Chapter 18, Problem 18.112GP

Interpretation Introduction

Interpretation:

Amino acids that can form hydrogen bonds with side chains has to be listed, any two example showing the hydrogen bonding to each other has to be drawn and  also hydrogen bond to water has to be sketched.

Concept introduction:

• Many amino acids are linked together through amide bonds to form a biologically large molecule known to be proteins.
• Amino functional group is $(-N{H}_2)$ and carboxyl functional group is $(-COOH)$ and a $R$ (alkyl) group is considered as side chain, when all these are bonded to same carbon atom.
• Charged $R$ (alkyl) groups in amino acid can interact with water through hydrogen bonding give rise to hydrophilic interaction.
• Hydrogen bonding is the electrostatic interaction that takes place between hydrogen and an electronegative atom.