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Galactonolactone dehydrogenase : ウィキペディア英語版 | Galactonolactone dehydrogenase
L-galactonolactone dehydrogenase (, ''galactonolactone dehydrogenase'', ''L-galactono-gamma-lactone dehydrogenase'', ''L-galactono-gamma-lactone:ferricytochrome-c oxidoreductase'', ''GLDHase'', ''GLDase'') is an enzyme with system name ''L-galactono-1,4-lactone:ferricytochrome-c oxidoreductase''. This enzyme catalyses the following chemical reaction : (1) L-galactono-1,4-lactone + 2 ferricytochrome c L-ascorbate + 2 ferrocytochrome c + 2 H+ : (2) L-ascorbate + 2 ferricytochrome c L-dehydroascorbate + 2 ferrocytochrome c + 2 H+ (spontaneous) This enzyme catalyses the final step in the biosynthesis of L-ascorbic acid in higher plants and in nearly all higher animals, except for primates and some birds. == References ==
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