BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Abstract. Glycine and proline residues are frequently found in turn and loop structures of proteins and are believed to play an important role during chain compaction early in folding.

Detailed explanation-2: -In proline, the R-group is bonded to the central carbon as well as the nitrogen atom of the amino group, forming a house-like structure, as seen below. This makes proline unique in structure among all other amino acids.

Detailed explanation-3: -Proline confers an extended polypeptide structure and glycine is the only amino acid whose specific side group, -H, is so small that it forms no obstacle to hydrogen bonding between the peptide group and external molecules.

Detailed explanation-4: -An R-Group is a side chain attached to the -carbon of all amino acids. It decides the chemical versatility of the amino acid. For example, some R-Groups carry a charge, creating a polar molecule. Some R-groups are hydrophobic or hydrophillic.