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EC 1.11.1.11 Details
EC number
1.11.1.11
Accepted name
L-ascorbate peroxidase
Reaction
2 L-ascorbate + H2O2 + 2 H+ = L-ascorbate + L-dehydroascorbate + 2 H2O (overall reaction);;(1a) 2 L-ascorbate + H2O2 + 2 H+ = 2 monodehydroascorbate + 2 H2O;;(1b) 2 monodehydroascorbate = L-ascorbate + L-dehydroascorbate (spontaneous)
Other name(s)
L-ascorbic acid peroxidase, L-ascorbic acid-specific peroxidase, ascorbate peroxidase, ascorbic acid peroxidase
Systematic name
L-ascorbate:hydrogen-peroxide oxidoreductase
CAS registry number
72906-87-7
Comment
A heme protein. Oxidizes ascorbate and low molecular weight aromatic substrates. The monodehydroascorbate radical produced is either directly reduced back to ascorbate by EC 1.6.5.4 [monodehydroascorbate reductase (NADH)] or undergoes non-enzymic disproportionation to ascorbate and dehydroascorbate.
History
created 1983, modified 2010, modified 2011
EC Tree
1.13.11.7 created 1965 as EC 1.13.1.7, transferred 1972 to EC 1.13.11.7, deleted 1980
1.13.11.21 created 1972, deleted 2001