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Chapter 24: Q13P (page 1113)

What coenzyme is required to convert pyruvate to acetaldehyde?

Short Answer

Expert verified

Thiamine pyrophosphate is required for the conversion of pyruvate to acetaldehyde.

Step by step solution

01

Step-by-Step SolutionStep 1: Conversion of pyruvate to acetaldehyde

Pyruvate is converted into acetaldehyde by the process of decarboxylation.The reaction proceeds in the presence of Mg2+ion and in the presence of pyruvate decarbocarboxylase. It means the enzyme pyruvate decarboxylase is an enzyme that catalyzes the decarboxylation of pyruvic acid to acetaldehyde.

02

Functional group change in pyruvate to lactate conversion

Functional group change

If we observe the above reaction then CO2group from pyruvate is lost and we get acetaldehyde as a product in the presence of thiamine pyrophosphate.

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Most popular questions from this chapter

Why does the OH group add to the 尾-carbon rather than to the 伪-carbon in the second reaction in the 尾-oxidation of fats?

UDP- galactose- 4- epimerase converts UDP- galactose to UDP- glucose. The reaction requires NAD+ as a coenzyme.

a. Propose a mechanism for the reaction.

b. Why is the enzyme called an epimerase?

UDP-galactose UDP- glucose

Which carbon atoms of glucose end up as a carboxyl group in pyruvate?

Explain why the conversion of pyruvate to lactate is a reversible reaction, but the conversion of pyruvate to acetaldehyde is not reversible.

Palmitic acid is a 16-carbon saturated fatty acid. How many molecules of acetyl-CoA are formed from one molecule of palmitic acid?
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