BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Isoleucine is an isomer of leucine, and it contains two chiral carbon atoms. Proline is unique among the standard amino acids in that it does not have both free -amino and free -carboxyl groups. Instead, its side chain forms a cyclic structure as the nitrogen atom of proline is linked to two carbon atoms.

Detailed explanation-2: -Proline is an amino acid and belongs to the class which has hydrocarbon R-groups. “It does not contain the amino group-NH2 but is rather a secondary amine.

Detailed explanation-3: -Proline contains a secondary amine group, called an imine, instead of a primary amine group. For this reason, proline is called an imino acid.

Detailed explanation-4: -However, due to the cyclic binding of the three-carbon side chain to the nitrogen of the backbone, proline lacks a primary amine group (−NH2). The nitrogen in proline is properly referred to as a secondary amine.

Detailed explanation-5: -Proline is an amino acid, or a building block for protein. The body can make proline on its own, but it is also consumed in the diet.