Principles of Biochemistry

4.1.3.2 Based on the groups present in the side chain

             Based on the groups present in the side chain ‘R’ amino acids are classified as follows

i) Amino acids with aliphatic groups in the side chain 

ii) Amino acids with sulphur-containing group in the side chain  

iii) Amino acids with carboxylic group in the side chain    

iv) Amino acids with basic group in the side chain 

v) Amino acids with  heterocyclic group in the side chain

vi) Amino acids with aromatic group in the side chain