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Chapter 21: Q64P (page 1027)

Draw the product obtained when a lysine side chain in a polypeptide reacts with maleic anhydride.

Short Answer

Expert verified

There are 20 naturally occurring amino acids. Some different classifications of amino acids include acidic and basic amino acids. Lysine and arginine are basic amino acids that comprise two basic nitrogen-containing groups.

Step by step solution

01

Amino acids

There are 20 naturally occurring amino acids. Some different classifications of amino acids include acidic and basic amino acids. Lysine and arginine are basic amino acids that comprise two basic nitrogen-containing groups.

02

The product obtained when a lysine side chain in a polypeptide reacts with maleic anhydride

Lysine is a basic amino acid comprising a nitrogen group. Hence, it can react with an electrophilic position by providing the lone pair on the basic nitrogen.

The mechanism of lysine with maleic anhydride is given below.

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Most popular questions from this chapter

Do any other amino acids in Table 21.2 have more than one asymmetric center?

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

a. Why is the pKaof the glutamate side chain greater than the pKaof the aspartate side chain?

b. Why is the pKa of the arginine side chain greater than the pKa of the lysine side chain?

a. How many different octapeptides can be made from the 20 naturally occurring amino acids?

b. How many different proteins containing 100 amino acids can be made from the 20 naturally occurring amino acids?

Which bonds in the backbone of a peptide can rotate freely?
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