General scheme of the fatty acid biosynthetic pathway. The main enzymes in the pathway are the FAS complex (Fatty Acid Synthase, ¹), FatA and FatB (Fatty Acid Thioesterases, ² and ³), the KASII complex (3-keto-acyl-ACP synthase II, ⁴), SAD (stearoyl-ACP desaturase, ⁵), the FAE1 complex (Fatty Acid Elongase, ⁶) and the reticular FAD2 and FAD3 (Fatty Acid Desaturases, ⁷ and ⁸) (Acyl Lipids: pathways, 2023).