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ENZYME entry: EC

Accepted Name
Dihydroflavanol 4-reductase.
Alternative Name(s)
Dihydroflavonol 4-reductase.
Dihydrokaempferol 4-reductase.
NADPH-dihydromyricetin reductase.
Reaction catalysed
A (2R,3S,4S)-leucoanthocyanidin + NADP(+) <=> a (2R,3R)-dihydroflavonol + NADPH
  • This plant enzyme, involved in the biosynthesis of anthocyanidins, is known to act on (+)-dihydrokaempferol, (+)-taxifolin, and (+)- dihydromyricetin, although some enzymes may act only on a subset of these compounds.
  • Each dihydroflavonol is reduced to the corresponding cis-flavan-3,4- diol.
  • NAD(+) can act instead of NADP(+), but more slowly.
PRIAM enzyme-specific profiles1.1.1.219
KEGG Ligand Database for Enzyme Nomenclature1.1.1.219
IUBMB Enzyme Nomenclature1.1.1.219
MEDLINEFind literature relating to
P14721, DFRA_ANTMA;  P51102, DFRA_ARATH;  P51103, DFRA_CALCH;  
P51104, DFRA_DIACA;  P51105, DFRA_GERHY;  P51106, DFRA_HORVU;  
P73212, DFRA_SYNY3;  P51110, DFRA_VITVI;  

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