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Chapter 2: Q15.94 P (page 40)

Draw the R group of (a) alanine; (b) histidine; (c) methionine.

Short Answer

Expert verified

a. As a result, alanine's side chain is CH3.

b. As a result, histidine's side chain is,

c. As a result, methionine's side chain is,

Step by step solution

01

(a) R group of alanine

A carboxylic acid having a protonated amino group on the alpha carbon is known as an amino acid.

An amino acid's general structure is as follows:

Alanine

The only difference between amino acids is the substituent linked to the alpha carbon.

Alanine has the following structure:

Side chain of Alanine

As a result, alanine's side chain is CH3.

02

Step 2: (b) R group of histidine

Histidine is a very important amino acid. Histidine has the following structure:

Histidine

As a result, histidine's side chain is,

Side chain of Histidine

03

Step 3: (c) R group of methionine

An important amino acid is a methionine. Methionine has the following structure:

Methionine

As a result, methionine's side chain is,

Side chain of methionine

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