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1.14.14.87: 2-hydroxyisoflavanone synthase

This is an abbreviated version!
For detailed information about 2-hydroxyisoflavanone synthase, go to the full flat file.

Word Map on EC 1.14.14.87

Reaction

(2S)-naringenin
+
O2
+
[reduced NADPH-hemoprotein reductase]
=
2,4',5,7-tetrahydroxyisoflavanone
+
H2O
+
[oxidized NADPH-hemoprotein reductase]

Synonyms

2-HIS, 2-hydroxyisoflavanone synthase, 2-hydroxyisoflavanone synthase 1, 2HI synthase, CYP93C, Cyp93C1, CYP93C18, CYP93C2, Cyp93C20, CYT93C, EC 1.14.13.136, EC 1.14.13.86, GmIFS, GmIFS1, IFS, IFS1, IFS2, IFS2-12, isoflavone synthase, isoflavone synthase 2

ECTree

     1 Oxidoreductases
         1.14 Acting on paired donors, with incorporation or reduction of molecular oxygen
             1.14.14 With reduced flavin or flavoprotein as one donor, and incorporation of one atom of oxygen into the other donor
                1.14.14.87 2-hydroxyisoflavanone synthase

Engineering

Engineering on EC 1.14.14.87 - 2-hydroxyisoflavanone synthase

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PROTEIN VARIANTS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
K375T
-
the mutant catalyses the aryl migration from liquiritigenin to yield 3,7,4'-trihydroxyflavanone only, its pH optimum is at pH 6.5
L371V
-
inactive
L371V/K375T
-
the mutant shows 3-5% activity levels compared to the wild type. The mutant produces a mixture of 95% 3beta-hydroxyflavanone and 5% flavone from (2S)-liquiritigenin
S310T
-
the mutant also catalyses the aryl migration from liquiritigenin to yield 2,7,4'-trihydroxyisoflavanone, but the ratio of the by-product (3,7,4'-trihydroxyflavanone) formation is increased from 8% to 36% (pH 7.5), and a small amount (7%) of a new product, 7,4'-dihydroxyflavone, is detected compared to the wild type
S310T/K375T
-
the P450 level of the mutant is approximately 1.5times that of wild type. The mutant shows 3-5% activity levels compared to the wild type
S310T/L371V/K375T
additional information