Organic Chemistry
9th Edition
ISBN: 9781305080485
Author: John E. McMurry
Publisher: Cengage Learning
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Chapter 29.SE, Problem 49AP
Interpretation Introduction
Interpretation:
To Write a mechanism for the conversion of α-ketoglutarate to succinyl CoA in step 4 of the citric acid cycle.
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Students have asked these similar questions
Step 7 of the citric acid cycle is shown. Which statement best describes what occurs
in this step?
CO₂
1
CH
||
CH
+ H₂O
CO₂
fumarate
CO₂™
fumarase HO C-H
CH₂
CO₂
malate
A)
Fumarate undergoes hydrogenation with hydrogens and electrons provided
by the enzyme fumarase.
B) Fumarate undergoes hydration with the aid of the enzyme fumarase.
C) Fumarate undergoes hydrolysis with the aid of the enzyme fumarase.
D) Fumarate undergoes reduction with the aid of the cofactor fumarase.
The enzyme that catalyzes reaction below can be classified as:
NAD*
NADH + H*
Но-
H-Ć-
Н—с—н
H-
malate
dehydrogenase
Oxaloacetate
Malate
A portion of the citric acid cycle is shown below. What are the
identities of A and B?
citrate → A→isocitrate → B
A = cis-aconitate; B = a-ketoglutarate
A = malate; B = fumarate
A = cis-aconitate; B = oxaloacetate
A = a-ketoglutarate; B = succinate
A = succinate; B = a-ketoglutarate
Chapter 29 Solutions
Organic Chemistry
Ch. 29.1 - Prob. 1PCh. 29.3 - Write the equations for the remaining passages of...Ch. 29.3 - Prob. 3PCh. 29.4 - Write a mechanism for the dehydration reaction of...Ch. 29.4 - Evidence for the role of acetate in fatty-acid...Ch. 29.4 - Does the reduction of acetoacetyl ACP in step 6...Ch. 29.5 - Prob. 7PCh. 29.5 - Look at the entire glycolysis pathway, and make a...Ch. 29.6 - Prob. 9PCh. 29.7 - Prob. 10P
Ch. 29.7 - Write mechanisms for step 2 of the citric acid...Ch. 29.7 - Prob. 12PCh. 29.8 - Prob. 13PCh. 29.9 - Write all the steps in the transamination reaction...Ch. 29.9 - What -keto acid is formed on transamination of...Ch. 29.9 - Prob. 16PCh. 29.SE - Prob. 17VCCh. 29.SE - Identify the following intermediate in the citric...Ch. 29.SE - The following compound is an intermediate in the...Ch. 29.SE - Prob. 20VCCh. 29.SE - In the pentose phosphate pathway for degrading...Ch. 29.SE - Prob. 22MPCh. 29.SE - One of the steps in the pentose phosphate pathway...Ch. 29.SE - One of the steps in the pentose phosphate pathway...Ch. 29.SE - Prob. 25MPCh. 29.SE - Prob. 26MPCh. 29.SE - Prob. 27MPCh. 29.SE - Prob. 28MPCh. 29.SE - Prob. 29MPCh. 29.SE - Prob. 30MPCh. 29.SE - Prob. 31MPCh. 29.SE - Prob. 32APCh. 29.SE - Prob. 33APCh. 29.SE - Prob. 34APCh. 29.SE - Prob. 35APCh. 29.SE - Prob. 36APCh. 29.SE - Prob. 37APCh. 29.SE - Prob. 38APCh. 29.SE - Prob. 39APCh. 29.SE - Prob. 40APCh. 29.SE - Prob. 41APCh. 29.SE - Prob. 42APCh. 29.SE - Prob. 43APCh. 29.SE - Prob. 44APCh. 29.SE - Prob. 45APCh. 29.SE - Prob. 46APCh. 29.SE - Prob. 47APCh. 29.SE - Prob. 48APCh. 29.SE - Prob. 49APCh. 29.SE - Prob. 50APCh. 29.SE - In glycerol metabolism, the oxidation of...Ch. 29.SE - Prob. 52APCh. 29.SE - Prob. 53APCh. 29.SE - Prob. 54APCh. 29.SE - In step 7 of fatty-acid biosynthesis (Figure...Ch. 29.SE - Prob. 56AP
