Chapter 2, Problem 6P

Interpretation Introduction

(a)

Interpretation:

The three amino acids present in the given protein segment needs to be identified.

Concept introduction:

Amino acids are compounds containing amino as well as acidic group. The general molecular structure of an amino acid is as follows:

${\text{NH}}_{\text{2}}\text{-CHR-COOH}$

Here, R is different group for different amino acids. If there is more than one amino group present in an amino acid, they are considered as basic amino acids and if there is more than one carboxylic group then they are considered as acidic amino acids.

Interpretation Introduction

(b)

Interpretation:

The N-terminal amino acid needs to be determined.

Concept introduction:

Amino acids are compounds containing amino as well as acidic group. The general molecular structure of an amino acid is as follows:

${\text{NH}}_{\text{2}}\text{-CHR-COOH}$

Here, R is different group for different amino acids. If there is more than one amino group present in an amino acid, they are considered as basic amino acids and if there is more than one carboxylic group then they are considered as acidic amino acids. The protein segment is made from N to C-terminal that is from amino group to the carboxylic group.

Interpretation Introduction

(c)

Interpretation:

The peptide bonds need to be identified.

Concept introduction Amino acids are compounds containing amino as well as acidic group. The general molecular structure of an amino acid is as follows:

${\text{NH}}_{\text{2}}\text{-CHR-COOH}$

Here, R is different group for different amino acids. If there is more than one amino group present in an amino acid, they are considered as basic amino acids and if there is more than one carboxylic group then they are considered as acidic amino acids.

Interpretation Introduction

(d)

Interpretation:

The alpha-carbon atoms need to be identified.

Concept introduction: