The peptides obtained from the cleavage of given peptide chain by carboxypeptidase A has to be given. Concept introduction: Amino acids are linked each other by peptide bonds is called protein (one or more peptide bonds). Peptide bonds are amide bonds, in which carbonyl group of one amino acid bonded to amino group of other amino acid. The chain of the protein is drawn in such a way that left end is occupied by free amino group (say N-terminal) and right side of the chain is occupied by carbonyl group (say C-terminal). Exopeptidases cleave peptide bonds that are not at the end. Carboxypeptidase A is an exopeptidase, which cleave the peptide bond of C-terminal amino acid except arginine and lysine.

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Answer 1

Question

Chapter 21, Problem 50P

(a)

Interpretation Introduction

Interpretation:

The peptides obtained from the cleavage of given peptide chain by carboxypeptidase A has to be given.

Concept introduction:

Amino acids are linked each other by peptide bonds is called protein (one or more peptide bonds). Peptide bonds are amide bonds, in which carbonyl group of one amino acid bonded to amino group of other amino acid. The chain of the protein is drawn in such a way that left end is occupied by free amino group (say N-terminal) and right side of the chain is occupied by carbonyl group (say C-terminal).

Exopeptidases cleave peptide bonds that are not at the end.

Carboxypeptidase A is an exopeptidase, which cleave the peptide bond of C-terminal amino acid except arginine and lysine.

(b)

Interpretation Introduction

Interpretation:

The peptides obtained from the cleavage of given peptide chain by cyanogen bromide has to be given

Concept introduction:

Amino acids are linked each other by peptide bonds is called protein (one or more peptide bonds). Peptide bonds are amide bonds, in which carbonyl group of one amino acid bonded to amino group of other amino acid. The chain of the protein is drawn in such a way that left end is occupied by free amino group (say N-terminal) and right side of the chain is occupied by carbonyl group (say C-terminal).

Cyanogen bromide cleaves the C-terminal peptide of Methionine in a peptide chain.

(c)

Interpretation Introduction

Interpretation:

The peptides obtained from the cleavage of given peptide chain by trypsin has to be given.

Concept introduction:

Amino acids are linked each other by peptide bonds is called protein (one or more peptide bonds). Peptide bonds are amide bonds, in which carbonyl group of one amino acid bonded to amino group of other amino acid. The chain of the protein is drawn in such a way that left end is occupied by free amino group (say N-terminal) and right side of the chain is occupied by carbonyl group (say C-terminal).

Endopeptidases cleave peptide bonds that are not at the end.

Trypsin is an endopeptidase, which cleave the C-side peptide bond of positively charged side chains such as arginine and lysine.

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Indicate the peptides produced from cleavage by the indicated reagent: a. His-Lys-Leu-Val-Glu-Pro-Arg-Ala-Gly-Ala by trypsin b. Leu-Gly-Ser-Met-Phe-Pro-Tyr-Gly-Val by chymotrypsin

Which of the following reagents can be used to cleave a tert-butoxycarbonyl (Boc) protecting group from a peptide? H₂/Pd CF3CO₂H Na₂CO3, H₂O LiAlH4 B

3. Provide a synthetic route to each of the following compounds. a. H2N-gly-phe-ala-CO,H from the constituent aminoacids using a solid phase synthesis b. но N3 NH2 HO, N. from and anything else C. Alanine from glycine ČF3

Answer 2

Question

Chapter 21, Problem 50P

(a)

Interpretation Introduction

Interpretation:

The peptides obtained from the cleavage of given peptide chain by carboxypeptidase A has to be given.

Concept introduction:

Amino acids are linked each other by peptide bonds is called protein (one or more peptide bonds). Peptide bonds are amide bonds, in which carbonyl group of one amino acid bonded to amino group of other amino acid. The chain of the protein is drawn in such a way that left end is occupied by free amino group (say N-terminal) and right side of the chain is occupied by carbonyl group (say C-terminal).

Exopeptidases cleave peptide bonds that are not at the end.

Carboxypeptidase A is an exopeptidase, which cleave the peptide bond of C-terminal amino acid except arginine and lysine.

