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| Name = L-galactonolactone dehydrogenase
| EC_number = 1.3.2.3
| CAS_number = 2603847
| IUBMB_EC_number = 1/3/2/3
| GO_code =
| image =
| width =
| caption =
}}L-galactonolactone dehydrogenase ({{EC number|1.3.2.3}}, galactonolactone dehydrogenase, L-galactono-gamma-lactone dehydrogenase, L-galactono-gamma-lactone:ferricytochrome-c oxidoreductase, GLDHase, GLDase) is an enzyme with systematic name L-galactono-1,4-lactone:ferricytochrome-c oxidoreductase.[1][2][3][4][5] This enzyme catalyses the following chemical reaction
(1) L-galactono-1,4-lactone + 2 ferricytochrome cL-ascorbate + 2 ferrocytochrome c + 2 H+
(2) L-ascorbate + 2 ferricytochrome c
This enzyme catalyses the final step in the biosynthesis of L-ascorbic acid in plant
References
1. ^{{cite journal | title = Properties of partially purified L-galactono-γ-lactone dehydrogenase |author1 = Mapson, L.W. |author2 =Breslow, E. |journal = Biochem. J. |year = 1957 |volume = 65 |pages = 29–29 |pmid = }}
2. ^{{cite journal | vauthors = Mapson LW, Isherwood FA, Chen YT | title = Biological synthesis of L-ascorbic acid: the conversion of L-galactono-gamma-lactone into L-ascorbic acid by plant mitochondria | journal = The Biochemical Journal | volume = 56 | issue = 1 | pages = 21–8 | date = January 1954 | pmid = 13126087 | pmc = 1269564 }}
3. ^{{cite journal | vauthors = Isherwood FA, Chen YT, Mapson LW | title = Synthesis of L-ascorbic acid in plants and animals | journal = The Biochemical Journal | volume = 56 | issue = 1 | pages = 1–15 | date = January 1954 | pmid = 13126085 | pmc = 1269562 }}
4. ^{{cite journal | vauthors = Oba K, Ishikawa S, Nishikawa M, Mizuno H, Yamamoto T | title = Purification and properties of L-galactono-gamma-lactone dehydrogenase, a key enzyme for ascorbic acid biosynthesis, from sweet potato roots | journal = Journal of Biochemistry | volume = 117 | issue = 1 | pages = 120–4 | date = January 1995 | pmid = 7775377 }}
5. ^{{cite journal | vauthors = Ostergaard J, Persiau G, Davey MW, Bauw G, Van Montagu M | title = Isolation of a cDNA coding for L-galactono-gamma-lactone dehydrogenase, an enzyme involved in the biosynthesis of ascorbic acid in plants. Purification, characterization, cDNA cloning, and expression in yeast | journal = The Journal of Biological Chemistry | volume = 272 | issue = 48 | pages = 30009–16 | date = November 1997 | pmid = 9374475 | doi = 10.1074/jbc.272.48.30009 }}
6. ^{{cite journal | vauthors = Wheeler G, Ishikawa T, Pornsaksit V, Smirnoff N | title = Evolution of alternative biosynthetic pathways for vitamin C following plastid acquisition in photosynthetic eukaryotes | journal = eLife | volume = 4 | date = March 2015 | pmid = 25768426 | pmc = 4396506 | doi = 10.7554/eLife.06369 | url = http://europepmc.org/articles/PMC4396506 }}
2. ^{{cite journal | vauthors = Mapson LW, Isherwood FA, Chen YT | title = Biological synthesis of L-ascorbic acid: the conversion of L-galactono-gamma-lactone into L-ascorbic acid by plant mitochondria | journal = The Biochemical Journal | volume = 56 | issue = 1 | pages = 21–8 | date = January 1954 | pmid = 13126087 | pmc = 1269564 }}
3. ^{{cite journal | vauthors = Isherwood FA, Chen YT, Mapson LW | title = Synthesis of L-ascorbic acid in plants and animals | journal = The Biochemical Journal | volume = 56 | issue = 1 | pages = 1–15 | date = January 1954 | pmid = 13126085 | pmc = 1269562 }}
4. ^{{cite journal | vauthors = Oba K, Ishikawa S, Nishikawa M, Mizuno H, Yamamoto T | title = Purification and properties of L-galactono-gamma-lactone dehydrogenase, a key enzyme for ascorbic acid biosynthesis, from sweet potato roots | journal = Journal of Biochemistry | volume = 117 | issue = 1 | pages = 120–4 | date = January 1995 | pmid = 7775377 }}
5. ^{{cite journal | vauthors = Ostergaard J, Persiau G, Davey MW, Bauw G, Van Montagu M | title = Isolation of a cDNA coding for L-galactono-gamma-lactone dehydrogenase, an enzyme involved in the biosynthesis of ascorbic acid in plants. Purification, characterization, cDNA cloning, and expression in yeast | journal = The Journal of Biological Chemistry | volume = 272 | issue = 48 | pages = 30009–16 | date = November 1997 | pmid = 9374475 | doi = 10.1074/jbc.272.48.30009 }}
6. ^{{cite journal | vauthors = Wheeler G, Ishikawa T, Pornsaksit V, Smirnoff N | title = Evolution of alternative biosynthetic pathways for vitamin C following plastid acquisition in photosynthetic eukaryotes | journal = eLife | volume = 4 | date = March 2015 | pmid = 25768426 | pmc = 4396506 | doi = 10.7554/eLife.06369 | url = http://europepmc.org/articles/PMC4396506 }}
External links
- {{MeshName|L-galactonolactone+dehydrogenase}}
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