Organic Chemistry
5th Edition
ISBN: 9780078021558
Author: Janice Gorzynski Smith Dr.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 29, Problem 29.61P
Draw all the steps in the synthesis of each peptide from individual amino acids: (a) Gly–Ala; (b) Ile–Ala–Phe.
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Draw both enantiomers of each amino acid and label them as R or S: (a) phenylalanine; (b) methionine.
Draw the amino acids and peptide fragments formed when the decapeptide A–P–F–L–K–W–S–G–R–G is treated with each reagent or enzyme: (a) chymotrypsin; 8 pt helvetica roman (b) trypsin; (c) carboxypeptidase; (d) C6H5N = C = S.
Draw the structure of leu-enkephalin, a pentapeptide that acts as an analgesic and opiate, and has the following sequence: Tyr–Gly–Gly–Phe–Leu. (The structure of a related peptide, met-enkephalin, appeared in Section 22.6B.)
Chapter 29 Solutions
Organic Chemistry
Ch. 29 - Prob. 29.1PCh. 29 - Problem 29.2
What form exists at the isoelectric...Ch. 29 - Problem 29.3
Explain why the of the group of an...Ch. 29 - Prob. 29.4PCh. 29 - Problem 29.5
What -halo carbonyl compound is...Ch. 29 - Problem 29.6
The enolate derived from diethyl...Ch. 29 - Problem 29.7
What amino acid is formed when is...Ch. 29 - Problem 29.8
What aldehyde is needed to synthesize...Ch. 29 - Problem 29.9
Draw the products of each...Ch. 29 - Prob. 29.10P
Ch. 29 - Prob. 29.11PCh. 29 - Prob. 29.12PCh. 29 - Problem 29.13
What alkene is needed to synthesize...Ch. 29 - Problem 29.14
Draw the structure of each peptide....Ch. 29 - Problem 29.15
Name each peptide using both the...Ch. 29 - Prob. 29.16PCh. 29 - Prob. 29.17PCh. 29 - Problem 29.18
Glutathione, a powerful antioxidant...Ch. 29 - Problem 29.19
Draw the structure of the...Ch. 29 - Problem 29.20
Give the amino acid sequence of an...Ch. 29 - a What products are formed when each peptide is...Ch. 29 - Prob. 29.22PCh. 29 - Devise a synthesis of each peptide from amino acid...Ch. 29 - Devise a synthesis of the following dipeptide from...Ch. 29 - Prob. 29.25PCh. 29 - Consider two molecules of a tetrapeptide composed...Ch. 29 - What types of stabilizing interactions exist...Ch. 29 - Prob. 29.28PCh. 29 - Draw the product formed when the following amino...Ch. 29 - With reference to the following peptide: a...Ch. 29 - Devise a synthesis of the following dipeptide from...Ch. 29 - Prob. 29.32PCh. 29 - Histidine is classified as a basic amino acid...Ch. 29 - Tryptophan is not classified as a basic amino acid...Ch. 29 - What is the structure of each amino acid at its...Ch. 29 - What is the predominant form of each of the...Ch. 29 - 29.37 What is the predominant form of each of the...Ch. 29 - a. Draw the structure of the tripeptide A–A–A, and...Ch. 29 - 29.39 Draw the organic products formed in each...Ch. 29 - 29.40 What alkyl halide is needed to synthesize...Ch. 29 - 29.41 Devise a synthesis of threonine from diethyl...Ch. 29 - 29.42 Devise a synthesis of each amino acid from...Ch. 29 - Prob. 29.43PCh. 29 - Prob. 29.44PCh. 29 - Prob. 29.45PCh. 29 - Prob. 29.46PCh. 29 - Prob. 29.47PCh. 29 - 29.48 Brucine is a poisonous alkaloid obtained...Ch. 29 - Prob. 29.49PCh. 29 - Prob. 29.50PCh. 29 - Draw the structure for each peptide: (a) Phe–Ala;...Ch. 29 - 29.52 For the tetrapeptide Asp–Arg–Val–Tyr:
a....Ch. 29 - Prob. 29.53PCh. 29 - Prob. 29.54PCh. 29 - 29.55 Draw the amino acids and peptide fragments...Ch. 29 - Prob. 29.56PCh. 29 - Prob. 29.57PCh. 29 - Prob. 29.58PCh. 29 - 29.59 An octapeptide contains the following amino...Ch. 29 - 29.60 Draw the organic products formed in each...Ch. 29 - Draw all the steps in the synthesis of each...Ch. 29 - 29.62 Write out the steps for the synthesis of...Ch. 29 - 29.63 Besides the Boc and Fmoc protecting groups...Ch. 29 - 29.64 Another method to form a peptide bond...Ch. 29 - 29.65 Draw the mechanism for the reaction that...Ch. 29 - 29.66 Which of the following amino acids are...Ch. 29 - 29.67 After the peptide chain of collagen has been...Ch. 29 - Prob. 29.68PCh. 29 - Prob. 29.69PCh. 29 - 29.70 The anti-obesity drug orlistat works by...Ch. 29 - Prob. 29.71P
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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
- Indicate whether each statement is true or false. (a) Tryptophan is an aromatic amino acid. (b) Lysine is positively charged at pH 7. (c) Asparagine has two amide bonds. (d) Isoleucine and leucine are enantiomers. (e) Valine is probably more water-soluble than arginine.arrow_forwardDraw the product formed when the following amino acid is treated with each reagent: (a) CH3OH, H+; (b) CH3COCl, pyridine; (c) HCl (1 equiv); (d) NaOH (1 equiv); (e) C6H5N=C=S.arrow_forward1.Draw the structures of ornithine and lysine. Explain how they are different . (B) Draw the structure of the compound formed when ornithine reacts with carbamoyl phosphate. (C) Write the transamination reaction of alanine with alpha - ketoglutarate. Name the products that are formed .arrow_forward
- 22-48 How many amino acid residues in the A chain of insulin are the same in insulin from humans, cattle (bovine), hogs, and sheep?arrow_forwardWhat special role does the amino acid cysteine have in the peptides vasopressin and oxytocin?arrow_forwardFor 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_forward
- 22-42 (a) How many atoms of the peptide bond lie in the same plane? (b) Which atoms are they?arrow_forwardFor the tripeptide SerValMet 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_forwardDraw the product formed when the following amino acid is treated with each reagent: (a) CH3OH, H+; (b) CH3COCCl, pyridine; (c) HCl (1 equiv); (d) NaOH (1 equiv); (e) C6H5N = C = S.arrow_forward
- Consider the following peptide : Phe – Glu – Ser – Met and Val – Trp – Cys – Leu. Do these peptides have different net charges at (a) pH 1? (b) pH 7? Indicate the charges at both pH valuesarrow_forwardCrocin, which occurs naturally in crocus and gardenia owers, is primarily responsible for the color of saffron. (a) What lipid and monosaccharides are formed by the hydrolysis of crocin? (b) Classify the lipid as a monoterpenoid, diperpenoid, etc., and locate the isoprene units.arrow_forwardClassify this amino acid. Select one: none of the choices shown basic nonpolar polar acidicarrow_forward
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