
Biochemistry
9th Edition
ISBN: 9781305961135
Author: Mary K. Campbell, Shawn O. Farrell, Owen M. McDougal
Publisher: Cengage Learning
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Chapter 19, Problem 53RE
Interpretation Introduction
Interpretation:
The reason due to which the citric acid cycle is recognized as a part of aerobic
Concept introduction:
The citric acid cycle is also known as the Krebs cycle because it was first identified by Sir Hans Krebs. It takes place inside the mitochondria of the animal cell.
A process in which the electrons are transferred from
Aerobic respiration is the process in which glucose is metabolized in the presence of excess oxygen.
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The beta-lactamase hydrolyzes the lactam-ring in penicillin. Describe the mechanism
of hydrolysis, insuring to include the involvement of S, D, & K in the reaction sequence. Please help
To map the active site of beta-lactamase, the enzyme was hydrolyzed with trypsin to yield a hexapeptide (P1) with the following amino acids. Glu, Lys, Leu, Phe, Met, and Ser. Treatment of P1 with phenyl isothiocyanate yielded a PTH derivative of phenylalanine and a peptide (P2). Treatment of P1 with cyanogenbromide gave an acidic tetrapeptide (P3) and a dipeptide (P4).Treatment of P2 with 1-fluoro-2,4-dinitrobenzene, followed by complete hydrolysis, yields N-2,4-dinitrophenyl-Glu. P1, P2, and P3 contain the active site serine.
Why doesn't D in this hexapeptide not participate in the hydrolysis of the beta-lactam ring even though S, K, and D are involved in the catalyst?
To map the active site of -lactamase, the enzyme was hydrolyzed with trypsin to yield a hexapeptide (P1) with the following amino acids. Glu, Lys, Leu, Phe, Met, and Ser. Treatment of P1 with phenyl isothiocyanate yielded a PTH derivative of phenylalanine and a peptide (P2). Treatment of P1 with cyanogenbromide gave an acidic tetrapeptide (P3) and a dipeptide (P4).Treatment of P2 with 1-fluoro-2,4-dinitrobenzene, followed by complete hydrolysis, yields N-2,4-dinitrophenyl-Glu. P1, P2, and P3 contain the active site serine.
Using the experimental results described above derive the primary sequence of the active site hexapeptide. Please help!
Chapter 19 Solutions
Biochemistry
Ch. 19 - RECALL Which pathways are involved in the...Ch. 19 - RECALL How many ATPs can be produced from one...Ch. 19 - RECALL What are the different names used to...Ch. 19 - Prob. 4RECh. 19 - Prob. 5RECh. 19 - Prob. 6RECh. 19 - Prob. 7RECh. 19 - RECALL What three molecules produced during the...Ch. 19 - RECALL How many enzymes are involved in mammalian...Ch. 19 - RECALL Briefly describe the dual role of lipoic...
Ch. 19 - Prob. 11RECh. 19 - Prob. 12RECh. 19 - Prob. 13RECh. 19 - Prob. 14RECh. 19 - RECALL Why is the reaction catalyzed by citrate...Ch. 19 - RECALL What does it mean when an enzyme has the...Ch. 19 - Prob. 17RECh. 19 - RECALL With respect to stereochemistry, what is...Ch. 19 - Prob. 19RECh. 19 - Prob. 20RECh. 19 - Prob. 21RECh. 19 - RECALL What are the similarities and differences...Ch. 19 - Prob. 23RECh. 19 - Prob. 24RECh. 19 - Prob. 25RECh. 19 - RECALL Why can we say that production of a GTP is...Ch. 19 - Prob. 27RECh. 19 - RECALL ATP is a competitive inhibitor of NADH...Ch. 19 - RECALL Is the conversion of fumarate to malate a...Ch. 19 - REFLECT AND APPLY We have seen one of the four...Ch. 19 - Prob. 31RECh. 19 - Prob. 32RECh. 19 - Prob. 33RECh. 19 - Prob. 34RECh. 19 - REFLECT AND APPLY How does an increase in the...Ch. 19 - REFLECT AND APPLY How does an increase in the...Ch. 19 - Prob. 37RECh. 19 - Prob. 38RECh. 19 - Prob. 39RECh. 19 - Prob. 40RECh. 19 - REFLECT AND APPLY How could the expression milking...Ch. 19 - Prob. 42RECh. 19 - Prob. 43RECh. 19 - Prob. 44RECh. 19 - BIOCHEMICAL CONNECTIONS Why is it possible for...Ch. 19 - RECALL Describe the various purposes of the citric...Ch. 19 - REFLECT AND APPLY The intermediates of glycolysis...Ch. 19 - Prob. 48RECh. 19 - REFLECT AND APPLY Many soft drinks contain citric...Ch. 19 - RECALL NADH is an important coenzyme in catabolic...Ch. 19 - BIOCHEMICAL CONNECTIONS What are the anaplerotic...Ch. 19 - REFLECT AND APPLY Why is acetyl-CoA considered the...Ch. 19 - Prob. 53RE
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