Chapter 21, Problem 21.53P

Interpretation Introduction

Interpretation:

The structure of three different tripeptides should be drawn which are formed from two moles of serine and one mole of alanine.

Concept Introduction:

Proteins are polymeric biomolecules which are formed by the polymerization of amino acids. Amino acids are the organic molecules with $–{\text{NH}}_{\text{2}}$ and −COOH functional groups bonded on the same carbon atom of the molecule.

They polymerize by a peptide linkage to form dipeptide, oligopeptide and polypeptide molecules. Each peptide bond formation is a condensation reaction that occurs with the elimination of water molecules.