Organic Chemistry (8th Edition)
8th Edition
ISBN: 9780134042282
Author: Paula Yurkanis Bruice
Publisher: PEARSON
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Chapter 23.6, Problem 20P
Interpretation Introduction
Interpretation:
The enzyme catalysed reaction and the names of the required coenzymes should be determined.
Concept introduction:
In an enzyme catalysed reaction that requires coenzymes
Biotin (vitamin H) is the coenzyme required by enzymes that catalyse the carboxylation of a carbon adjacent to carbonyl group.
Coenzymes
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Choose the enzyme and cofactors involved in the reaction of
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OPO
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glyceraldehyde-3-phosphate
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phosphoglycerate
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phosphoglycerate
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Question 5 of 16
Acetyl-CoA carboxylase is an important enzyme in fatty acid synthesis. It attaches
carbon dioxide to acetyl-CoA to form malonyl-CoA. What coenzyme is covalently
attached to acetyl-CoA carboxylase?
A) thiamine pyrophosphate
B) lipoic acid
C) pyridoxal phosphate
D) biotin
E) tetrahydrofolate
Question 28
CHOH CHOH
A
CHOH
CHOH
1
CH2
CHOH
OH
OH
OH
CH
3
CHOH
OH
OH
он
CH
он
он
B
2
OH
CH
Which lettered subunit is the reducing end?
O A
В
There is more than one reducing end on this sugar structure
Chapter 23 Solutions
Organic Chemistry (8th Edition)
Ch. 23.1 - Prob. 2PCh. 23.1 - Prob. 3PCh. 23.2 - How many conjugated double bonds are there in a....Ch. 23.2 - Instead of adding to the 4a position and...Ch. 23.2 - Prob. 7PCh. 23.3 - Prob. 8PCh. 23.3 - Acetolactate synthase is another TPP-requiring...Ch. 23.3 - Acetolactate synthase transfers the acyl group of...Ch. 23.3 - Prob. 12PCh. 23.5 - Which compound is more easily decarboxylated?
Ch. 23.5 - Prob. 14PCh. 23.5 - Explain why the ability of PLP to catalyze an...Ch. 23.5 - Explain why the ability of PLP to catalyze an...Ch. 23.5 - The enzyme that catalyzes the C C bond cleavage...Ch. 23.5 - Propose a mechanism for the ,-elimination reaction...Ch. 23.6 - Ethanolamine ammonia lyase, a coenzyme...Ch. 23.6 - Prob. 20PCh. 23.7 - How do the structure of tetrahydrofolate and...Ch. 23.7 - What is the source of the methyl group in...Ch. 23.8 - Thiols such as ethanethiol and propanethiol can be...Ch. 23 - How does the metal ion in carboxypeptidase A...Ch. 23 - Prob. 24PCh. 23 - Prob. 25PCh. 23 - For each of the following reactions, name both the...Ch. 23 - Prob. 27PCh. 23 - When transaminated, the three branched-chain amino...Ch. 23 - What acyl groups have we seen transferred by...Ch. 23 - Propose a mechanism for the following reaction:Ch. 23 - Draw the products of the following reaction, where...Ch. 23 - When UMP is dissolved in T2O, exchange of T for H...Ch. 23 - Dehydratase is a PLP-requiring enzyme that...Ch. 23 - In addition to the reaction mentioned in Section...Ch. 23 - PLP can catalyze both ,-elimination reactions...Ch. 23 - The glycine cleavage system is a group of four...Ch. 23 - Prob. 37PCh. 23 - FADH2 reduces , -unsaturated thioesters to...
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