Mat1, Mac1, and Mac2 belong to the superfamily of acyl-CoA-dependent acyltransferases. (A) Molecular phylogeny of Mat1. Sequences were aligned using ClustalW. The following numbers are the accession numbers: for Mat1 of U. maydis, EAK83922; for Um01436 of U. maydis, EAK81770; for An8134 of A. nidulans, EAA58771; for Fg04866 of Gibberella zeae, EAA74194; for Afu3g14730 of Aspergillus fumigatus, EAL92114; for Mg366122 of Magnaporthe grisea, EAQ71714; and for Fg11155 of G. zeae, EAA75365. (B) Molecular phylogeny of Mac1 and Mac2. The following numbers are the accession numbers: for Mac1 of U. maydis, EAK83924; for An8137 of A. nidulans, EAA58774; for Mac2 of U. maydis, EAK83927; for Um01438 of U. maydis, EAK81602; for An8136 of A. nidulans, EAA58773; for Fg11281 of G. zeae, EAA78594; and for LolU-1 of Neotyphodium uncinatum, AAV68707. (C) Alignment of the short signature sequences (HXXXD and DF) that are nearly invariant in this family of potential acyltransferases (Pfam domain 02458). The HXXXD motif is believed to be part of the active center. ψ indicates a hydrophobic amino acid.