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ENZYME entry: EC

Accepted Name
L-galactonolactone dehydrogenase.
Alternative Name(s)
Galactonolactone dehydrogenase.
L-galactono-gamma-lactone dehydrogenase.
Reaction catalysed
L-galactono-1,4-lactone + 4 ferricytochrome c <=> L-dehydroascorbate + 4 ferrocytochrome c + 4 H(+)
  • Catalyzes the final step in the biosynthesis of L-ascorbic acid in higher plants and in nearly all higher animals with the exception of primates and some birds.
  • Very specific for its substrate L-galactono-1,4-lactone as D-galactono-gamma-lactone, D-gulono-gamma-lactone, L-gulono-gamma- lactone, D-erythronic-gamma-lactone, D-xylonic-gamma-lactone, L-mannono-gamma-lactone, D-galactonate, D-glucuronate and D-gluconate are not substrates.
  • FAD, NAD(+), NADP(+) and O(2) (cf. EC cannot act as electron acceptor.
PRIAM enzyme-specific profiles1.3.2.3
KEGG Ligand Database for Enzyme Nomenclature1.3.2.3
IUBMB Enzyme Nomenclature1.3.2.3
MEDLINEFind literature relating to
O47881, GLDH_BRAOL;  

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