Chapter 21.2, Problem 21.2QC

(a)

Interpretation Introduction

Interpretation: Out of the given amino acids, the structure that matches the abbreviation “His” is to be figured out.

Concept Introduction :

Amino acids are the monomers of proteins that contain carbon, hydrogen, nitrogen, and oxygen atoms. Thus the basic structure of any amino acid is composed of a carboxyl group ( $\text{COOH}$ ), a hydrogen atom ( $\text{H}$ ), an amino group ( ${\text{NH}}_{\text{3}}{}^{\text{+}}$ ), and a side chain which varies. All these basic components are attached to the $\text{α-carbon}$ .

(b)

Interpretation Introduction

Interpretation: Out of the given amino acids, the structure that matches the abbreviation “I” is to be figured out.

Concept Introduction :

Amino acids are the monomers of proteins that contain carbon, hydrogen, nitrogen, and oxygen atoms. Thus the basic structure of any amino acid is composed of a carboxyl group ( $\text{COOH}$ ), a hydrogen atom ( $\text{H}$ ), an amino group ( ${\text{NH}}_{\text{3}}{}^{\text{+}}$ ), and a side chain which varies. All these basic components are attached to the $\text{α-carbon}$ .

(c)

Interpretation Introduction

Interpretation:Out of the given amino acids the structure that matches the abbreviation “Q” is to be figured out.

Concept Introduction :

Amino acids are the monomers of proteins that contain carbon, hydrogen, nitrogen, and oxygen atoms. Thus, the basic structure of any amino acid is composed of a carboxyl group ( $\text{COOH}$ ), a hydrogen atom ( $\text{H}$ ), an amino group ( ${\text{NH}}_{\text{3}}{}^{\text{+}}$ ), and a side chain which varies. All these basic components are attached to the $\text{α-carbon}$ .

(d)

Interpretation Introduction

Interpretation: Out of the given amino acids, the structure that matches the abbreviation “Tyr” is to be figured out.

Concept Introduction:

Amino acids are the monomers of proteins that contain carbon, hydrogen, nitrogen, and oxygen atoms. Thus, the basic structure of any amino acid is composed of a carboxyl group ( $\text{COOH}$ ), a hydrogen atom ( $\text{H}$ ), an amino group ( ${\text{NH}}_{\text{3}}{}^{\text{+}}$ ), and a side chain which varies. All these basic components are attached to the $\text{α-carbon}$ .

(e)

Interpretation Introduction

Interpretation: Out of the given amino acids, the structure that matches the abbreviation “P” is to be figured out.

Concept Introduction:

Amino acids are the monomers of proteins that contain carbon, hydrogen, nitrogen, and oxygen atoms. Thus, the basic structure of any amino acid is composed of a carboxyl group ( $\text{COOH}$ ), a hydrogen atom ( $\text{H}$ ), an amino group ( ${\text{NH}}_{\text{3}}{}^{\text{+}}$ ), and a side chain which varies. All these basic components are attached to the $\text{α-carbon}$ .

(f)

Interpretation Introduction

Interpretation: Out of the given amino acids, the structure that matches the abbreviation “E” is to be figured out.

Concept Introduction: Amino acids are the monomers of proteins that contain carbon, hydrogen, nitrogen, and oxygen atoms. Thus, the basic structure of any amino acid is composed of a carboxyl group ( $\text{COOH}$ ), a hydrogen atom ( $\text{H}$ ), an amino group ( ${\text{NH}}_{\text{3}}{}^{\text{+}}$ ), and a side chain which varies. All these basic components are attached to the $\text{α-carbon}$ .

(g)

Interpretation Introduction

Interpretation: Out of the given amino acids, the structure that matches the abbreviation “Asp” is to be figured out.

Concept Introduction: Amino acids are the monomers of proteins that contain carbon, hydrogen, nitrogen, and oxygen atoms. Thus, the basic structure of any amino acid is composed of a carboxyl group ( $\text{COOH}$ ), a hydrogen atom ( $\text{H}$ ), an amino group ( ${\text{NH}}_{\text{3}}{}^{\text{+}}$ ), and a side chain which varies. All these basic components are attached to the $\text{α-carbon}$ .

(h)

Interpretation Introduction

Interpretation: Out of the given amino acids, the structure that matches the abbreviation “R” is to be figured out.

Concept Introduction: Amino acids are the monomers of proteins that contain carbon, hydrogen, nitrogen, and oxygen atoms. Thus, the basic structure of any amino acid is composed of a carboxyl group ( $\text{COOH}$ ), a hydrogen atom ( $\text{H}$ ), an amino group ( ${\text{NH}}_{\text{3}}{}^{\text{+}}$ ), and a side chain which varies. All these basic components are attached to the $\text{α-carbon}$ .