(b)

Interpretation Introduction

Interpretation:

The peptides obtained from the cleavage of given peptide chain by cyanogen bromide has to be given

Concept introduction:

Amino acids are linked each other by peptide bonds is called protein (one or more peptide bonds). Peptide bonds are amide bonds, in which carbonyl group of one amino acid bonded to amino group of other amino acid. The chain of the protein is drawn in such a way that left end is occupied by free amino group (say N-terminal) and right side of the chain is occupied by carbonyl group (say C-terminal).

Cyanogen bromide cleaves the C-terminal peptide of Methionine in a peptide chain.

(c)

Interpretation Introduction

Interpretation:

The peptides obtained from the cleavage of given peptide chain by trypsin has to be given.

Concept introduction:

Amino acids are linked each other by peptide bonds is called protein (one or more peptide bonds). Peptide bonds are amide bonds, in which carbonyl group of one amino acid bonded to amino group of other amino acid. The chain of the protein is drawn in such a way that left end is occupied by free amino group (say N-terminal) and right side of the chain is occupied by carbonyl group (say C-terminal).

Endopeptidases cleave peptide bonds that are not at the end.

Trypsin is an endopeptidase, which cleave the C-side peptide bond of positively charged side chains such as arginine and lysine.

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Answer 3

Question

Chapter 21, Problem 50P

(a)

Interpretation Introduction

Interpretation:

The peptides obtained from the cleavage of given peptide chain by carboxypeptidase A has to be given.

Concept introduction:

Amino acids are linked each other by peptide bonds is called protein (one or more peptide bonds). Peptide bonds are amide bonds, in which carbonyl group of one amino acid bonded to amino group of other amino acid. The chain of the protein is drawn in such a way that left end is occupied by free amino group (say N-terminal) and right side of the chain is occupied by carbonyl group (say C-terminal).

Exopeptidases cleave peptide bonds that are not at the end.

Carboxypeptidase A is an exopeptidase, which cleave the peptide bond of C-terminal amino acid except arginine and lysine.

(b)

Interpretation Introduction

Interpretation:

The peptides obtained from the cleavage of given peptide chain by cyanogen bromide has to be given

Concept introduction:

Amino acids are linked each other by peptide bonds is called protein (one or more peptide bonds). Peptide bonds are amide bonds, in which carbonyl group of one amino acid bonded to amino group of other amino acid. The chain of the protein is drawn in such a way that left end is occupied by free amino group (say N-terminal) and right side of the chain is occupied by carbonyl group (say C-terminal).

Cyanogen bromide cleaves the C-terminal peptide of Methionine in a peptide chain.

(c)

Interpretation Introduction

Interpretation:

The peptides obtained from the cleavage of given peptide chain by trypsin has to be given.

Concept introduction:

Amino acids are linked each other by peptide bonds is called protein (one or more peptide bonds). Peptide bonds are amide bonds, in which carbonyl group of one amino acid bonded to amino group of other amino acid. The chain of the protein is drawn in such a way that left end is occupied by free amino group (say N-terminal) and right side of the chain is occupied by carbonyl group (say C-terminal).

Endopeptidases cleave peptide bonds that are not at the end.

Trypsin is an endopeptidase, which cleave the C-side peptide bond of positively charged side chains such as arginine and lysine.

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Answer 4

Question

Chapter 21, Problem 50P

(a)

Interpretation Introduction

Interpretation:

The peptides obtained from the cleavage of given peptide chain by carboxypeptidase A has to be given.

Concept introduction:

Amino acids are linked each other by peptide bonds is called protein (one or more peptide bonds). Peptide bonds are amide bonds, in which carbonyl group of one amino acid bonded to amino group of other amino acid. The chain of the protein is drawn in such a way that left end is occupied by free amino group (say N-terminal) and right side of the chain is occupied by carbonyl group (say C-terminal).

Exopeptidases cleave peptide bonds that are not at the end.

Carboxypeptidase A is an exopeptidase, which cleave the peptide bond of C-terminal amino acid except arginine and lysine.

