Biochemistry
Biochemistry
9th Edition
ISBN: 9781319114671
Author: Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher: W. H. Freeman
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Chapter 23, Problem 13P
Interpretation Introduction

(a)

Interpretation:

The balanced equation involved in the transformation of aspartate into glucose through an intermediate oxaloacetatemolecule and coenzymes should be written.

Concept introduction:

Transamination is also known as an amino transfer. It is a chemical reaction that takes place between two molecules. One is an amino acid that contains an amine or -NH2 group and the other is a keto acid having a keto (=O) group.

Interpretation Introduction

(b)

Interpretation:

The balanced equation involved in the transformation of aspartate into oxaloacetate through an intermediate fumarate molecule should be written.

Concept introduction:

The urea cycle is a series of biochemical reactions which involve the formation of urea (NH2)2CO from the ammonia (NH3). It is also known as the ornithine cycle. It helps in the excretion of toxic ammonia by converting into urea. This cycle takes place in ureotelic organisms.

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Long explanations are not needed. Direct answers would suffice.   a. High concentration of glucose 6-phosphate is inhibitory to the enzyme hexokinase. I. True II. False   b. Which compound is formed when NAH reduces pyruvate (anaerobic condition)? I. lactate II. alpha-ketoglutarate III. glucose IV. oxaloacetate
G. ENZYME CLASSIFICATION. Identify the main class of enzymes used to catalyzed the following reactions: 1. Lactate dehydrogenase: NADH+H NAD HC-OH CH3 CH Pynnte Lactate 2. Methylmalonyl-CoA mutase: CH CH SCOA CH,CH, SCOA coenzyme B12 COO COO methylmalonyl-CoA succinyl-CoA 3. Enolase: 0. H–Ċ–0–P–0- C-0–P-0- + H,0 HO–CH, CH 6 Phosphoenolpyruvate 2-Phosphoglycerate 4. Chymotrypsin: -0–CH,CH3 + H2O - RCOOH + HOCH,CH3 5. Pyruvate carboxylase: coo • co, • ATP + H,0 H-C-H . ADP + P, + 2H čoo CH, Pyruvate Oxaleacetate
Draw Gluconeogenesis.  Please make sure to state all the enzymes and co-factors for each step of the pathway. note you are responsible for all the enzymes for each step, even though it is not stated on the slide.
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