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L-ascorbate oxidase
L-ascorbate oxidase
Identifiers
EC no.	1.10.3.3
CAS no.	9029-44-1
Databases
IntEnz	IntEnz view
BRENDA	BRENDA entry
ExPASy	NiceZyme view
KEGG	KEGG entry
MetaCyc	metabolic pathway
PRIAM	profile
PDB structures	RCSB PDB PDBe PDBsum
Gene Ontology	AmiGO / QuickGO
PMC
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PMC	articles
PubMed	articles
NCBI	proteins

In enzymology, a L-ascorbate oxidase (EC 1.10.3.3) is an enzyme that catalyzes the chemical reaction

2 L-ascorbate + O₂

\rightleftharpoons

2 dehydroascorbate + 2 H₂O

Thus, the two substrates of this enzyme are L-ascorbate and O₂, whereas its two products are dehydroascorbate and H₂O.^[1]

Function

This enzyme belongs to the family of oxidoreductases, specifically those acting on diphenols and related substances as donor with oxygen as acceptor. This enzyme participates in ascorbate metabolism. It employs one cofactor, copper.It has anti-aging effects

Nomenclature

The systematic name of this enzyme class is L-ascorbate:oxygen oxidoreductase. Other names in common use include ascorbase, ascorbic acid oxidase, ascorbate oxidase, ascorbic oxidase, ascorbate dehydrogenase, L-ascorbic acid oxidase, AAO, L-ascorbate:O2 oxidoreductase, and AA oxidase.

References

^ Mondovì B, Avigliano L (February 1984). "Ascorbate oxidase.". In Lontie R (ed.). Copper Proteins and Copper Enzymes. Boca Raton: CRC Press. pp. 101–118. doi:10.1201/9781351070898. ISBN 978-1-351-07089-8.