please help 1. On a blank page you need to diagram the oxidation of the fatty acid 16:2 (49,12) to acetyl-CoA via B-oxidation. The diagram needs to include the following:a. B-oxidation:i. A diagram of the 1st, the 4th, and the 5th round of the pathway showing thestructures of the fatty acids produced by each step in each round of the pathway.Please also list the names of the enzymes used as well as the coenzymes (coenzymestructures are not needed).ii. Showing the correct stoichiometry (per 16:2(49,12)) of the following metabolites.Note this stoichiometry includes ALL of the needed rounds of B-oxidation to convert16:2(49,12) acetyl-CoA. It does not include the CAC1. FAD/FADH₂2. NAD+/NADH3. Acetyl-CoA

Here we are considering the fatty acid . This means that the fatty acid has 16 carbons and 2 double…

Answered: On a blank page you need to diagram the…

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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Consider the docosanoic acid, C21H43CO2H a. Label the a and B carbons b. Draw the acyl CoA derived from this fatty acid c. How many acetyl CoA molecules are formed by complete B-oxidation? d. How many cycles of B-oxidation are needed for complete oxidation? e. How many molecules of ATP are formed from the complete catabolism of this fatty acid?
1. Explain the reaction mechanism involved how glucogenic amino acids can yield either a pyruvic acid or an oxaloacetic acid. In what pathway will pyruvic or oxaloacetic acid be used and why is this pathway important? 2. Discuss the reaction mechanism involved how the -NH2 groups of amino acids are being metabolized. 3. Explain why gluconeogenesis under conditions of starvation or diabetes breaks down body proteins. Complete answer please. Thank you. |
1. Consider the oxidation of the fatty acid with the common name arachidic acid. a. Draw the structure of arachidic acid. b. How many turns of the fatty acid oxidation cycle is required for the complete oxidation of arachidic acid? c. How many moles of ATP are formed from one mole of arachidic acid if the acetyl CoA produced go to the citric acid cycle and oxidative phosphorylation? Assume 1 mole of NADH is equivalent to 3 moles ATP and 1 mole FADH2 is equivalent to 2 moles of ATP. Show how you arrived at your answer
Define beta-oxidation of fatty acids? Describe in detail three different steps of beta-oxidation of FAs.
Show the structure of each intermediate in the conversion of b-hydroxybutyryl-ACP to butyryl-ACP by the fatty acid synthetase complex. Show where cofactors participate. In your first intermediate, circle the carbon atoms derived from malonyl-CoA.
A. The inhibitor constants for three inhibitors of por- cine citrate synthase are summarized in the table on the right. The compounds were all determined to bind in the active site as competitive inhibitors of acetyl-CoA. Because they bind as competitive inhibitors, all three inhibitors must exhibit structural similarity to some part of acetyl-CoA. Look up in the textbook the structural formu- las for Coenzyme A, ATP, and NADH. What is the largest structural fragment of each inhibitor that is responsible for competitive inhibition? Draw the molecular fragment common to each inhibitor that competes with the binding of acetyl-CoA in the active site of citrate synthase. Bromoacetyl-CoA ATP NADH K₁ (μM) 25.7 6800 8300 B While the inhibitor constants listed in part (b) above were determined in vitro for purified citrate synthase, does their inhibitory action have any relevance to the flux of metabolites through the TCA cycle in vivo? If so, explain.
Consider the complete oxidation of one mole of simple TAG containing lignoceric acid residues (24:0). 1. For one mole of the fatty acid residue, determine the following: a. ATP yield obtained from the oxidation of acetyl CoA entering the TCA cycle and ETC I b. ATP yield obtained from NADH coming from the complete ß-oxidation of the fatty acid residue c. ATP yield obtained from FADH₂ coming from the complete ß-oxidation of the fatty acid residue d. net ATP yield of ATP in the complete oxidation of the fatty acid residue 2. What is the net ATP yield for the complete oxidation of all the fatty acid residues of the simple TAG? (Note: glycerol backbone is not included) REMINDER: Answer the following items using numerical value only (e.g. 1, not "1 ATP")
Consider the complete oxidation of one mole of simple TAG containing behenic acid residues (22:0). I. For one mole of the fatty acid residue, determine the following: a. What is the number of ATP yield obtained from the oxidation of acetyl CoA entering the TCA cycle and ETC b. What is the number of ATP yield obtained from NADH coming from the complete β-oxidation of the fatty acid residue c. What is the number of ATP yield obtained from FADH2 coming from the complete β-oxidation of the fatty acid residue d. What is the number of net ATP yield of ATP in the complete oxidation of the fatty acid residue II. What is the net ATP yield for the complete oxidation of all the fatty acid residues of the simple TAG? (Note: glycerol backbone is not included)
Consider the complete oxidation of one mole of simple TAG containing behenic acid residues (22:0). I. For one mole of the fatty acid residue, determine the following: a. ATP yield obtained from the oxidation of acetyl CoA entering the TCA cycle and ETC b. ATP yield obtained from NADH coming from the complete β-oxidation of the fatty acid residue c. ATP yield obtained from FADH2 coming from the complete β-oxidation of the fatty acid residue
Consider the complete oxidation of one mole of simple TAG containing behenic acid residues (22:0). I. For one mole of the fatty acid residue, determine the following: a. ATP yield obtained from the oxidation of acetyl CoA entering the TCA cycle and ETC b. ATP yield obtained from NADH coming from the complete β-oxidation of the fatty acid residue c. ATP yield obtained from FADH2 coming from the complete β-oxidation of the fatty acid residue d. net ATP yield of ATP in the complete oxidation of the fatty acid residue II. What is the net ATP yield for the complete oxidation of all the fatty acid residues of the simple TAG? (Note: glycerol backbone is not included)
Consider the complete oxidation of one mole of the fatty acyl CoA of myristic acid (14:0). Determine the following (Type the numerical value only - e.g. 1): 1. rounds of B-oxidation 2. total no. of acetyl CoA produced 3. total no. of NADH produced from all rounds of B-oxidation 4. total no. of FADH2 produced from all rounds of B-oxidation 5. total no. of NADH produced from the oxidation of all acetyl CoA in the TCA cycle 6. total no. of FADH, produced from the oxidation of all acetyl CoA in the TCA cycle 7. total ATP yield
(i) Consider a preparation that contains all the enzymes and cofactors necessary for fatty acid biosynthesis from acetyl-CoA and malonyl-CoA. If [2-H] acetyl-CoA labeled with deuterium, the heavy isotope of hydrogen and excess of unlabeled malonyl-CoA are added as substrates, where will you find these labeled deuterium atoms in a molecule of palmitate synthesized? Explain. S-COA (ii) Describe the steps involved in the synthesis of palmitic acid starting from acetyl-CoA and malonyl-CoA.

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