Chapter 9, Problem 9.89EP

(a)

Interpretation Introduction

Interpretation: The number of different primary structures possible for a four-amino-acid segment of a protein, if the segment contains two glycine units and two alanine units has to be stated.

Concept introduction: The primary protein structure is the order of linking of the amino acids in proteins.  The primary protein structure includes the number of amino acids linked, kind of amino acids present and the order of attachment of amino acids.

(b)

Interpretation Introduction

Interpretation: The number of different primary structures possible for a four-amino-acid segment of a protein, if the segment contains two glycine units, one alanine unit, and one valine unit has to be stated.

Concept introduction: The primary protein structure is the order of linking of the amino acids in proteins.  The primary protein structure includes the number of amino acids linked, kind of amino acids present and the order of attachment of amino acids.