ORGANIC CHEMISTRY,VOL.1 >CUSTOM<
10th Edition
ISBN: 9781260020724
Author: Carey
Publisher: MCG CUSTOM
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Question
Chapter 26, Problem 37P
Interpretation Introduction
Interpretation:
The five amino acids which are contained in given synthetic peptide are to be identified.
Concept Introduction:
A peptide bond is an amide bond. A dipeptide contains two amino acids linked by a peptide bond.
It is formed between the amino group of one amino acid and the carboxyl group of the other amino acid.
The peptide structures are written, such that the amino group is at the left side and the carboxyl group is at the right side.
The left end of the peptide is called the N terminus and the right end is called the C terminus.
Each amino acid contains an amino group and a carboxylic acid group attached to the same carbon atom.
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As a genetic engineer, you have been given the following task:alter a protein’s structure by converting a specific amino acidsequence that forms an extended a-helix to one that formsa b-barrel. What types of amino acid are probably in thea-helix, and which ones would you need to substitute?
Draw the structure of the tetrapeptide Asp-Arg-Val-Tyr. Please show the appropriate stereochemistry of the natural amino acids in the resulting peptide. Please draw all ionizable groups in their neutral form.
The amino acid (S)-alanine has the physical characteristics listed under the structure.
How does the melting point of a racemic mixture of (R)- and (S)-alanine compare to the melting point of (S)-alanine?
Chapter 26 Solutions
ORGANIC CHEMISTRY,VOL.1 >CUSTOM<
Ch. 26.1 - Prob. 1PCh. 26.2 - Prob. 2PCh. 26.2 - Prob. 3PCh. 26.3 - Prob. 4PCh. 26.3 - Prob. 5PCh. 26.4 - Prob. 6PCh. 26.4 - Prob. 7PCh. 26.4 - Prob. 8PCh. 26.5 - Prob. 9PCh. 26.6 - Prob. 10P
Ch. 26.6 - Prob. 11PCh. 26.6 - Prob. 12PCh. 26.7 - Prob. 13PCh. 26.7 - Prob. 14PCh. 26.7 - Prob. 15PCh. 26.7 - Prob. 16PCh. 26.7 - Prob. 17PCh. 26.9 - Prob. 18PCh. 26.10 - Digestion of the tetrapeptide of Problem 26.18...Ch. 26.12 - Prob. 20PCh. 26.12 - Prob. 21PCh. 26.15 - Prob. 22PCh. 26.15 - Prob. 23PCh. 26.16 - Prob. 24PCh. 26.17 - Prob. 25PCh. 26.18 - Prob. 26PCh. 26 - Prob. 27PCh. 26 - Prob. 28PCh. 26 - Prob. 29PCh. 26 - Prob. 30PCh. 26 - Prob. 31PCh. 26 - Prob. 32PCh. 26 - Prob. 33PCh. 26 - Prob. 34PCh. 26 - Prob. 35PCh. 26 - Prob. 36PCh. 26 - Prob. 37PCh. 26 - Prob. 38PCh. 26 - Prob. 39PCh. 26 - Prob. 40PCh. 26 - If you synthesized the tripeptide Leu-Phe-Ser from...Ch. 26 - Prob. 42PCh. 26 - Prob. 43PCh. 26 - Prob. 44PCh. 26 - Prob. 45DSPCh. 26 - Prob. 46DSPCh. 26 - Prob. 47DSPCh. 26 - Prob. 48DSPCh. 26 - Prob. 49DSPCh. 26 - Prob. 50DSP
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- A tripeptide on hydrolysis produced glycine, alanine and leucine. The structures of these amino acids are shown below. On reaction with Edman’s reagent, leucine was released as the phenylhydantoin. Treatment of the tripeptide with carboxypeptidase gave glycine. Draw the structure of the tripeptide.arrow_forwardα-Amino acids can be prepared by treating an aldehyde with ammonia/trace acid, followed by hydrogen cyanide, followed by acid-catalyzed hydrolysis. What aldehyde is needed to prepare isoleucine?arrow_forwardWhat would be the overall yield of a peptide containing 15 amino acids if the yield for the incorporation of each is 80%?arrow_forward
- Give the complete name of the peptide below.arrow_forwardDeduce the amino acid sequence of an undecapeptide (11 amino acids) from the experimental results shown in the table.arrow_forwardHow many of the -amino acids shown in Table 26-1 contain aromatic rings? How many contain sulfur? How many contain alcohols? How many contain hydrocarbon side chains?arrow_forward
- Using both three- and one-letter codes for amino acids, write the structures of all possible peptides containing the following amino acids: (a) Val, Ser, Leu (b) Ser, Leu2, Proarrow_forwardGive the sequence of the following tetrapeptide:arrow_forwardWhich amino acids could be referred to as derivatives of butanoic acid?arrow_forward
- The following compound is an intermediate in the biosynthesis of one of the 20 common -amino acids. Which one is it likely to be, and what kind of chemical change must take place to complete the biosynthesis?arrow_forward22-42 (a) How many atoms of the peptide bond lie in the same plane? (b) Which atoms are they?arrow_forwardAnswer the following questions about the amino acid whose Fischer projection formula is a. Is it a D-amino acid or an L-amino acid? b. Is it a nonpolar or polar amino acid? c. Is it an essential or nonessential amino acid? d. Is it a standard or nonstandard amino acid?arrow_forward
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