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Glycerol-3-phosphate acyltransferase N-terminal GPAT_N is the N-terminal domain of glycerol-3-phosphate acyltransferases, and it forms a four-helix bundle. Glycerol-3-phosphate (1)-acyltransferase(G3PAT) catalyzes the incorporation of an acyl group from either acyl-acyl carrier proteins or acyl-CoAs into the sn-1 position of glycerol 3-phosphate to yield 1-acylglycerol-3-phosphate. G3PATs can either be selective, preferentially using the unsaturated fatty acid, oleate (C18:1), as the acyl donor, or non-selective, using either oleate or the saturated fatty acid, palmitate (C16:0), at comparable rates. The differential substrate-specificity for saturated versus unsaturated fatty acids seen within this enzyme family has been implicated in the sensitivity of plants to chilling temperatures. The exact function of this domain is not known. it lies upstream of family Acyltransferase, pfam01553. |
Jiyao W et al.(2023). "The conserved domain database in 2023.",