BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Introduction. Most amino acids such as alanine, valine, and leucine are chiral, meaning that such molecules can occur in their left-handed and in their right-handed form. These mirror-image forms are non-superimposable to each other and they are called enantiomers.

Detailed explanation-2: -These two amino acids, isoleucine and threonine, have in common the fact that they have two chiral centers.

Detailed explanation-3: -Group I: Nonpolar amino acids Isoleucine is an isomer of leucine, and it contains two chiral carbon atoms.