KEGG   REACTION: R10053
Entry
R10053                      Reaction                               

Name
L-gulono-1,4-lactone:oxygen 3-oxidoreductase
Definition
L-Gulono-1,4-lactone + Oxygen <=> Ascorbate + Hydrogen peroxide
Equation
Comment
two-step reaction (see R03184+R00647)
Reaction class
RC00195  C00072_C01040
RC02755  C00007_C00027
Enzyme
Pathway
rn01240  Biosynthesis of cofactors
Module
M00129  Ascorbate biosynthesis, animals, glucose-1P => ascorbate
Orthology
K00103  L-gulonolactone oxidase [EC:1.1.3.8]
Other DBs
RHEA: 32366

KEGG   REACTION: R03184
Entry
R03184                      Reaction                               

Name
L-gulono-1,4-lactone:oxygen 2-oxidoreductase
Definition
L-Gulono-1,4-lactone + Oxygen <=> L-xylo-Hexulonolactone + Hydrogen peroxide
Equation
Comment
first step of two-step reaction (see R10053, R03184+R00647)
Reaction class
RC00869  C01040_C03289
RC02755  C00007_C00027
Enzyme
Pathway
rn00053  Ascorbate and aldarate metabolism
rn01100  Metabolic pathways
Module
M00129  Ascorbate biosynthesis, animals, glucose-1P => ascorbate
Orthology
K00103  L-gulonolactone oxidase [EC:1.1.3.8]
Other DBs
RHEA: 12355

KEGG   REACTION: R00647
Entry
R00647                      Reaction                               

Definition
Ascorbate <=> L-xylo-Hexulonolactone
Equation
Comment
spontaneous
second step of two-step reaction (see R10053, R03184+R00647)
Reaction class
RC00346  C00072_C03289
Enzyme
Pathway
rn00053  Ascorbate and aldarate metabolism
rn01100  Metabolic pathways
Module
M00129  Ascorbate biosynthesis, animals, glucose-1P => ascorbate
Other DBs
RHEA: 15272

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