All of the following types of interactions cooperate in stabilizing the teiary structures of globular proteins except: (A) Disulphide bonds, (B) Hydrogen bonds, (C) Ionic interactions, (D) Peptide bonds
Answer is D. Peptide bonds are not involved in stabilizing teiary structure of proteins.It forms the primary structure of proteins. Interactions stabilizing teiary structure of proteins are as follows: Disulfide bonds Hydrophobic interactions Hydrogen bonds Ionic interactions NOTE: Hydrogen bond and Van der waal interactions are involved in the formation of alpha helix(secondary structure) Reference: Harpers illustrated Biochemistry 31st Edition pg 39