3-dehydro-L-gulonate 2-dehydrogenase

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3-dehydro-L-gulonate 2-dehydrogenase
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3-dehydro-L-gulonate 2-dehydrogenase dimer, E.Coli
Identifiers
EC no. 1.1.1.130
CAS no. 37250-61-6
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
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PMC articles
PubMed articles
NCBI proteins

In enzymology, 3-dehydro-L-gulonate 2-dehydrogenase (EC 1.1.1.130) is an enzyme that catalyzes the chemical reaction:

+ NAD+
 
 
 
H+
3-dehydro-L-gulonate 2-dehydrogenase
 
H+
 
+ NADH
 

The two substrates of this enzyme are 3-dehydro-L-gulonic acid and oxidised nicotinamide adenine dinucleotide (NAD+). Its products are 2,3-diketogulonic acid, reduced NADH, and a proton. The enzyme can also use the alternative cofactor, nicotinamide adenine dinucleotide phosphate. [1] [2]

This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-OH group of donor with NAD+ or NADP+ as acceptor. The systematic name of this enzyme class is 3-dehydro-L-gulonate:NAD(P)+ 2-oxidoreductase. Other names in common use include 3-keto-L-gulonate dehydrogenase, 3-ketogulonate dehydrogenase, 3-keto-L-gulonate dehydrogenase, and 3-ketogulonate dehydrogenase. This enzyme participates in pentose and glucuronate interconversions and ascorbate and aldarate metabolism.

References

  1. Enzyme 1.1.1.130 at KEGG Pathway Database.
  2. Volk WA, Larsen JL (1962). "beta-Keto-L-gulonic acid as an intermediate in the bacterial metabolism of ascorbic acid". J. Biol. Chem. 237 (8): 2454–7. doi: 10.1016/S0021-9258(19)73773-9 . PMID   13926592.