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ENZYME

ENZYME entry: EC 1.1.1.219

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 + H(+) + NADPH
Comment(s)
  • 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.
Cross-references
BRENDA 1.1.1.219
EC2PDB 1.1.1.219
ExplorEnz 1.1.1.219
PRIAM enzyme-specific profiles 1.1.1.219
KEGG Ligand Database for Enzyme Nomenclature 1.1.1.219
IUBMB Enzyme Nomenclature 1.1.1.219
IntEnz 1.1.1.219
MEDLINE Find literature relating to 1.1.1.219
MetaCyc 1.1.1.219
Rhea expert-curated reactions 1.1.1.219
UniProtKB/Swiss-Prot
P14721, DFRA_ANTMA P51102, DFRA_ARATH P51103, DFRA_CALCH
P51104, DFRA_DIACA P51105, DFRA_GERHY P51106, DFRA_HORVU
P51108, DFRA_MAIZE Q9XES5, DFRA_MALDO P51109, DFRA_MEDSA
P14720, DFRA_PETHY Q84KP0, DFRA_PYRCO P51107, DFRA_SOLLC
P73212, DFRA_SYNY3 P51110, DFRA_VITVI

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