Essential Organic Chemistry (3rd Edition)
3rd Edition
ISBN: 9780321937711
Author: Paula Yurkanis Bruice
Publisher: PEARSON
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Textbook Question
Chapter 17.4, Problem 7P
Calculate the pI of each of the following amino acids:
- a. asparagine
- b. Arginine
- c. Serine
- d. aspartate
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1. Identify which of the following pairs of amino acid residues can have hydrogen bonding between
their side chains.
a. Alanine and Glycine
b. Leucine and Isoleucine
C. Valine and Asparagine
d. Threonine and Tyrosine
2. Draw a picture showing the details of the hydrogen bonding among the pairs in exercise 1.
Chapter 17 Solutions
Essential Organic Chemistry (3rd Edition)
Ch. 17.1 - a. Explain why, when the imidazole ring of...Ch. 17.2 - Prob. 2PCh. 17.3 - Prob. 3PCh. 17.3 - Prob. 4PCh. 17.3 - Prob. 6PCh. 17.4 - Calculate the pI of each of the following amino...Ch. 17.4 - a. Which amino acid has the lowest pI value? b....Ch. 17.5 - What aldehyde is formed when valine is treated...Ch. 17.5 - Prob. 10PCh. 17.5 - Prob. 11P
Ch. 17.5 - Prob. 12PCh. 17.6 - Prob. 13PCh. 17.6 - What amino acid would be formed using the...Ch. 17.6 - What amino acid would be formed when the aldehyde...Ch. 17.7 - Pig liver esterase is an enzyme that catalyzes the...Ch. 17.8 - Prob. 17PCh. 17.8 - Prob. 18PCh. 17.8 - Prob. 19PCh. 17.8 - Prob. 20PCh. 17.10 - Prob. 21PCh. 17.10 - Prob. 22PCh. 17.10 - Why does cyanogen bromide not cleave on the C-side...Ch. 17.10 - Prob. 24PCh. 17.10 - Prob. 26PCh. 17.12 - Prob. 27PCh. 17.13 - a. Which would have the greatest percentage of...Ch. 17 - Draw the predominant form of the following amino...Ch. 17 - What is the pI of serine?Ch. 17 - Prob. 31PCh. 17 - Prob. 32PCh. 17 - Which would have a higher percentage of negative...Ch. 17 - Draw the form of aspartate that predominates at...Ch. 17 - Prob. 35PCh. 17 - A professor was preparing a manuscript for...Ch. 17 - a. Why is the pKa of the glutamate side chain...Ch. 17 - Prob. 38PCh. 17 - Determine the amino acid sequence of a polypeptide...Ch. 17 - Prob. 40PCh. 17 - Prob. 41PCh. 17 - Three peptides were obtained from a trypsin...Ch. 17 - Prob. 43PCh. 17 - After the polypeptide shown here was treated with...Ch. 17 - The disulfide bridges of a polypeptide were...Ch. 17 - -Amino acids can be prepared by treating an...Ch. 17 - Reaction of a polypeptide with carboxypeptidase A...Ch. 17 - Prob. 48PCh. 17 - Prob. 49PCh. 17 - Show how valine can be prepared by a. a Strecker...Ch. 17 - Prob. 51PCh. 17 - Why is proline never found in an -helix?Ch. 17 - Determine the amino acid sequence of a polypeptide...Ch. 17 - Prob. 55PCh. 17 - A chemist wanted to test his hypothesis that the...Ch. 17 - A normal polypeptide and a mutant of the...
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- Calculate the pI of each of the following amino acids: a. asparagine b. arginine c. serine d. aspartatearrow_forwardof a protein. 15. The amino acid sequence is the a. primary structure b. secondary structure c. tertiary structure d. quaternary structure e. both secondary and tertiaryarrow_forward34. Which of the following is not a property of amino acids a. Buffer 35. The protein primary structure is held together by a. Hydrogen bonds b. Isoelectric point C. Zwitterions d. Insoluble in water b. Disulfide bonds c. Peptide bonds d. Protein bondsarrow_forward
- 1. The pyrimidine heterocyclic system is present in the structure of drugs: A. Theophylline B. Folic acid C. Phenazepam D. Aminazinarrow_forwardDraw each amino acid in its dipolar ion form. a. Val b. Phe c. Tyr d. Cysarrow_forwardWhich of the following is not used to classify amino acid side chains? a. non-polar b. neutral c. acidic d. basic e. polararrow_forward
- a. Tyrosine b. Alanine c. Leucine d. Asparagine 5. Draw a picture showing the details of the hydrogen bonding between the side chain and the protein backbone for any amino acid residues from exercise 4 that are capable.arrow_forwardi 3. Identify which of the following pairs of amino acid residues can have London dispersion forces between their side chains. a. Alanine and Glycine b. Leucine and Isoleucine Valine and Asparagine C. d. Threonine and Tyrosinearrow_forwarda. Lipid hydrolyis b. Acrolein Test c. Test for unsaturation d. Test for phosphates e. Liebermann-Burchard testarrow_forward
- what explains the pH dependence of prior protein folding? a. Hydrogen ions interfere with disulfide bond formation. b. Hydrogen ions interfere with hydrogen bonding to form secondary c. Hydrogen ions interfere with hydrophobic interactions in the proteins d. Hydrogen ions interfere with the primary amino acid sequence what is the osmolarity when 1.5 mole MgC12 is added to 1 liter of water? a. 1.2 Osmol 3 Osmol c. 4.5 Osmol d. 6 Osmol What is the pH of 1.75M benzoic acid given Ka-6.4-10^-5 a. 1.35 b. 1.98. c. 4.20 d. 4.96 What type of bonds are sodium and fluorine likely to form given electronegativity values of .93 and 3.98 for sodium and fluorine, respectively? a. Covalent b. Hydrogen c. Ionic d. Metallic How many electrons are present within the valence shell of an atom that satisfies the octet rule? a. b. 2 C. d. 8 What concentration of acid is used to create a 10mM pH 7.6 sodium phosphate buffer with a pKa of 7.2? a. .003M b. .007M C. 1.2M d. 2.85M What is the sum of pH and pOH…arrow_forward9) A COOH H₂N-C-H CH₂ CH₂ CH₂ CH₂ NH₂ 2.18 Coo H₂N-C-H CH₂ CH₂ CH₂ 8.95 Coo HN-C-H CH₂ CH₂ CH₂ 1 CH₂ NH₂ 16.53 What is this amino acid and the pl? a) This is arginine and the pl is 8.50 b) This is glutamine and the pl is 5.57 c) This is arginine and the pl is 9.62 Coo H₂N-C-H CH₂ 1 CH₂ CH₂ CH₂ NH₂arrow_forward4. How is the following amino acid classified? H3Ñ-CHC-o CH2 a. nonpolar b. polar neutral c. polar acidic d. polar basicarrow_forward
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Biomolecules - Protein - Amino acids; Author: Tutorials Point (India) Ltd.;https://www.youtube.com/watch?v=ySNVPDHJ0ek;License: Standard YouTube License, CC-BY