EP FUND.OF GENERAL,ORG...-MOD.MASTERING
EP FUND.OF GENERAL,ORG...-MOD.MASTERING
8th Edition
ISBN: 9780134326061
Author: McMurry
Publisher: PEARSON CO
bartleby

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Question
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Chapter 28, Problem 28.95GP
Interpretation Introduction

Interpretation:

The overall effect of caffeine on a signal which is mediated by cAMP should be determined.

Concept Introduction:

Stimulants: These are a group of drugs with many potential therapeutic uses, but also widely used and abused recreationally. Stimulants improve mood, enhance alertness and relieve depression.

Caffeine, Nicotine, Cocaine, Ecstasy … are some examples for stimulants.

cAMP is a cyclic nucleotide and it is a second messenger which is synthesized from ATP by the action of the enzyme adenylyl cyclase. Chemically cAMP is a 3’,5’- adenosine monophosphate.

Enzymes are proteins that increase the rate of reaction by lowering the energy of activation and so they are known as “biological catalysts”

Secondary messengers are short lived intracellular signaling molecules. Elevated concentration of these type of messengers leads to rapid alteration in the activity of one or more cellular enzymes.

Phosphodiesterase is an enzyme that breaks a phosphodiester bond. This enzyme plays a key role in regulating intracellular levels of the second messenger cAMP and hence cell function.

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Students have asked these similar questions
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 28 Solutions

EP FUND.OF GENERAL,ORG...-MOD.MASTERING

Ch. 28.1 - While thinking about how a messenger molecule and...Ch. 28.2 - Prob. 28.2PCh. 28.2 - Prob. 28.3PCh. 28.2 - Prob. 28.4PCh. 28.3 - Prob. 28.5PCh. 28.3 - Prob. 28.6KCPCh. 28.4 - Prob. 28.7PCh. 28.4 - Look at the structure of thyroxine shown earlier...Ch. 28.4 - Prob. 28.1CIAPCh. 28.4 - Prob. 28.2CIAP
Ch. 28.4 - Prob. 28.9PCh. 28.5 - Prob. 25.10PCh. 28.6 - Prob. 28.11PCh. 28.6 - Prob. 28.12PCh. 28.6 - Prob. 28.13KCPCh. 28.7 - Identify the functional groups present in THC. Is...Ch. 28.7 - Prob. 28.15KCPCh. 28 - Prob. 28.16UKCCh. 28 - Prob. 28.17UKCCh. 28 - Prob. 28.18UKCCh. 28 - Prob. 28.19UKCCh. 28 - Prob. 28.20UKCCh. 28 - Prob. 28.21UKCCh. 28 - Prob. 28.22APCh. 28 - Prob. 28.23APCh. 28 - Prob. 28.24APCh. 28 - Prob. 28.25APCh. 28 - Prob. 28.26APCh. 28 - Prob. 28.27APCh. 28 - Prob. 28.28APCh. 28 - Prob. 28.29APCh. 28 - Prob. 28.30APCh. 28 - Prob. 28.31APCh. 28 - Prob. 28.32APCh. 28 - Prob. 28.34APCh. 28 - Prob. 28.35APCh. 28 - Prob. 28.36APCh. 28 - Prob. 28.37APCh. 28 - How does epinephrine reach its target tissues?Ch. 28 - Prob. 28.39APCh. 28 - Prob. 28.40APCh. 28 - Prob. 28.41APCh. 28 - Prob. 28.42APCh. 28 - What enzyme catalyzes hydrolysis of the second...Ch. 28 - Prob. 28.44APCh. 28 - Prob. 28.45APCh. 28 - Prob. 28.46APCh. 28 - Prob. 28.47APCh. 28 - Prob. 28.48APCh. 28 - Prob. 28.49APCh. 28 - Prob. 28.50APCh. 28 - Prob. 28.51APCh. 28 - Prob. 28.52APCh. 28 - Prob. 28.53APCh. 28 - Prob. 28.54APCh. 28 - Prob. 28.55APCh. 28 - Prob. 28.56APCh. 28 - Prob. 28.57APCh. 28 - Prob. 28.58APCh. 28 - Prob. 28.59APCh. 28 - Prob. 28.60APCh. 28 - Prob. 28.62APCh. 28 - Prob. 28.63APCh. 28 - Prob. 28.64APCh. 28 - Prob. 28.65APCh. 28 - Prob. 28.66APCh. 28 - Prob. 28.67APCh. 28 - Prob. 28.68APCh. 28 - Prob. 28.69APCh. 28 - Prob. 28.70APCh. 28 - Prob. 28.71APCh. 28 - Prob. 28.72APCh. 28 - Prob. 28.73APCh. 28 - Prob. 28.74APCh. 28 - Prob. 28.75APCh. 28 - Prob. 28.76APCh. 28 - Why do we have brain receptors that respond to...Ch. 28 - Prob. 28.78APCh. 28 - Prob. 28.79APCh. 28 - Prob. 28.80APCh. 28 - Prob. 28.81APCh. 28 - Prob. 28.82APCh. 28 - Prob. 28.83CPCh. 28 - Prob. 28.84CPCh. 28 - Prob. 28.85CPCh. 28 - Prob. 28.86CPCh. 28 - Prob. 28.87CPCh. 28 - Prob. 28.88CPCh. 28 - Prob. 28.89CPCh. 28 - Prob. 28.90CPCh. 28 - Prob. 28.91CPCh. 28 - Prob. 28.92CPCh. 28 - Prob. 28.93CPCh. 28 - Prob. 28.94GPCh. 28 - Prob. 28.95GP
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