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Chapter 21: Q37P (page 1014)

Write the mechanism for the reaction of a cysteine side chain with iodoacetic acid.

Short Answer

Expert verified

The answer is:

Mechanism

Step by step solution

01

Step-by-Step Solution Step 1: Cysteine

There are a large number of amino acids in nature. Out of these, some are essential, and some are non-essential amino acids. Cysteine is an amino acid containing a sulfur atom and is semi essential amino acid.

02

Explanation

The mechanism for the reaction of the cysteine side chain with iodoacetic acid is given below.

Mechanism

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Most popular questions from this chapter

a.Which amino acid has the lowest pI value?

b.Which amino acid has the highest pI value?

c.Which amino acid has the greatest amount of negative charge at pH = 6.20?

d.Which amino acid has a greater negative charge at pH = 6.20, glycine or methionine?

Cells can also convert a-keto acids into amino acids, but because the reagents organic chemists use for this reaction are not available in cells, they carry out this reaction by a different mechanism

(a) What amino acid is obtained from the reductive amination of each of the following metabolic intermediates in a cell by reductive amination?

(b) What amino acids are obtained from the same metabolic intermediates when the amino acids are synthesized in the laboratory?

Draw the form of aspartate that predominates at the following pH values:

a. pH = 1.0 b. pH = 2.6 c. pH = 6.0 d. pH = 11.0

Which is the more effective buffer at physiological pH, a solution of 0.1 M glycylglycine or a solution of 0.2 M glycine?

Draw the tetrapeptide Ala-Thr-Asp-Asn and indicate the peptide bonds.
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