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- One of the steps that occur during the synthesis of ketone bodies is shown below. OH D-beta-hydroxybutyrate Dehydrógenase .coo coo0 H3C cooo Нас acetoacetate D-beta-hydroxybutyrate Does this process require FAD or NAD*, FADH2 or NADH as the reactant coenzyme? Explain your answer in a few words.arrow_forwardIn the citric acid cycle, a - ketoglutarate dehydrogenase catalyzes the reaction from a - ketoglutarate to Succinyl CoA. Given this reaction, calculate for the enthalpy of formation of the product using (a) Hess's Law, (b) standard enthalpies of formation and (c) mean bond enthalpies. Show your complete solution. COA-S OOC CH2 CH2 + NAD++ COA + CO2 + NADH CH2 a-ketoglutarate CH2 dehydrogenase COO a-ketoglutarate COO Succinyl CoAarrow_forwardThe rate-limiting step is a metabolic pathway is the slowest step which determines the overall rate of the other reactions in the pathway. In glycolysis, the rate limiting step is a phosphorylation reaction where phosphofructokinase (PFK-1) catalyzes the reaction fructose-6-bisphosphate -> fructose-1,6-bisphosphate, the same step in gluconeogenesis. Select one: The statement is FALSE. The statement is TRUE.arrow_forward
- Can you help to solve this?arrow_forwardMost fatty acids have an even number of carbons and, therefore, are completely metabolized to acetyl-CoA. A fatty acid with an odd number of carbons is metabolized to acetyl-CoA and one equivalent of propionyl-CoA. The following two reactions convert propionyl-CoA into succinyl-CoA, a citric acid cycle intermediate, so it can be further metabolized. Each of the reactions requires a coenzyme. Identify the coenzyme for each step. From what vitamins are the coenzymes derived?arrow_forwardMost fatty acids have an even number of carbons and, therefore, are completely metabolized to acetyl-CoA. A fatty acid with an odd number of carbons is metabolized to acetyl-CoA and one equivalent of propionyl-CoA. The following two reactions convert propionyl-CoA into succinyl-CoA, a citric acid cycle intermediate, so it can be further metabolized. Each of the reactions requires a coenzyme. Identify the coenzyme for each step. From what vitamins are the coenzymes derived?arrow_forward
- The TCA cycle (or tricarboxylic acid cycle) breaks down acetyl CoA and captures the energy in high energy molecules. For each molecule of acetyl CoA, the TCA cycle yields A) 1 ATP and 1 NADH B) 1 CO₂ and 2 NADH C) 4 CO₂ and 6 NADH and 2 FADH2 2 D) 2 CO₂ and 3 NADH and 1 FADH₂ E) 2 CO₂ and 3 NADH and and 1 FADH₂ and 1 ATParrow_forwardRefer to the following reaction. The substrate of this reaction is called through a mechanism called "Feed Forward Activation". (A) Phosphoenolpyruvate, Fructose 1,6-bisphosphate Lactate, NADH OPO₂²- ADP ATP J = 4 O H₂C H₂C 2-phosphoglycerate, AMP Glyceraldehyde 3-phosphate, ATP and the enzyme is activated by high conc. ofarrow_forwardPlace the steps of glycolysis in the order that they occur. Last step Answer Bank Glucose is phosphorylated by hexokinase. Glyceraldehyde-3-phosphate is converted to 1,3-bisphosphoglycerate. Aldolase cleaves the six-carbon sugar into two three-carbon sugars. Phosphoenolpyruvate is converted to pyruvate. 3-Phosphoglycerate is formed. Fructose-6-phosphate is phosphorylated by phosphofructokinase. First steparrow_forward
- In the first step of B-Oxidation, R Η Η Ο B HH -S-COA Acyl COA In the third step of B-Oxidation, ОНН О T || R-C-C-C -S-COA Acyl COA dehydrogenase L-B-Hydroxyacyl CoA R- B-Hydroxyacyl CoA dehydrogenase H H Η Ο R- trans-Enoyl COA is the oxidizing agent. -S-COA is the oxidizing agent. || -CH₂-C S-CoA B-Ketoacyl COAarrow_forwardFatty acids and triglycerides are an important source of nutrition and a dense form of stored energy. Digestion of fats yields more energy per gram than digestion of carbohydrates. Each turn on the B-oxidation spiral results in the formation of a new acetyl COA molecule. This molecule can then be used to generate more energy in A) fatty acid synthesis B) ketolysis C) glycolysis D) tricarboxylic acid cycle E) oxidative phosphorylationarrow_forwardNonearrow_forward
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