The function of ENSG00000158669 (GPAT4, glycerol-3-phosphate acyltransferase 4) is as follows. Converts glycerol-3-phosphate to 1-acyl-sn-glycerol-3- phosphate (lysophosphatidic acid or LPA) by incorporating an acyl moiety at the sn-1 position of the glycerol backbone (PubMed:18238778). Active against both saturated and unsaturated long-chain fatty acyl- CoAs (PubMed:18238778). Protects cells against lipotoxicity (PubMed:30846318). {ECO:0000269|PubMed:18238778, ECO:0000269|PubMed:30846318}.