Connect 1-Semester Online Access for Principles of General, Organic & Biochemistry
2nd Edition
ISBN: 9780077633707
Author: Janice Smith
Publisher: Mcgraw-hill Higher Education (us)
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Textbook Question
Chapter 16.4, Problem 16.8P
Identify the N-terminal and C-terminal amino acid in each peptide.
- a. Arg–His–Asn–Tyr
- b. Val–Thr–Pro–Phe
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C. AMINO ACIDS AND PEPTIDES
Consider the structure of the peptide, Asn-Gln-Gly-Ala.
H₂N.
OH
Asn-Gln-Gly-Ala
NH₂
1. How many peptide bonds are present?
2. What is the N-terminal amino acid? Provide the three-letter name.
3. What is the C-terminal amino acid? Provide the three-letter name.
H₂N,
Identity the amino acids in the peptide below. Which amino acid is at the C-terminal end?
H.
H3C H
H CH2OH
This amino acid belongs to a "basic amino acid" (at neutral pH).
Molecule "A"
COO™
I
H₂N-C-H
CH₂
Molecule "D"
COO
H₂N-C-H
CH₂
H₂N
O structure A
O
O
structure B
structure C
structure D
structure E
structure F
Molecule "B"
COO™
+
H₂N-C-H
H-C-OH
CH 3
Molecule "E"
COO
H₂N-C-H
CH₂
C NH
C-N
CH
Molecule "C"
COO™
H₂N-C-H
CH₂
OH
Molecule "F"
COO™
H₂N-C-H
CH₂
|
COO™
Chapter 16 Solutions
Connect 1-Semester Online Access for Principles of General, Organic & Biochemistry
Ch. 16.2 - In addition to the amino and carboxyl groups, what...Ch. 16.2 - How do the OH groups in Ser, Thr, and Tyr differ?Ch. 16.2 - Draw both enantiomers of each amino acid in...Ch. 16.2 - Which of the following amino acids is naturally...Ch. 16.3 - Draw the structure of the amino acid valine at...Ch. 16.3 - Identify the amino acid shown with all uncharged...Ch. 16.3 - Draw the positively charged, neutral, and...Ch. 16.4 - Identify the N-terminal and C-terminal amino acid...Ch. 16.4 - (a) Identify the N-terminal amino acid in the...Ch. 16.4 - Identify the individual amino acids in each...
Ch. 16.4 - Prob. 16.11PCh. 16.5 - Prob. 16.12PCh. 16.6 - Prob. 16.13PCh. 16.6 - Draw the structures of each pair of amino acids...Ch. 16.6 - The fibroin proteins found in silk fibers consist...Ch. 16.7 - Prob. 16.16PCh. 16.7 - Prob. 16.17PCh. 16.8 - Prob. 16.18PCh. 16.8 - Prob. 16.19PCh. 16.8 - Prob. 16.20PCh. 16.9 - Prob. 16.21PCh. 16.9 - Prob. 16.22PCh. 16.9 - The nerve gas sarin acts as a poison by covalently...Ch. 16.10 - Prob. 16.24PCh. 16 - Prob. 16.25UKCCh. 16 - Prob. 16.26UKCCh. 16 - For each amino acid: [1] draw the L enantiomer in...Ch. 16 - For each amino acid: [1] give the name; [2] give...Ch. 16 - For the given tripeptide: (a) identify the amino...Ch. 16 - For the given tripeptide: (a) identify the amino...Ch. 16 - Label the regions of secondary structure in the...Ch. 16 - Label the regions of secondary structure in the...Ch. 16 - What type of interactions occur at each of the...Ch. 16 - Using the given representations for an enzyme and...Ch. 16 - Naturally occurring amino acids are L--amino...Ch. 16 - Why do neutral amino acids exist as zwitterions...Ch. 16 - The amino acid alanine is a solid at room...Ch. 16 - Why is phenylalanine water soluble but...Ch. 16 - Draw the structure of a naturally occurring amino...Ch. 16 - Draw the structure of a naturally occurring amino...Ch. 16 - For each amino acid: [1] draw the l enantiomer in...Ch. 16 - For each amino acid: [1] draw the l enantiomer in...Ch. 16 - Draw both enantiomers of each amino acid and label...Ch. 16 - Which of the following Fischer projections...Ch. 16 - For each amino acid: [1] give the name; [2] give...Ch. 16 - For each amino acid: [1] give the name; [2] give...Ch. 16 - Draw the amino acid leucine at each pH: (a) 6; (b)...Ch. 16 - Draw the amino acid isoleucine at each pH: (a) 6;...Ch. 16 - Draw the structure of the neutral, positively...Ch. 16 - Draw the structure of the neutral, positively...Ch. 16 - For each tripeptide: [1] identify the N-terminal...Ch. 16 - For each tripeptide: [1] identify the N-terminal...Ch. 