<p>This domain is found in proteins that are described as 3-ketoacyl-CoA synthases, type III polyketide synthases, fatty acid elongases and fatty acid condensing enzymes, and are found in both prokaryotic and eukaryotic (mainly plant) species. The region contains the active site residues, as well as motifs involved in substrate binding [<cite idref="PUB00020820"/>]. </p> FAE1/Type III polyketide synthase-like protein