© Macmillan Learning 0 Resources Solution Penalized ? Hint Submit Answer Name the tripeptide using the three letter amino acid abbreviations separated by a hyphen. (For example: Gly-Ala-Phe). H =O C -C-C name: -C-O CH₂ CH2 CH2 CH2 H3C-CH OH C=O CH3 How many peptide bonds are in this structure? peptide bonds: 2 Attempt 3

© Macmillan Learning 0 Resources Solution Penalized ? Hint Submit Answer Name the tripeptide using the three letter amino acid abbreviations separated by a hyphen. (For example: Gly-Ala-Phe). H =O C -C-C name: -C-O CH₂ CH2 CH2 CH2 H3C-CH OH C=O CH3 How many peptide bonds are in this structure? peptide bonds: 2 Attempt 3

Introductory Chemistry: An Active Learning Approach

6th Edition

ISBN:9781305079250

Author:Mark S. Cracolice, Ed Peters

Publisher:Mark S. Cracolice, Ed Peters

Chapter22: Biochemistry

Section: Chapter Questions

Problem 5E

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Similar questions

For the tripeptide SerArgIle which amino acid residues a. are hydrophilic b. are hydrophobic c. possess polar neutral R groups d. participate in two amide linkages
22-49 Based on your knowledge of the chemical properties of amino acid side chains, suggest a substitution for leucine in the primary structure of a protein that would probably not change the character of the protein very much.
Do the amino acid sequences: valine-asparagine and asparagine-valine represent the same compound? Explain.
For the tripeptide GlyAlaCys a. What amino acid is located at the peptides N-terminal end? b. What amino acid is located at the peptides C-terminal end? c. How many peptide bonds are present? d. How many amide linkages are present?
22-53 Do iron and zinc ions play role in protein structure? If so, what is the role for either or both?
22-59 What is the effect of salt bridges on the tertiary structure of proteins?
For the tripeptide AlaValGly which amino acid residues, if any, a. are hydrophilic b. are hydrophobic c. possess nonpolar R groups d. participate in two amide linkages
22-50 Is a random coil a (a) primary, (b) secondary, (c) tertiary or (d) quaternary structure? Explain.
22-85 Denaturation is usually associated with transitions from helical structures to random coils. If an imaginary process were to transform the keratin in your hair from an (-helix to a (-pleated sheet structure, would you call the process denaturation? Explain.
Consider 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?
(a) How many tripeptides can be made from glycine, alanine, and leucine, using each amino acid only once per tripeptide? (b) Write the structural formulas of these tripeptides and name them in the shorthand abbreviation used for showing amino acid sequences.
Which of the following describes the primary structure of proteins? a. The collective shape assumed by all of the chains in a protein containing multiple chains. b. The folding of an individual protein molecule. c. The regular repeated shape of the protein molecules backbone. d. The sequence of amino acids bonded together by peptide bonds.