This domain family is found in bacteria and eukaryotes, and is typically between 120 and 131 amino acids in length. The family is found in association with Pfam:PF01643. The plant acyl-acyl carrier protein (ACP) thioesterases (TEs) have roles in fatty acid synthesis.

1: Modification of the substrate specificity of an acyl-acyl carrier protein thioesterase by protein engineering. Yuan L, Voelker TA, Hawkins DJ; Proc Natl Acad Sci U S A 1995;92:10639-10643. PMID:7479856