Chapter 20, Problem 20.95EP

(a)

Interpretation Introduction

Interpretation: In an $\alpha$ helix secondary structure for a protein, the general shape of the protein backbone has to be described.

Concept introduction: The arrangement of the portion of protein backbone in space gives the secondary protein structure.  There are two types of secondary structure, the alpha helix and the beta pleated.

(b)

Interpretation Introduction

Interpretation: In an $\alpha$ helix secondary structure for a protein, the general locations for the amino acid R groups has to be described.

Concept introduction: The arrangement of the portion of protein backbone in space gives the secondary protein structure.  There are two types of secondary structure, the alpha helix and the beta pleated.