Chapter 24.2A, Problem 24.2P

SUB-PART

(a)

Interpretation Introduction

Interpretation:

The relationship between (R)-cysteine and (S)-alanine is to be stated. If (R)-cysteine and (S)-alanine have opposite three dimensional configurations or the same configuration is to be predicted.

Concept introduction:

The biopolymers of $\text{α}$-amino acids are called as proteins. The $\text{α}$-amino acids are those amino acids in which amino groups are bonded to $\text{α}$-carbon atoms, next to the carbonyl group.

Cahn-Ingold-Prelog rules also referred as CIP rules are used in organic chemistry for naming stereoisomer of a molecule. It assigns $\text{R/S}$ notation for stereo center or $\text{Z/E}$ notation for each double bond to specify the exact configuration of the molecule.

(b)

Interpretation Introduction

Interpretation:

If (R)-cysteine is a D-amino acid or an L-amino acid is to be identified.

Concept introduction:

The biopolymers of $\text{α}$-amino acids are called as proteins. The $\text{α}$-amino acids are those amino acids in which amino groups are bonded to $\text{α}$-carbon atoms, next to the carbonyl group.

Cahn-Ingold-Prelog rules also referred as CIP rules are used in organic chemistry for naming stereoisomer of a molecule. It assigns $\text{R/S}$ notation for stereo center or $\text{Z/E}$ notation for each double bond to specify the exact configuration of the molecule.