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The cofactor of nitrate reductase is...

The cofactor of nitrate reductase is

A

Cu

B

Zn

C

Ca

D

Mo

Text Solution

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The correct Answer is:
D
Reduction of nitrate to nitrite is carried out by the agency of an inducible enzyme called nitrate reductase. The enzyme is a molybdoflavoprotein (with a cofactor Mo). It requires a reduced coenzyme (NADH or NADPH) for its activity the reduced coenzyme is brought in contact with nitrate by FAD or FMN.
`NO_(3)^(-)+NAD(P)H+H^(+)underset(FAD//FMN)overset("Nitrate reductase")toNO_(2)^(-)+H_(2)O+NADP^(+)`
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