The structure of a protein that involves the interaction between two distinct polypeptide chains is
A)primary structure.
B)secondary structure.
C)tertiary structure.
D)quaternary structure.
E)both primary and secondary structure.

Question

Quizplus · Accepted Answer

Quaternary structure is the structure of a protein that involves the interaction between two or more distinct polypeptide chains. This level of protein structure is necessary for the function of many proteins, such as hemoglobin, which is made up of four distinct polypeptide chains. Primary structure refers to the linear sequence of amino acids in a single polypeptide chain, while secondary structure refers to local folding patterns such as alpha helices and beta sheets. Tertiary structure refers to the overall three-dimensional shape of a single polypeptide chain.

The Structure of a Protein That Involves the Interaction Between