This domain is found at the C-terminus of wax ester synthases (WS)/diacylglycerol O-acyltransferases (DGAT). These enzymes are utilised for the in vivo production of biodiesel and other wax esters [1].

1: Structural and Biochemical Studies of a Biocatalyst for the Enzymatic Production of Wax Esters. Petronikolou N, Nair SK; ACS Catal. 2018;8:6334-6344. PMID:31559109