Acyltransferase with broad-specificity, that mediates the acylation of lysophospholipids to produce phospholipids (glycerophospholipids). Converts lysophosphatidylserine (1-acyl-2-hydroxy-sn-glycero-3-phospho-L-serine or LPS) to phosphatidylserine (1,2-diacyl-sn-glycero-3-phospho-L-serine or PS) (LPSAT activity), lysophosphatidylcholine (1-acyl-sn-glycero-3-phosphocholine or LPC) to phosphatidylcholine (1,2-diacyl-sn-glycero-3-phosphocholine or PC) (LPCAT activity), also lysophosphatidylethanolamine (1-acyl-sn-glycero-3-phosphochethanolamine or LPE) to phosphatidylchethanolamine (LPEAT activity) and lysophosphatidylglycerol (1-acyl-2-hydroxy-sn-glycero-3-phospho-(1'-sn-glycerol) or LPG) to phosphatidylglycerol (1,2-diacyl-sn-glycero-3-phospho-(1'-sn-glycerol) or PG) (LPGAT activity). Has a preference for unsaturated fatty acids of at least 16 carbons such as oleoyl-CoA ((9Z)-octadecenoyl-CoA) and palmitoleoyl-CoA ((9Z)-hexadecenoyl-CoA). Glycerophospholipids are important structural and functional components of cellular membrane, acyl-chain remodeling regulates the molecular species distribution of glycerophospholipids which can affect membrane fluidity and curvature. Essential for fertility and viability together with Nessy protein (Nes). a 1-acyl-sn-glycero-3-phospho-L-serine + an acyl-CoA = a 1,2-diacyl-sn-glycero-3-phospho-L-serine + CoA (9Z)-hexadecenoyl-CoA + 1-(9Z-octadecenoyl)-sn-glycero-3-phospho-L-serine = 1-(9Z-octadecenoyl)-2-(9Z-hexadecenoyl)-sn-glycero-3-phospho-L-serine + CoA (9Z)-octadecenoyl-CoA + 1-(9Z-octadecenoyl)-sn-glycero-3-phospho-L-serine = 1,2-di-(9Z)-octadecenoyl-sn-glycero-3-phospho-L-serine + CoA a 1-acyl-sn-glycero-3-phosphocholine + an acyl-CoA = a 1,2-diacyl-sn-glycero-3-phosphocholine + CoA (9Z)-octadecenoyl-CoA + 1-hexadecanoyl-sn-glycero-3-phosphocholine = 1-hexadecanoyl-2-(9Z-octadecenoyl)-sn-glycero-3-phosphocholine + CoA (9Z)-hexadecenoyl-CoA + 1-hexadecanoyl-sn-glycero-3-phosphocholine = 1-hexadecanoyl-2-(9Z-hexadecenoyl)-sn-glycero-3-phosphocholine + CoA a 1-acyl-sn-glycero-3-phosphoethanolamine + an acyl-CoA = a 1,2-diacyl-sn-glycero-3-phosphoethanolamine + CoA (9Z)-octadecenoyl-CoA + 1-hexadecanoyl-sn-glycero-3-phosphoethanolamine = 1-hexadecanoyl-2-(9Z-octadecenoyl)-sn-glycero-3-phosphoethanolamine + CoA (9Z,12Z)-octadecadienoyl-CoA + 1-hexadecanoyl-sn-glycero-3-phosphoethanolamine = 1-hexadecanoyl-2-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphoethanolamine + CoA (9Z)-hexadecenoyl-CoA + 1-hexadecanoyl-sn-glycero-3-phosphoethanolamine = 1-hexadecanoyl-2-(9Z)-hexadecenoyl-sn-glycero-3-phosphoethanolamine + CoA (9Z)-octadecenoyl-CoA + 1-(9Z-octadecenoyl)-sn-glycero-3-phospho-(1'-sn-glycerol) = 1,2-di-(9Z-octadecenoyl)-sn-glycero-3-phospho-(1'-sn-glycerol) + CoA Lipid metabolism; phospholipid metabolism. 'Oysgedart' is a Yiddish word meaning skinny, chosen because of this protein's role in phospholipid synthesis. Belongs to the membrane-bound acyltransferase family.