Chapter 23, Problem 23.75SP

(a)

Interpretation Introduction

Interpretation:

The amino acid which contains an isopropyl group should be drawn and its name has to be written.

Concept introduction:

Amino acids are the molecules containing an amine group, a carboxylic group, and a side-chain that is specific to each amino acid. They are the basic structural building units of protein and other biomolecules.

Carbon, hydrogen, oxygen and nitrogen are the key elements in amino acid.

General structure of an amino acid can be drawn as follows,

The amino acids are distinguished from one another by their R group also known as a side chain.

Some amino acids are listed below,

$\begin{array}{cc}\text{Name}\text{of}\text{amino}\text{acid}& \text{Side}\text{chain}\text{(R)}\\ \text{Glycine}& \text{Hydrogen}\text{atom}\\ \text{Valine}& \text{Isopropyl}\text{group}\\ \text{Leucine}& \text{Isobutyl}\text{group}\\ \text{Cysteine}& \text{Thiol}\left({\text{-CH}}_{\text{2}}\text{SH}\right)\\ \text{Serine}& {\text{Alcohol(-CH}}_{\text{2}}\text{OH)}\\ \text{Phenylalanine}& \text{Aromatic}\text{ring}\left({\text{C}}_{\text{6}}{\text{H}}_{\text{5}}{\text{CH}}_{\text{2}}\right)\end{array}$

(b)

Interpretation Introduction

Interpretation:

The amino acid which contains an alcohol group should be drawn and its name has to be written.

Concept introduction:

Amino acids are the molecules containing an amine group, a carboxylic group, and a side-chain that is specific to each amino acid. They are the basic structural building units of protein and other biomolecules.

Carbon, hydrogen, oxygen and nitrogen are the key elements in amino acid.

General structure of an amino acid can be drawn as follows,

The amino acids are distinguished from one another by their R group also known as a side chain.

Some amino acids are listed below,

$\begin{array}{cc}\text{Name}\text{of}\text{amino}\text{acid}& \text{Side}\text{chain}\text{(R)}\\ \text{Glycine}& \text{Hydrogen}\text{atom}\\ \text{Valine}& \text{Isopropyl}\text{group}\\ \text{Leucine}& \text{Isobutyl}\text{group}\\ \text{Cysteine}& \text{Thiol}\left({\text{-CH}}_{\text{2}}\text{SH}\right)\\ \text{Serine}& {\text{Alcohol(-CH}}_{\text{2}}\text{OH)}\\ \text{Phenylalanine}& \text{Aromatic}\text{ring}\left({\text{C}}_{\text{6}}{\text{H}}_{\text{5}}{\text{CH}}_{\text{2}}\right)\end{array}$

(c)

Interpretation Introduction

Interpretation:

The amino acid which contains a thiol group should be drawn and its name has to be written.

Concept introduction:

Amino acids are the molecules containing an amine group, a carboxylic group, and a side-chain that is specific to each amino acid. They are the basic structural building units of protein and other biomolecules.

Carbon, hydrogen, oxygen and nitrogen are the key elements in amino acid.

General structure of an amino acid can be drawn as follows,

The amino acids are distinguished from one another by their R group also known as a side chain.

Some amino acids are listed below,

$\begin{array}{cc}\text{Name}\text{of}\text{amino}\text{acid}& \text{Side}\text{chain}\text{(R)}\\ \text{Glycine}& \text{Hydrogen}\text{atom}\\ \text{Valine}& \text{Isopropyl}\text{group}\\ \text{Leucine}& \text{Isobutyl}\text{group}\\ \text{Cysteine}& \text{Thiol}\left({\text{-CH}}_{\text{2}}\text{SH}\right)\\ \text{Serine}& {\text{Alcohol(-CH}}_{\text{2}}\text{OH)}\\ \text{Phenylalanine}& \text{Aromatic}\text{ring}\left({\text{C}}_{\text{6}}{\text{H}}_{\text{5}}{\text{CH}}_{\text{2}}\right)\end{array}$

(d)

Interpretation Introduction

Interpretation:

The amino acid which contains an aromatic ring group should be drawn and its name has to be written.

Concept introduction:

Amino acids are the molecules containing an amine group, a carboxylic group, and a side-chain that is specific to each amino acid. They are the basic structural building units of protein and other biomolecules.

Carbon, hydrogen, oxygen and nitrogen are the key elements in amino acid.

General structure of an amino acid can be drawn as follows,

The amino acids are distinguished from one another by their R group also known as a side chain.

Some amino acids are listed below,

$\begin{array}{cc}\text{Name}\text{of}\text{amino}\text{acid}& \text{Side}\text{chain}\text{(R)}\\ \text{Glycine}& \text{Hydrogen}\text{atom}\\ \text{Valine}& \text{Isopropyl}\text{group}\\ \text{Leucine}& \text{Isobutyl}\text{group}\\ \text{Cysteine}& \text{Thiol}\left({\text{-CH}}_{\text{2}}\text{SH}\right)\\ \text{Serine}& {\text{Alcohol(-CH}}_{\text{2}}\text{OH)}\\ \text{Phenylalanine}& \text{Aromatic}\text{ring}\left({\text{C}}_{\text{6}}{\text{H}}_{\text{5}}{\text{CH}}_{\text{2}}\right)\end{array}$