Esterifies acyl-group from acyl-ACP to the sn-2 position of glycerol-3-phosphate, a step in cutin biosynthesis. an acyl-CoA + sn-glycerol 3-phosphate = a 2-acyl-sn-glycerol 3-phosphate + CoA Widely expressed at high level. Highly expressed in seedlings, developing seedlings and flower buds. The HXXXXD motif is essential for acyltransferase activity and may constitute the binding site for the phosphate moiety of the glycerol-3-phosphate. Belongs to the GPAT/DAPAT family.