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Literature summary for 1.1.1.234 extracted from

  • Halbwirth, H.; Martnes, S.; Wienand, U.; Forkmann, G.; Stich, K.
    Biochemical formation of anthocyanins in silk tissue of Zea mays (2003), Plant Sci., 164, 489-495.
No PubMed abstract available
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Cloned(Commentary)

Cloned (Comment) Organism
expressed in yeast and petunia Zea mays

Inhibitors

Inhibitors Comment Organism Structure
1,10-phenanthroline slight inhibition at 1 mM, 50-70% inhibition at 5 mM Zea mays
p-hydroxymercuribenzoate complete inhibition at 1 mM Zea mays

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
(2S)-eriodictyol + NADPH Zea mays reaction provides precursors for the synthesis of 3-deoxyanthocyanidins luteoforol + NADP+
-
 ?
(2S)-flavanone + NADPH Zea mays reaction provides precursors for the synthesis of 3-deoxyanthocyanidins (2S)-flavan-4-ol + NADP+
-
 ?
(2S)-naringenin + NADPH + H+ Zea mays reaction provides precursors for the synthesis of 3-deoxyanthocyanidins apiforol + NADP+
-
 ?

Organism

Organism UniProt Comment Textmining
Zea mays
-
 strains: Peterson Ac 1355 A-D (sm), al-line, and Pirat
-

Reaction

Reaction Comment Organism Reaction ID
(2S)-flavan-4-ol + NADP+ = (2S)-flavanone + NADPH + H+ enzyme acts as flavone 4-reductase as well as dihydroflavonol 4-reductase Zea mays
a

Source Tissue

Source Tissue Comment Organism Textmining
silk
-
 Zea mays
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
(2S)-eriodictyol + NADPH
-
 Zea mays luteoforol + NADP+
-
 ?
(2S)-eriodictyol + NADPH reaction provides precursors for the synthesis of 3-deoxyanthocyanidins Zea mays luteoforol + NADP+
-
 ?
(2S)-flavanone + NADPH
-
 Zea mays (2S)-flavan-4-ol + NADP+
-
 ?
(2S)-flavanone + NADPH reaction provides precursors for the synthesis of 3-deoxyanthocyanidins Zea mays (2S)-flavan-4-ol + NADP+
-
 ?
(2S)-naringenin + NADPH + H+
-
 Zea mays apiforol + NADP+
-
 ?
(2S)-naringenin + NADPH + H+ reaction provides precursors for the synthesis of 3-deoxyanthocyanidins Zea mays apiforol + NADP+
-
 ?
additional information enzyme also acts on 5-deoxydihydroflavonols Zea mays ?
-
 ?

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
25
-
-
 Zea mays

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
5.8
-
-
 Zea mays

Cofactor

Cofactor Comment Organism Structure
NADH can partially replace for NADPH Zea mays
NADPH
-
 Zea mays