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Chapter 21: Q36P (page 1012)

Show the steps in the synthesis of the tetrapeptide in problem 34, using Merrifield’s method.

Short Answer

Expert verified

The answer is,



Reaction

Step by step solution

01

Tetrapeptide

The peptides are the R-CONH-R’ bond and are formed between the amino acid compounds. The peptide chains containing three peptide bonds are called tetrapeptides. The peptide chains always contain peptide bonds a number less than the number of the amino acids used.

02

Explanation

The reaction for the synthesis of tetrapeptide is as given below.

REACTION

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Most popular questions from this chapter

Calculate the pI of each of the following amino acids:

a.asparagine b. arginine c. serine d. aspartate

Esterase is an enzyme that catalyzes the hydrolysis of esters. It hydrolyzes esters of L-amino acids more rapidly than esters of D-amino acids. How can this enzyme be used to separate a racemic mixture of amino acids?

Which would have the greatest percentage of polar amino acids, a spherical protein, a cigar-shaped protein, or a subunit of a hexamer? b. Which would have the smallest percentage of polar amino acids?

A professor was preparing a manuscript for publication in which she reported that the pI of the tripeptide Lys-Lys-Lys was 10.6. One of her studentspointed out that there must be an error in her calculations because the pKa of the e-amino group of lysine is 10.8 and the pI of the tripeptide has to begreater than any of its individual pKa values. Was the student correct?

What amino acid is formed when the aldehyde used in the Strecker synthesis is

a. acetaldehyde? b. 2-methylbutanal? c. 3-methylbutanal?
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