45. Which statement regarding protein structure is NOT correct? (A)The tertiary structure of a protein is specified by its primary structure. (B)The tertiary structures of most proteins are heat-resistant. (C)The formation of protein tertiary structure can be assisted by chaperones. (D)The majority of protein tertiary structures are stabilized by non-covalent interactions. (E)An α-helix may undergo conformational change to become a β-sheet.