1. Consider the reaction:succinyl-CoA succinateH3CCH₂a. What kind of reaction is being performed here?H³CCH₂b. What enzyme performs this reaction?S-COAc. What cofactors, if any, are required for this reaction?

Acetyl CoA produced from fatty acid oxidation in the hepatic cells has two possible fates: enter…

Answered: 1. Consider the reaction: succinyl-CoA…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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41.4 answer and explain
1. A biological chemist has isolated a sizable amount of a compound acetyl CoA. a. Look up the structure of acetyl CoA and provide a structure. b. The chemist then reacts this species with catalytic amount of acid in water to free CoA (coenzyme A). Using the arrow formalism, draw a sensible mechanism for the hydrolysis.
Discuss oxidative decarboxylation, using areaction from this chapter to illustrate your points.
For each step of the citric acid cycle, name the enzyme responsible for the chemical transformation that occurs and classify the enzyme type: Step 1. Step 2. Step 3. Step 4. Step 5. Step 6. Step 7. Step 8. i. oxidoreductase (oxidases, reductases, dehydrogenases) ii. transferase (transaminases, kinses) iii. hydrolase (lipases, proteases, nucleases, carbohydrases, phosphateses) iv. lyase (dehydratase, decarboxylase, deaminase, hydratase) v. isomerase (racemases, mutases) vi. ligase (synthetases, carboxylaces) Enzyme Name Enzyme Type
25. The AG" values for the two reactions are given. 1. 2. oxaloacetate + acetyl-CoA + H₂O → citrate + COASH oxaloacetate + acetate → citrate Enzymes for reactions 1 and 2 are citrate synthase and citrate lyase, respectively. Determine the AG" for the hydrolysis of acetyl-CoA acetyl-CoA + H₂O acetate + COASH + H+ plane een isoimorfbold bns (94) opg Vp1903 9911 AG¹⁰ ? AGO = -32.2 kJ/mol AG"=-1.9 kJ/mol
draw the products formed when triacylglycerol is treated with: a. H2O, H+
Figure 1 shows the catalytic triad of a-chymotrypsin. Identify A, B and C. Describe the subsequent steps of stage 1 and stage 2 of a- chymotrypsin mechanism. Illustrate with diagrams. A B CH2 H-N N: H-O Figure 1
9. The equation below depicts the first step of the citric acid cycle. H0 CoA-SH CH-C + 0=C-CO0 HO C-COO citrate s-COA ČH2-COO synthase ČH2 -CO0 Citrate Acetyl-CoA Oxaloacetate AG" = -32.2 kJ/mol a) Explain the chemical conversions that take place during this step. b) Why is this reaction energetically favorable? Explain.
Draw a stepwise mechanism for conversion of radical intermediate A to prostaglandin PGG2.
In the Enzyme Commission database system, an enzyme with the designation 4.3.2.1 would catalyze which reaction below? Select one: O a. The conversion of an alcohol to an aldehyde O b. The conversion of an alcohol to a phosphate O c. The conversion of an alcohol to an ether o d. The conversion of an alcohol to an alkene A buffer molecule is protonated at pH 9. Adding this buffer to a reaction greatly increases the rate of reaction at pH 9.0. What is true about the reaction? Select one: O a. The buffer is a specific base Ob. It is catalyzed by acid OC. It is catalyzed by base o d. The buffer is a specific acid
Part A Using abbreviations (not structures), write the reaction of coenzyme A that gives off energy (-AG). Match the items in the left column to the appropriate blanks in the equation on the right. CoA+ acetate acetyl acetyl CoA. COA acetyl Previous Answers Request Answer Submit Reset Help
Prostaglandins are a group of lipid compounds having diverse hormone-like activities in animals. They are biosynthesized from the fatty acid arachidonic acid, catalyzed by the enzyme cyclooxygenase. The biosynthesis involves via a multistep radical mechanism. Can u show me in a stepwise mechanism how it is converted from radical intermediate A to prostaglandin PGG2.

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1. Consider the reaction: succinyl-CoA succinate H3C H3C C H₂ a. What kind of reaction is being performed here? S-COA b. What enzyme performs this reaction? c. What cofactors, if any, are required for this reaction?