16 - For the given tripeptide: (a) identify the amino...Ch. 16 - For the given tripeptide: (a) identify the amino...Ch. 16 - Locate the peptide bond in the dipeptide shown in...Ch. 16 - Label the N-terminal and C-terminal amino acids in...Ch. 16 - Draw the structures of the amino acids formed when...Ch. 16 - Draw the structures of the amino acids formed when...Ch. 16 - What amino acids are formed by hydrolysis of the...Ch. 16 - Give the three-letter abbreviations for the amino...Ch. 16 - What is the difference between the primary and...Ch. 16 - What is the difference between the tertiary and...Ch. 16 - What type of intermolecular forces exist between...Ch. 16 - Which of the following pairs of amino acids can...Ch. 16 - List two amino acids that would probably be...Ch. 16 - List two amino acids that would probably be...Ch. 16 - Compare -keratin and hemoglobin with regards to...Ch. 16 - Compare collagen and myoglobin with regards to...Ch. 16 - When a protein is denatured, how is its primary,...Ch. 16 - Hydrogen bonding stabilizes both the secondary and...Ch. 16 - Describe the function or biological activity of...Ch. 16 - Describe the function or biological activity of...Ch. 16 - Use the given representations for an enzyme,...Ch. 16 - Use the given representations for an enzyme and...Ch. 16 - How are enzyme inhibitors used to treat high blood...Ch. 16 - How are enzyme inhibitors used to treat HIV? Give...Ch. 16 - What structural feature in -keratin makes...Ch. 16 - Why does the -keratin in hair contain many...Ch. 16 - Why must vegetarian diets be carefully balanced?Ch. 16 - Why does cooking meat make it easier to digest?Ch. 16 - Sometimes an incision is cauterized (burned) to...Ch. 16 - Prob. 16.82APCh. 16 - How is sickle cell disease related to hemoglobin...Ch. 16 - The silk produced by a silkworm is a protein with...Ch. 16 - Explain the difference in the mechanism of action...Ch. 16 - How are blood enzyme levels used to diagnose...Ch. 16 - Explain why two amino acids aspartic acid and...Ch. 16 - Prob. 16.88CP
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- 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?arrow_forward22-16 Which amino acids in Table 22-1 have more than one stereocenter?arrow_forward22-42 (a) How many atoms of the peptide bond lie in the same plane? (b) Which atoms are they?arrow_forward
- 22-91 Which amino acid does not rotate the plane of polarized light?arrow_forward22-30 (a) Use the three-letter abbreviations to write a representation of the following tripeptide: (b) Which amino acid is at the C-terminal end, and which is at the N-terminal end?arrow_forwardEstimate the pI of each tripeptide in Problem 27.46. Draw a structural formula of these tripeptides. Mark each peptide bond, the N-terminal amino acid, and the C-terminal amino acid. (a) Phe-Val-Asn (b) Leu-Val-Glnarrow_forward
- 22-28 A tetrapeptide is abbreviated as DPKH. Which amino acid is at the N-terminus, and which is at the C-terminus?arrow_forwardIdentify the R group of the side chain in the following amino acids that results in the side-chain classification indicated in parentheses see Table 19.1: a. tyrosine neutral, polar b. glutamate acidic, polar c. methionine neutral, nonpolar d. histidine basic, polar e. cysteine neutral, polar f. valine neutral, nonpolararrow_forwardName each peptide using both the three-letter and one-letter abbreviations of the component amino acids.arrow_forward
- For each tripeptide: [1] identify the amino acids that form the peptide; [2] label the N- and C-terminal amino acids; [3] name the tripeptide using three-letter symbols.arrow_forward+ H₂N- Protein CPMV Narrow_forwardWhich peptide in each pair has side chains that exhibit predominantly van der Waals forces?a. Met–Gly–Leu–Phe–Gln–Ala or Lys–Gly–Arg–Tyr–Trp–Glub. Tyr–Asp–Leu–Lys–His or Phe–Asn–Leu–Leu–Metarrow_forward
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