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 20, Problem 36P
Interpretation Introduction
Interpretation:
The deficiencies in glucose 6-phosphate dehydrogenase frequently present as anemia.
Concept introduction:
The deficiency of glucose-6-phosphate dehydrogenase is a form of genetic disorder found mostly in males. The condition affects red blood cells carrying oxygen from the lungs to the tissues all through the body. In individuals affected with anemia the defect in the enzyme glucose-6-phosphate dehydrogenase brings about premature breakdown of RBCs and is commonly known as hemolysis.
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Pernicious anemia. Purine biosynthesis is impaired by vitamin B12
B12 deficiency. Why? How might fatty acid and amino acid
metabolism also be affected bya vitamin B12B12 deficiency?
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
BIOCHEMISTRY. Could glycerol be used to regenerate the OAA for maintenance of TCA cycle activity? Yes or No? Explain.
Chapter 20 Solutions
Biochemistry
Ch. 20 - Prob. 1PCh. 20 - Prob. 2PCh. 20 - Prob. 3PCh. 20 - Prob. 4PCh. 20 - Prob. 5PCh. 20 - Prob. 6PCh. 20 - Prob. 7PCh. 20 - Prob. 8PCh. 20 - Prob. 9PCh. 20 - Prob. 10P
Ch. 20 - Prob. 11PCh. 20 - Prob. 12PCh. 20 - Prob. 13PCh. 20 - Prob. 14PCh. 20 - Prob. 15PCh. 20 - Prob. 16PCh. 20 - Prob. 17PCh. 20 - Prob. 18PCh. 20 - Prob. 19PCh. 20 - Prob. 20PCh. 20 - Prob. 21PCh. 20 - Prob. 22PCh. 20 - Prob. 23PCh. 20 - Prob. 24PCh. 20 - Prob. 25PCh. 20 - Prob. 26PCh. 20 - Prob. 27PCh. 20 - Prob. 28PCh. 20 - Prob. 29PCh. 20 - Prob. 30PCh. 20 - Prob. 31PCh. 20 - Prob. 32PCh. 20 - Prob. 33PCh. 20 - Prob. 34PCh. 20 - Prob. 35PCh. 20 - Prob. 36PCh. 20 - Prob. 37PCh. 20 - Prob. 38PCh. 20 - Prob. 39PCh. 20 - Prob. 40PCh. 20 - Prob. 41PCh. 20 - Prob. 42PCh. 20 - Prob. 43PCh. 20 - Prob. 44PCh. 20 - Prob. 45PCh. 20 - Prob. 46PCh. 20 - Prob. 47PCh. 20 - Prob. 48P
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