Q.

The enzyme pyruvate dehydrogenase involved in the link reaction requires the participation of the following for its functioning.

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a

Mg 2+,NAD + and CoA

b

Mg 2+,FAD + and CoA

c

FAD+ ,Mn 2+ only

d

Mg 2+,NAD + only

answer is C.

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Detailed Solution

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Link reaction is oxidative decarboxylation . During link reaction pyruvic acid undergoes oxidative decarboxylation and forms acetyl Co-A . Products formed in this reaction are CO2 and NADH.

The enzyme requires Mg 2+,NAD + and CoA. Additionally it also requires thymine pyrophosphateTPP and lipoic acid.

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The enzyme pyruvate dehydrogenase involved in the link reaction requires the participation of the following for its functioning.