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Table 1 Stearoyl-CoA desaturase-1 (SCD1), Delta-5-desaturase (D5D) and Delta-6-desaturase (D6D) with purpose, precursor, product and estimated desaturase activity

From: Fatty acid profile and estimated desaturase activities in whole blood are associated with metabolic health

Desaturase enzyme name Purpose Precursor Product Estimated desaturase activity
SCD1 Desaturation of monounsaturated fatty acids from saturated fatty acids    
SCD16   C16:0 (palmitic acid) C16:1n7 (palmitoleic acid) 16:1n7/16:0
SCD18   C18:0 (stearic acid) C18:1n9 (oleic acid) 18:1n9/18:0
D6D Desaturation of polyunsaturated fatty acids (PUFAs) C18:2n6 (linoleic acid) C18:3n6 (γ-linolenic acid) 18:3n6/18:2n6
D5D Desaturation of polyunsaturated fatty acids (PUFAs) C20:3n6 (dihomo-γ-linolenic acid) C20:4n6 (arachidonic acid) 20:4n6/20:3n6