(b)

Interpretation Introduction

Interpretation:

The peptides obtained from the cleavage of given peptide chain by cyanogen bromide has to be given

Concept introduction:

Amino acids are linked each other by peptide bonds is called protein (one or more peptide bonds). Peptide bonds are amide bonds, in which carbonyl group of one amino acid bonded to amino group of other amino acid. The chain of the protein is drawn in such a way that left end is occupied by free amino group (say N-terminal) and right side of the chain is occupied by carbonyl group (say C-terminal).

Cyanogen bromide cleaves the C-terminal peptide of Methionine in a peptide chain.

(c)

Interpretation Introduction

Interpretation:

The peptides obtained from the cleavage of given peptide chain by trypsin has to be given.

Concept introduction:

Amino acids are linked each other by peptide bonds is called protein (one or more peptide bonds). Peptide bonds are amide bonds, in which carbonyl group of one amino acid bonded to amino group of other amino acid. The chain of the protein is drawn in such a way that left end is occupied by free amino group (say N-terminal) and right side of the chain is occupied by carbonyl group (say C-terminal).

Endopeptidases cleave peptide bonds that are not at the end.

Trypsin is an endopeptidase, which cleave the C-side peptide bond of positively charged side chains such as arginine and lysine.

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Answer 5

Chapter 21, Problem 50P

(a)

Interpretation Introduction

Interpretation:

The peptides obtained from the cleavage of given peptide chain by carboxypeptidase A has to be given.

Concept introduction:

Amino acids are linked each other by peptide bonds is called protein (one or more peptide bonds). Peptide bonds are amide bonds, in which carbonyl group of one amino acid bonded to amino group of other amino acid. The chain of the protein is drawn in such a way that left end is occupied by free amino group (say N-terminal) and right side of the chain is occupied by carbonyl group (say C-terminal).

Exopeptidases cleave peptide bonds that are not at the end.

Carboxypeptidase A is an exopeptidase, which cleave the peptide bond of C-terminal amino acid except arginine and lysine.

(b)

Interpretation Introduction

Interpretation:

The peptides obtained from the cleavage of given peptide chain by cyanogen bromide has to be given

Concept introduction:

Amino acids are linked each other by peptide bonds is called protein (one or more peptide bonds). Peptide bonds are amide bonds, in which carbonyl group of one amino acid bonded to amino group of other amino acid. The chain of the protein is drawn in such a way that left end is occupied by free amino group (say N-terminal) and right side of the chain is occupied by carbonyl group (say C-terminal).

Cyanogen bromide cleaves the C-terminal peptide of Methionine in a peptide chain.

(c)

Interpretation Introduction

Interpretation:

The peptides obtained from the cleavage of given peptide chain by trypsin has to be given.

Concept introduction:

Amino acids are linked each other by peptide bonds is called protein (one or more peptide bonds). Peptide bonds are amide bonds, in which carbonyl group of one amino acid bonded to amino group of other amino acid. The chain of the protein is drawn in such a way that left end is occupied by free amino group (say N-terminal) and right side of the chain is occupied by carbonyl group (say C-terminal).

Endopeptidases cleave peptide bonds that are not at the end.

Trypsin is an endopeptidase, which cleave the C-side peptide bond of positively charged side chains such as arginine and lysine.

Answer 6

Chapter 21, Problem 50P

(a)

Interpretation Introduction

Interpretation:

The peptides obtained from the cleavage of given peptide chain by carboxypeptidase A has to be given.

Concept introduction:

Amino acids are linked each other by peptide bonds is called protein (one or more peptide bonds). Peptide bonds are amide bonds, in which carbonyl group of one amino acid bonded to amino group of other amino acid. The chain of the protein is drawn in such a way that left end is occupied by free amino group (say N-terminal) and right side of the chain is occupied by carbonyl group (say C-terminal).

Exopeptidases cleave peptide bonds that are not at the end.

Carboxypeptidase A is an exopeptidase, which cleave the peptide bond of C-terminal amino acid except arginine and lysine.

