FUNDAMENTALS OF BIOCHEMISTRY WPNG 1-SEME
5th Edition
ISBN: 9781119750192
Author: Voet
Publisher: WILEY
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Question
Chapter 21, Problem 6E
Summary Introduction
To write: A balanced equation for the given deamination reaction.
Concept introduction:
The elimination of an
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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 21 Solutions
FUNDAMENTALS OF BIOCHEMISTRY WPNG 1-SEME
Ch. 21 - Prob. 1ECh. 21 - 2. The compound shown below inhibits an...Ch. 21 - Prob. 3ECh. 21 - Prob. 4ECh. 21 - 5. Explain why it was advantageous for human...Ch. 21 - Prob. 6ECh. 21 - 7. Which of the 20 “standard” amino acids are (a)...Ch. 21 - 8. Alanine, cysteine, glycine, serine, and...Ch. 21 - Prob. 9ECh. 21 - 10. Draw the amino acid-Schiff base that forms in...
Ch. 21 - Prob. 11ECh. 21 - Prob. 12ECh. 21 - 13. Which three mammalian enzymes can potentially...Ch. 21 - Prob. 14ECh. 21 - Prob. 15ECh. 21 - Prob. 16ECh. 21 - Prob. 17ECh. 21 - Prob. 18ECh. 21 - Prob. 19ECh. 21 - 20. From what amino acid is the signaling molecule...Ch. 21 - Prob. 21ECh. 21 - Prob. 22ECh. 21 - 23. Describe the reactions that convert...Ch. 21 - Prob. 24ECh. 21 - 25. One of the symptoms of kwashiorkor, the...Ch. 21 - 26. From what amino acid is melatonin derived?...Ch. 21 - Prob. 27ECh. 21 - 28. Nitrosomonas is a photophobic (light-avoiding)...Ch. 21 - Prob. 29CQCh. 21 - Prob. 30CQCh. 21 - 31. (a) How many ATP equivalents are consumed by...Ch. 21 - Prob. 32CQCh. 21 - Prob. 33CQCh. 21 - Prob. 34CQCh. 21 - Prob. 35CQCh. 21 - Prob. 36CQCh. 21 - 37. The nucleotide deoxyuridylate (dUMP) is...Ch. 21 - 38. Proliferating cells require NADPH for...Ch. 21 - 39. Mouse embryonic stem cells produce high levels...Ch. 21 - 40. Rice plants that have been engineered to...Ch. 21 - Prob. 41CQCh. 21 - Prob. 1MTE
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