BIOMOLECULES AND ENZYMES

Detailed explanation-1: -The –SH or sulfhydryl groups are present in the R group of cysteine amino acids. When two cysteine molecules are in close proximity, the sulfhydryl group present between them oxidizes and forms a bond called a disulfide bond a functional group.

Detailed explanation-2: -Cysteine, by virtue of its ability to form disulfide bonds, plays a crucial role in protein structure and in protein-folding pathways.

Detailed explanation-3: -The formation of disulfide bonds between cysteine residues occurs during the folding of many proteins that enter the secretory pathway. As the polypeptide chain collapses, cysteines brought into proximity can form covalent linkages during a process catalyzed by members of the protein disulfide isomerase family.