3''-deamino-3''-oxonicotianamine reductase

Class of enzymes From Wikipedia, the free encyclopedia

3''-deamino-3''-oxonicotianamine reductase (EC 1.1.1.285) is an enzyme that catalyzes the chemical reaction

2D representation of the chemical structure of Q27117402.
3"-deamino-3"-oxonicotianamine
 
 
H+
 
Reversible left-right reaction arrow with minor forward substrate(s) from top left and minor reverse product(s) to bottom left
H+
 
 
2D representation of the chemical structure of Q27109156.
2'-deoxymugineic acid
 

The three substrates of this enzyme are 3''-deamino-3''-oxonicotianamine, reduced nicotinamide adenine dinucleotide (NADH), and a proton. Its products are 2'-deoxymugineic acid and oxidised (NAD+). This enzyme can also use the alternative cofactor, nicotinamide adenine dinucleotide phosphate.[1][2]

This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-OH group of donor with NAD+ or NADP+ as acceptor. The systematic name of this enzyme class is 2-deoxymugineic acid:NAD(P)+ 3-oxidoreductase. It is part of the pathway which converts the siderophore, nicotianamine, to other metal-chelating molecules in higher plants. These allow the plant to efficiently take up metals such as zinc and iron from the soil.[3]

References

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