Concept explainers
To calculate the isoelectric point of amino acids having other ionizable
For an acidic amino acid (one with an additional acidic
|
For an basic amino acid (one with an additional basic
|
a. Indicate, which
b. In general, how does the
c. In general, how does the
(a)
Interpretation: The
Concept introduction: The chemical compounds in which carbon is bonded with acidic and basic group along with hydrocarbon side chain are known as amino acids. The amino acids are classified into acidic, basic, polar, non-polar, essential, and non-essential categories. The three word abbreviation or one word abbreviation is used for amino acids.
Answer to Problem 29.36P
As per respective formulae, the
Explanation of Solution
Glutamic acid has acidic side chain. Lysine has basic side chain. Arginine has basic side chain.
The
The
The
As per respective formulae, the
As per respective formulae, the
(b)
Interpretation: The comparison between
Concept introduction: The chemical compounds in which carbon is bonded with acidic and basic group along with hydrocarbon side chain are known as amino acids. The amino acids are classified into acidic, basic, polar, non-polar, essential, and non-essential categories. The three word abbreviation or one word abbreviation is used for amino acids.
Answer to Problem 29.36P
The
Explanation of Solution
The
The
Thus, the
The
(c)
Interpretation: The comparison between
Concept introduction: The chemical compounds in which carbon is bonded with acidic and basic group along with hydrocarbon side chain are known as amino acids. The amino acids are classified into acidic, basic, polar, non-polar, essential, and non-essential categories. The three word abbreviation or one word abbreviation is used for amino acids.
Answer to Problem 29.36P
The
Explanation of Solution
The
The
Thus, the
The
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Chapter 29 Solutions
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- 22-21 Explain why an amino acid cannot exist in an un-ionized form at any pH.arrow_forward22-91 Which amino acid does not rotate the plane of polarized light?arrow_forward22-61 Polyglutamic acid (a polypeptide chain made only of glutamic acid residues) has an a-helix conformation below pH 6.0 and a random-coil conformation above pH 6.0. What is the reason for this conformational change?arrow_forward
- 22-44 How can a protein act as a buffer?arrow_forward22-89 What kind of noncovalent interaction occurs between the following amino acids? (a) Valine and isoleucine (b) Glutamic acid and lysine (c) Tyrosine and threonine (d) Alanine and alaninearrow_forward22-62 Distinguish between intermolecular and intramolecular hydrogen bonding between backbone groups. Where in protein structures do you find one, and where do you find the other?arrow_forward
- 22-53 Do iron and zinc ions play role in protein structure? If so, what is the role for either or both?arrow_forward22-45 Proteins are least soluble at their isoelectric points. What would happen to a protein precipitated at its isoelectric point if a few drops of dilute HCl were added?arrow_forwardConsider the tripeptide tyrosylleucylisoleucine. a. Specify its structure using three-letter symbols for the amino acids. b. How many peptide bonds are present within the peptide? c. Which of the amino acid residues has the largest R group? d. Which of the amino acid residues, if any, has an acidic side chain?arrow_forward
- 22-59 What is the effect of salt bridges on the tertiary structure of proteins?arrow_forwardConsider the tripeptide leucylvalyltryptophan. a. Specify its structure using three-letter symbols for the amino acids. b. How many peptide bonds are present within the peptide? c. Which of the amino acid residues has the largest R group? d. Which of the amino acid residues, if any, has a basic side chain?arrow_forward22-42 (a) How many atoms of the peptide bond lie in the same plane? (b) Which atoms are they?arrow_forward
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