Question

In large proteins, peptide chains are much looped, twisted and folded back on themselves. The folded structure is due to the formation of ______ bonds.

Options

• phosphodiester

• peptide

• disulphide

• glycosidic

Answer 1

In large proteins, peptide chains are much looped, twisted and folded back on themselves. The folded structure is due to the formation of disulphide bonds.

Explanation:

The disulphide bond that forms between cysteine amino acids is primarily responsible for the folded and stabilised structure of big proteins. By connecting various polypeptide chain segments, these bonds aid in maintaining the 3-D structure of proteins.