The three dimensional structures of a protein is maintained by
A) disulfide linkages.
B) hydrophobic bonds.
C) hydrogen bonds.
D) ionic bonds.
E) all of the above

Question

Quizplus · Accepted Answer

The three-dimensional structure of a protein is maintained by all of the above bonds: disulfide linkages, hydrophobic bonds, hydrogen bonds, and ionic bonds. These bonds are essential for maintaining the proper folding and stability of a protein. Disulfide linkages are covalent bonds that form between two cysteine residues and help to connect different parts of the protein. Hydrophobic bonds occur between nonpolar amino acid residues and help to stabilize the interior of the protein. Hydrogen bonds occur between polar amino acid residues and help to maintain the secondary structure of the protein. Ionic bonds occur between charged amino acid residues and help to stabilize the tertiary and quaternary structure of the protein.

The Three Dimensional Structures of a Protein Is Maintained by