(a) Interpretation: The isoelecronic point of the peptide, A-K-V-I-M is to be stated. Concept introduction: The isoelectric point is the point where the pH of any amino acid is neutral. At the isoelectric point, zwitter ion is formed when the carboxyl group donates a proton to the amino group.

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Answer 1

Question

Chapter 27, Problem 27.9P

Interpretation Introduction

(a)

Interpretation:

The isoelecronic point of the peptide, A-K-V-I-M is to be stated.

Concept introduction:

The isoelectric point is the point where the pH of any amino acid is neutral. At the isoelectric point, zwitter ion is formed when the carboxyl group donates a proton to the amino group.

Interpretation Introduction

(b)

Interpretation:

The isoelecronic point of the peptide, G-D-G-L-F is to be stated.

Concept introduction:

The isoelectric point is the point where the pH of any amino acid is neutral. At the isoelectric point, zwitter ion is formed when the carboxyl group donates a proton to the amino group.

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Draw the structure of the tetrapeptide Asp-Arg-Val-Tyr. Please show the appropriate stereochemistry of the natural amino acids in the resulting peptide. Please draw all ionizable groups in their neutral form.

Net charge and isoelectric point of an amino acid with an ionizable side group.Consider the net charge and isoelectric point of an amino acid with ionizable side (R-) group.(a) Identify the acidic amino acid(s) capable of having a negatively charged carboxyl side group.(b) Identify the basic amino acid(s) capable of having a positively charged amino side group.(c) For an amino acid with a side (R-) chain that can ionize to a negative charge, derive a general expression in terms of measured pH and known pKa values of α-carboxyla-amino (pKca), α-amino(pKaa),and side group (pKRa), respectively, for the net charge of an amino acid Consider the net charge and isoelectric point of an amino acid with ionizable side (R-) group.(d) For an amino acid with a side (R-) chain that can ionize to a positive charge, derive a general expression in terms of measured pH and known pKa values ofα-carboxyl (pKca), α-amino (pKaa), and side group (pKRa), respectively, for the net charge of the amino acid.(e)…

Answer 2

Question

Chapter 27, Problem 27.9P

Interpretation Introduction

(a)

Interpretation:

The isoelecronic point of the peptide, A-K-V-I-M is to be stated.

Concept introduction:

The isoelectric point is the point where the pH of any amino acid is neutral. At the isoelectric point, zwitter ion is formed when the carboxyl group donates a proton to the amino group.

Interpretation Introduction

(b)

Interpretation:

The isoelecronic point of the peptide, G-D-G-L-F is to be stated.

Concept introduction:

The isoelectric point is the point where the pH of any amino acid is neutral. At the isoelectric point, zwitter ion is formed when the carboxyl group donates a proton to the amino group.

Expert Solution & Answer

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Answer 3

Question

Chapter 27, Problem 27.9P

Interpretation Introduction

(a)

Interpretation:

The isoelecronic point of the peptide, A-K-V-I-M is to be stated.

Concept introduction:

The isoelectric point is the point where the pH of any amino acid is neutral. At the isoelectric point, zwitter ion is formed when the carboxyl group donates a proton to the amino group.

Interpretation Introduction

(b)

Interpretation:

The isoelecronic point of the peptide, G-D-G-L-F is to be stated.

Concept introduction:

The isoelectric point is the point where the pH of any amino acid is neutral. At the isoelectric point, zwitter ion is formed when the carboxyl group donates a proton to the amino group.

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 4

Question

Chapter 27, Problem 27.9P

Interpretation Introduction

(a)

Interpretation:

The isoelecronic point of the peptide, A-K-V-I-M is to be stated.

Concept introduction:

The isoelectric point is the point where the pH of any amino acid is neutral. At the isoelectric point, zwitter ion is formed when the carboxyl group donates a proton to the amino group.

Interpretation Introduction

(b)

Interpretation:

The isoelecronic point of the peptide, G-D-G-L-F is to be stated.

Concept introduction:

The isoelectric point is the point where the pH of any amino acid is neutral. At the isoelectric point, zwitter ion is formed when the carboxyl group donates a proton to the amino group.

Expert Solution & Answer

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Answer 5

Chapter 27, Problem 27.9P

Interpretation Introduction

(a)

Interpretation:

The isoelecronic point of the peptide, A-K-V-I-M is to be stated.

Concept introduction:

The isoelectric point is the point where the pH of any amino acid is neutral. At the isoelectric point, zwitter ion is formed when the carboxyl group donates a proton to the amino group.

Interpretation Introduction

(b)

Interpretation:

The isoelecronic point of the peptide, G-D-G-L-F is to be stated.

