Enables 1-acylglycerol-3-phosphate O-acyltransferase activity. Predicted to be involved in phosphatidic acid biosynthetic process and positive regulation of cytokine production. Predicted to act upstream of or within lipid metabolic process. Located in endoplasmic reticulum. Is expressed in several structures, including alimentary system; integumental system; nervous system; respiratory system; and urinary system. Used to study congenital generalized lipodystrophy type 1. Human ortholog(s) of this gene implicated in congenital generalized lipodystrophy type 1 and lipodystrophy. Orthologous to human AGPAT2 (1-acylglycerol-3-phosphate O-acyltransferase 2). [provided by Alliance of Genome Resources, Apr 2022]