KEGG   REACTION: R12403
Entry
R12403                      Reaction                               

Name
4alpha-methylzymosterol,ferrocytochrome-b5:oxygen oxidoreductase (hydroxylating)
Definition
4alpha-Methylzymosterol + 6 Ferrocytochrome b5 + 3 Oxygen + 6 H+ <=> 4alpha-Carboxy-5alpha-cholesta-8,24-dien-3beta-ol + 6 Ferricytochrome b5 + 4 H2O
Equation
C05103 + 6 C00999 + 3 C00007 + 6 C00080 <=> C22112 + 6 C00996 + 4 C00001
Comment
three-step reaction
Reaction class
RC03537  C05103_C22112
Enzyme
Pathway
rn00100  Steroid biosynthesis
rn01100  Metabolic pathways
rn01110  Biosynthesis of secondary metabolites
Module
M00101  Cholesterol biosynthesis, squalene 2,3-epoxide => cholesterol
M00102  Ergocalciferol biosynthesis, squalene 2,3-epoxide => ergosterol/ergocalciferol
Orthology
K07750  methylsterol monooxygenase [EC:1.14.18.9]
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