Concept introduction:

The isoelectric point is the point where the pH of any amino acid is neutral. At the isoelectric point, zwitter ion is formed when the carboxyl group donates a proton to the amino group.

Answer 6

Chapter 27, Problem 27.9P

Interpretation Introduction

(a)

Interpretation:

The isoelecronic point of the peptide, A-K-V-I-M is to be stated.

Concept introduction:

The isoelectric point is the point where the pH of any amino acid is neutral. At the isoelectric point, zwitter ion is formed when the carboxyl group donates a proton to the amino group.

Answer 7

Chapter 27, Problem 27.9P

Interpretation Introduction

(a)

Interpretation:

The isoelecronic point of the peptide, A-K-V-I-M is to be stated.

Concept introduction:

The isoelectric point is the point where the pH of any amino acid is neutral. At the isoelectric point, zwitter ion is formed when the carboxyl group donates a proton to the amino group.

Answer 8

Interpretation Introduction

(b)

Interpretation:

The isoelecronic point of the peptide, G-D-G-L-F is to be stated.

Concept introduction:

The isoelectric point is the point where the pH of any amino acid is neutral. At the isoelectric point, zwitter ion is formed when the carboxyl group donates a proton to the amino group.

Answer 9

Interpretation Introduction

(b)

Interpretation:

The isoelecronic point of the peptide, G-D-G-L-F is to be stated.

Concept introduction:

The isoelectric point is the point where the pH of any amino acid is neutral. At the isoelectric point, zwitter ion is formed when the carboxyl group donates a proton to the amino group.

Answer 10

Expert Solution & Answer

Answer 11

Expert Solution & Answer

Answer 12

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Answer 13

Ch. 27 - Prob. 27.1P Ch. 27 - Prob. 27.2P Ch. 27 - Prob. 27.3P Ch. 27 - Prob. 27.4P Ch. 27 - Prob. 27.5P Ch. 27 - Prob. 27.6P Ch. 27 - Prob. 27.8P Ch. 27 - Prob. 27.9P Ch. 27 - Prob. 27.10P Ch. 27 - Prob. 27.11P

(a) Interpretation: The isoelecronic point of the peptide, A-K-V-I-M is to be stated. Concept introduction: The isoelectric point is the point where the pH of any amino acid is neutral. At the isoelectric point, zwitter ion is formed when the carboxyl group donates a proton to the amino group.

Solution Summary: The author explains that the isoelectric point of the A-K-V-I-M peptide is high due to the presence of more number of amino groups.

Concept explainers

Videos

(a)

Interpretation:

The isoelecronic point of the peptide, A-K-V-I-M is to be stated.

Concept introduction:

The isoelectric point is the point where the pH of any amino acid is neutral. At the isoelectric point, zwitter ion is formed when the carboxyl group donates a proton to the amino group.

(b)

Interpretation:

The isoelecronic point of the peptide, G-D-G-L-F is to be stated.

Concept introduction:

The isoelectric point is the point where the pH of any amino acid is neutral. At the isoelectric point, zwitter ion is formed when the carboxyl group donates a proton to the amino group.

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Chapter 27 Solutions

(a) Interpretation: The isoelecronic point of the peptide, A-K-V-I-M is to be stated. Concept introduction: The isoelectric point is the point where the pH of any amino acid is neutral. At the isoelectric point, zwitter ion is formed when the carboxyl group donates a proton to the amino group.

Solution Summary: The author explains that the isoelectric point of the A-K-V-I-M peptide is high due to the presence of more number of amino groups.

Concept explainers

Videos

(a) Interpretation: The isoelecronic point of the peptide, A-K-V-I-M is to be stated. Concept introduction: The isoelectric point is the point where the pH of any amino acid is neutral. At the isoelectric point, zwitter ion is formed when the carboxyl group donates a proton to the amino group.

(b) Interpretation: The isoelecronic point of the peptide, G-D-G-L-F is to be stated. Concept introduction: The isoelectric point is the point where the pH of any amino acid is neutral. At the isoelectric point, zwitter ion is formed when the carboxyl group donates a proton to the amino group.

Want to see the full answer?

Chapter 27 Solutions

(a)

Interpretation:

The isoelecronic point of the peptide, A-K-V-I-M is to be stated.

Concept introduction:

The isoelectric point is the point where the pH of any amino acid is neutral. At the isoelectric point, zwitter ion is formed when the carboxyl group donates a proton to the amino group.

(b)

Interpretation:

The isoelecronic point of the peptide, G-D-G-L-F is to be stated.

Concept introduction:

The isoelectric point is the point where the pH of any amino acid is neutral. At the isoelectric point, zwitter ion is formed when the carboxyl group donates a proton to the amino group.