ID   1.3.2.3
DE   L-galactonolactone dehydrogenase.
AN   galactonolactone dehydrogenase.
AN   GLDase.
AN   GLDHase.
AN   L-galactono-gamma-lactone dehydrogenase.
CA   4 Fe(III)-[cytochrome c] + L-galactono-1,4-lactone = 4 Fe(II)-[cytochrome
CA   c] + 5 H(+) + L-dehydroascorbate.
CC   -!- Catalyzes the final step in the biosynthesis of L-ascorbic acid in
CC       higher plants and in nearly all higher animals with the exception of
CC       primates and some birds.
CC   -!- Very specific for its substrate L-galactono-1,4-lactone as
CC       D-galactono-gamma-lactone, D-gulono-gamma-lactone, L-gulono-gamma-
CC       lactone, D-erythronic-gamma-lactone, D-xylonic-gamma-lactone,
CC       L-mannono-gamma-lactone, D-galactonate, D-glucuronate and D-gluconate
CC       are not substrates.
CC   -!- FAD, NAD(+), NADP(+) and O2 (cf. EC 1.3.3.12) cannot act as electron
CC       acceptor.
DR   Q2RAP0, GLDH1_ORYSJ;  Q2QXY1, GLDH2_ORYSJ;  Q9SU56, GLDH_ARATH ;
DR   O47881, GLDH_BRAOL ;
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