. "Edited: Garapati, P V, 2012-01-11"^^ . "Authored: Garapati, P V, 2012-01-11"^^ . "Alpha-linoloyl-CoA is converted to Stearidonoyl-CoA (SDA, 6,9,12,15-18:3(n-3)) by delta-6-destaurase (fatty acid desaturase-2, FADS2). FADS2 uses the cytochrome b5 system to add a double bond at position 6. This is the rate limiting step in alpha-linolenic acid (ALA) metabolism (Horrobin 1993)."^^ . . . . . . . . . . . "Desaturation of alpha-linoleoyl-CoA to Stearidonoyl-CoA"^^ . "1.14.19.3"^^ . . . . . . . . . .