KEGG   ENZYME: 1.14.11.9Help
Entry
EC 1.14.11.9                Enzyme                                 

Name flavanone 3-dioxygenase;
naringenin 3-hydroxylase;
flavanone 3-hydroxylase;
flavanone 3beta-hydroxylase;
flavanone synthase I;
(2S)-flavanone 3-hydroxylase;
naringenin,2-oxoglutarate:oxygen oxidoreductase (3-hydroxylating)
Class Oxidoreductases;
Acting on paired donors, with O2 as oxidant and incorporation or
reduction of oxygen. The oxygen incorporated need not be derived
from O2;
With 2-oxoglutarate as one donor, and incorporation of one atom of
oxygen into each donor
BRITE hierarchy
Sysname flavanone,2-oxoglutarate:oxygen oxidoreductase (3-hydroxylating)
Reaction(IUBMB) a flavanone + 2-oxoglutarate + O2 = a dihydroflavonol + succinate +
CO2 [RN:R07329]
Reaction(KEGG) R07329 > R02444 R03640 R05039 R07993 R07996 R07997
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Substrate flavanone [CPD:C00766];
2-oxoglutarate [CPD:C00026];
O2 [CPD:C00007]
Product dihydroflavonol [CPD:C15570];
succinate [CPD:C00042];
CO2 [CPD:C00011]
Cofactor Iron [CPD:C00023];
Ascorbate [CPD:C00072]
Comment Requires Fe2+ and ascorbate.
Pathway PATH: ec00941  Flavonoid biosynthesis
PATH: ec01061  Biosynthesis of phenylpropanoids
PATH: ec01100  Metabolic pathways
Orthology KO: K00475  naringenin 3-dioxygenase
Genes ATH: AT3G51240(F3H)
OSA: 4337296(Os04g0662600)
PIC: PICST_32280(NGD3)
Taxonomy
Reference
  Authors
  Title

  Journal
1
Forkmann, G., Heller, W. and Grisebach, H.
Anthocyanin biosynthesis in flowers of Matthiola incana flavanone 3-
and flavonoid 3'-hydroxylases.
Z. Naturforsch. C: Biosci. 35 (1980) 691-695.
Reference
  Authors
  Title

  Journal
  Organism
2  [PMID:15013767]
Wellmann F, Matern U, Lukacin R.
Significance of C-terminal sequence elements for Petunia flavanone
3beta-hydroxylase activity.
FEBS. Lett. 561 (2004) 149-54.
Citrus unshiu, Petunia hybrida
Other DBs ExplorEnz - The Enzyme Database: 1.14.11.9
IUBMB Enzyme Nomenclature: 1.14.11.9
ExPASy - ENZYME nomenclature database: 1.14.11.9
BRENDA, the Enzyme Database: 1.14.11.9
CAS: 75991-43-4

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