Which of the following defines the tertiary structure of proteins?
A) It is the sequence of amino acid in proteins.
B) It refers to the repetitive conformations of the protein backbone.
C) It is the overall 3-D conformation of a polypeptide chain and the interactions of the side chains.
D) It is the interaction between the subunits of a protein that has more than one polypeptide chain.

Question

Quizplus · Accepted Answer

Tertiary structure refers to the three-dimensional arrangement of the entire polypeptide chain and the interactions between its side chains. This level of structure is stabilized by a variety of interactions including hydrogen bonds, disulfide bonds, van der Waals interactions, and hydrophobic interactions.

Which of the Following Defines the Tertiary Structure of Proteins