Enzymatic reactions [BR:br08201]
1. Oxidoreductase reactions
1.14 Acting on paired donors, with incorporation or reduction of molecular oxygen
1.14.19 With oxidation of a pair of donors resulting in the reduction of O2 to two molecules of water
1.14.19.19
R11006 (4E,8E)-Sphinga-4,8-dienine ceramide + 2 Ferrocytochrome b5 + Oxygen + 2 H+ <=> (4E,8E,10E)-Sphinga-4,8,10-trienine ceramide + 2 Ferricytochrome b5 + 2 H2O
