Indole-3-pyruvate monooxygenase

Class of enzymes From Wikipedia, the free encyclopedia

Indole-3-pyruvate monooxygenase (EC 1.14.13.168, YUC2 (gene), spi1 (gene)) is an enzyme with systematic name indole-3-pyruvate,NADPH:oxygen oxidoreductase (1-hydroxylating, decarboxylating).[1] This enzyme catalyses the following chemical reaction

2D representation of the chemical structure of Q23905803.
indole-3-pyruvic acid
+ NADPH + H+
 
 
O2
H2O
Rightward reaction arrow with minor substrate(s) from top left and minor product(s) to top right
 
 
 
+ NADP+ + CO2
 

The four substrates of this enzyme are indole-3-pyruvic acid, reduced nicotinamide adenine dinucleotide phosphate (NADPH), oxygen, and a proton. Its products are indole-3-acetic acid, oxidised NADP+, water, and carbon dioxide.[2]

The starting material is produced from the amino acid, tryptophan, by action of the enzyme L-tryptophan—pyruvate aminotransferase. The product of the reaction is the main auxin plant hormone.[3]

References

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