EBK ORGANIC CHEMISTRY
8th Edition
ISBN: 8220102744127
Author: Bruice
Publisher: PEARSON
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Textbook Question
Chapter 21.4, Problem 10P
Calculate the pI of each of the following amino acids:
a. asparagine
b. arginine
c. serine
d. aspartate
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Chapter 21 Solutions
EBK ORGANIC CHEMISTRY
Ch. 21.1 - a. Explain why, when the imidazole ring of...Ch. 21.2 - a. Which isomer(R)-alanine or (S)-alanineis...Ch. 21.2 - Prob. 4PCh. 21.3 - Prob. 5PCh. 21.3 - Prob. 6PCh. 21.3 - Draw the predominant form for glutamate in a...Ch. 21.3 - a. Why is the pKa of the glutamate side chain...Ch. 21.4 - Calculate the pI of each of the following amino...Ch. 21.4 - a. Which amino acid has the lowest pI value? b....Ch. 21.4 - Prob. 12P
Ch. 21.4 - Prob. 13PCh. 21.4 - Explain why the pI of lysine is the average of the...Ch. 21.5 - What aldehyde is formed when valine is treated...Ch. 21.5 - Prob. 16PCh. 21.5 - Prob. 17PCh. 21.5 - Prob. 18PCh. 21.5 - Prob. 19PCh. 21.6 - Why is excess ammonia used in the preceding...Ch. 21.6 - Prob. 21PCh. 21.6 - What amino acid is formed using the...Ch. 21.6 - Prob. 23PCh. 21.6 - What amino acid is formed when the aldehyde used...Ch. 21.7 - Esterase is an enzyme that catalyzes the...Ch. 21.8 - Draw the tetrapeptide Ala-Thr-Asp-Asn and indicate...Ch. 21.8 - Draw the resonance contributors of the peptide...Ch. 21.8 - Which bonds in the backbone of a peptide can...Ch. 21.9 - An opioid pentapeptide has the following...Ch. 21.9 - What is the configuration about each of the...Ch. 21.9 - Glutathione is a tripeptide whose function is to...Ch. 21.10 - What dipeptides would be formed by heating a...Ch. 21.10 - Suppose you are trying to synthesize the dipeptide...Ch. 21.10 - Show the steps in the synthesis of the...Ch. 21.10 - a. Calculate the overall yield of bradykinin when...Ch. 21.11 - Show the steps in the synthesis of the...Ch. 21.13 - Prob. 37PCh. 21.13 - In determining the primary structure of insulin,...Ch. 21.13 - A decapeptide undergoes partial hydrolysis to give...Ch. 21.13 - Explain why cyanogen bromide does not cleave on...Ch. 21.13 - Indicate the peptides produced from cleavage by...Ch. 21.14 - Prob. 43PCh. 21.14 - Three peptides were obtained from a trypsin...Ch. 21.14 - Prob. 45PCh. 21.15 - How would a protein that resides in the nonpolar...Ch. 21.16 - a. Which would have the greatest percentage of...Ch. 21.17 - When apples that have been cut are exposed to...Ch. 21 - Glycine has pK2 values of 2.34 and 9.60. At what...Ch. 21 - Prob. 50PCh. 21 - A titration curve is a plot of the pH of a...Ch. 21 - Prob. 52PCh. 21 - Aspartame (its structure is on page 1007) has a pl...Ch. 21 - Draw the form of aspartate that predominates at...Ch. 21 - Show how phenylalanine can be prepared by...Ch. 21 - A professor was preparing a manuscript for...Ch. 21 - What aldehydes are formed when the following amino...Ch. 21 - Prob. 58PCh. 21 - Determine the amino acid sequence of a polypeptide...Ch. 21 - Prob. 60PCh. 21 - Prob. 61PCh. 21 - Which is the more effective buffer at...Ch. 21 - Identify the location and type of charge on the...Ch. 21 - Draw the product obtained when a lysine side chain...Ch. 21 - After the polypeptide shown below was treated with...Ch. 21 - Treatment of a polypeptide with 2-mercaptoethanol...Ch. 21 - Show how aspartame can be synthesized using DCCD.Ch. 21 - -Amino acids can be prepared by treating an...Ch. 21 - Reaction of a polypeptide with carboxypeptidase A...Ch. 21 - a. How many different octapeptides can be made...Ch. 21 - Glycine has pKa values of 2.3 and 9.6. Do you...Ch. 21 - A mixture of 15 amino acids gave the fingerprint...Ch. 21 - Write the mechanism for the reaction of an amino...Ch. 21 - Prob. 74PCh. 21 - Show how valine can be prepared by a. a...Ch. 21 - The primary structure of -endorphin, a peptide...Ch. 21 - A chemist wanted to test his hypothesis that the...Ch. 21 - Propose a mechanism for the rearrangement of the...Ch. 21 - A normal polypeptide and a mutant of the...Ch. 21 - Determine the amino acid sequence of a polypeptide...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Similar questions
- Nonearrow_forwardAnswer number 16.8arrow_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_forward
- i 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_forwardIn the tetrapeptide Phe-Gln-Trp-His, the C-terminal amino acid is A. Phe B. Trp C. His D. Glnarrow_forwardWhich of the following amino acids has a net negative charge at pH 7.0? A. glycine B. threonine C. aspartate D. argininearrow_forward
- Write structural formulas to show the form the following amino acids would have in a solution with a pH lower than the amino acid isoelectric point: a. methionine b. serinearrow_forwardEnzymes called amino acyl-tRNA synthetases: A. attaches amino acids to tRNA B. synthesizes tRNA C. destroys tRNA molecules D. synthesizes amino acidsarrow_forward9. An amino acid most likely found in the membrane-bound area of a membrane protein is... A. Leucine B. Aspartic acid C. Glutamic acid D. Asparaginearrow_forward
- The following table lists several common vegetarian foods and the amino acids that they are missing. Which of the following combinations supply a complete protein when consumed together? Food Missing amino acid(s) beans methionine and tryptophan corn lysine and tryptophan peas methionine rice lysine walnuts lysine and tryptophan wheat lysine a. wheat and corn b. corn and beans c. beans and peas d. peas and corn e. beans and walnuts I got my answer from here the first time and it said it was E( beans and walnuts), but it was incorrectarrow_forwardChoose the amino acid most likely to serve as a proton donor in the active site of an enzyme: a.Histidine b.Tyrosine c.Lysine d.Aspartic acid e.Argininearrow_forwardDefine the following terms: a. peptide bond b. Schiff base c. disulfide bridge d. aldimine e. amphotericarrow_forward
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