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Chapter 23: Q4p (page 1072)

How many conjugated double bonds are there in

a. FAD?

b. FADH2

Short Answer

Expert verified

Pyrrole is a much stronger acid than ammonia because of resonance.

Step by step solution

01

Conjugate bonds

Conjugated bonds mean presence of alternated single and double bonds. These bonds take part in resonance too.

02

Conjugate bonds in FAD

From the below given structure it can be seen that seven conjugate bonds are present as all the double bonds are alternate to single bond.

FAD structure

03

Conjugate bonds in

As it can be seen here only five conjugate bonds are present. Three in left ring, and two in right ring. The bond CO present between two NH is not alternate to one single bond instead has two single bonds before it so is not a conjugate bond.

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Most popular questions from this chapter

What is the product of the following reaction?

Question:Five coenzymes are required by -ketoglutarate dehydrogenase, the enzyme in the citric acid cycle that converts -ketoglutarate to succinyl-CoA.

a. Identify the coenzymes.

b.Propose a mechanism for the reaction.

\(\alpha \)-Keto acids other than \(\alpha \) -ketoglutarate can accept the amino group from pyridoxamine in enzyme catalyzed transamination reactions. What amino acids are formed when the following a-keto acids accept the amino group?

FADH2reduces ฮฑ,ฮฒ-unsaturated thioesters to saturated thioesters. The reaction is thought to take place by a mechanism that involves radicals. Propose a mechanism for this reaction.

Question: For each of the following reactions, name both the enzyme that catalyzes the reaction and the required coenzyme:
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