approximately 50 amino acids in length. The family is found in association with Pfam:PF00132. Mac uses acetyl-CoA as acetyl donor to acetylated cytoplasmic maltose.

1: Maltose transacetylase of Escherichia coli. Mapping and cloning of its structural, gene, mac, and characterization of the enzyme as a dimer of identical polypeptides with a molecular weight of 20,000. Brand B, Boos W; J Biol Chem. 1991;266:14113-14118. PMID:1856235