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Name the coenzyme of riboflavin (B2)?

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Name the coenzyme of riboflavin (B2)?

(a) NAD or NADP

(b) FAD and FMN

(c) Coenzyme A

(d) Thiamine pyrophosphate

This question was addressed to me in an internship interview.

My query is from Enzymes in division Biomolecules and Catalysis of Life Sciences

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The correct choice is (b) FAD and FMN

To elaborate: Riboflavin is a part of vitamin B complex, its coenzyme form is a FAD (Flavin adenine dinucleotide) which involves a redox reaction. NAD is a coenzyme form of nicotinic acid, and thiamine pyrophosphate is a coenzyme of thiamine.

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