Answer 7

Chapter 21, Problem 50P

(a)

Interpretation Introduction

Interpretation:

The peptides obtained from the cleavage of given peptide chain by carboxypeptidase A has to be given.

Concept introduction:

Amino acids are linked each other by peptide bonds is called protein (one or more peptide bonds). Peptide bonds are amide bonds, in which carbonyl group of one amino acid bonded to amino group of other amino acid. The chain of the protein is drawn in such a way that left end is occupied by free amino group (say N-terminal) and right side of the chain is occupied by carbonyl group (say C-terminal).

Exopeptidases cleave peptide bonds that are not at the end.

Carboxypeptidase A is an exopeptidase, which cleave the peptide bond of C-terminal amino acid except arginine and lysine.

Answer 8

(b)

Interpretation Introduction

Interpretation:

The peptides obtained from the cleavage of given peptide chain by cyanogen bromide has to be given

Concept introduction:

Amino acids are linked each other by peptide bonds is called protein (one or more peptide bonds). Peptide bonds are amide bonds, in which carbonyl group of one amino acid bonded to amino group of other amino acid. The chain of the protein is drawn in such a way that left end is occupied by free amino group (say N-terminal) and right side of the chain is occupied by carbonyl group (say C-terminal).

Cyanogen bromide cleaves the C-terminal peptide of Methionine in a peptide chain.

Answer 9

(b)

Interpretation Introduction

Interpretation:

The peptides obtained from the cleavage of given peptide chain by cyanogen bromide has to be given

Concept introduction:

Amino acids are linked each other by peptide bonds is called protein (one or more peptide bonds). Peptide bonds are amide bonds, in which carbonyl group of one amino acid bonded to amino group of other amino acid. The chain of the protein is drawn in such a way that left end is occupied by free amino group (say N-terminal) and right side of the chain is occupied by carbonyl group (say C-terminal).

Cyanogen bromide cleaves the C-terminal peptide of Methionine in a peptide chain.

Answer 10

(c)

Interpretation Introduction

Interpretation:

The peptides obtained from the cleavage of given peptide chain by trypsin has to be given.

Concept introduction:

Amino acids are linked each other by peptide bonds is called protein (one or more peptide bonds). Peptide bonds are amide bonds, in which carbonyl group of one amino acid bonded to amino group of other amino acid. The chain of the protein is drawn in such a way that left end is occupied by free amino group (say N-terminal) and right side of the chain is occupied by carbonyl group (say C-terminal).

Endopeptidases cleave peptide bonds that are not at the end.

Trypsin is an endopeptidase, which cleave the C-side peptide bond of positively charged side chains such as arginine and lysine.

Answer 11

(c)

Interpretation Introduction

Interpretation:

The peptides obtained from the cleavage of given peptide chain by trypsin has to be given.

Concept introduction:

Amino acids are linked each other by peptide bonds is called protein (one or more peptide bonds). Peptide bonds are amide bonds, in which carbonyl group of one amino acid bonded to amino group of other amino acid. The chain of the protein is drawn in such a way that left end is occupied by free amino group (say N-terminal) and right side of the chain is occupied by carbonyl group (say C-terminal).

Endopeptidases cleave peptide bonds that are not at the end.

Trypsin is an endopeptidase, which cleave the C-side peptide bond of positively charged side chains such as arginine and lysine.

Answer 12

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Answer 13

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Answer 14

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Answer 15

Ch. 21.1 - a. Explain why, when the imidazole ring of...Ch. 21.2 - a. Which isomer(R)-alanine or (S)-alanineis...Ch. 21.2 - Prob. 4P Ch. 21.3 - Prob. 5P Ch. 21.3 - Prob. 6P Ch. 21.3 - Draw the predominant form for glutamate in a...Ch. 21.3 - a. Why is the pKa of the glutamate side chain...Ch. 21.4 - Calculate the pI of each of the following amino...Ch. 21.4 - a. Which amino acid has the lowest pI value? b....Ch. 21.4 - Prob. 12P

Solution Summary: The author explains the peptides obtained from cleavage of a given amino acid chain by carboxypeptidase A.

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Chapter 21 Solutions