Not all proteins have this level of protein architecture.
A) primary structure
B) secondary structure
C) tertiary structure
D) quaternary structure
E) both secondary and tertiary structures

Question

Quizplus · Accepted Answer

All proteins have a primary structure, which is their sequence of amino acids. Secondary structure refers to local folded structures that form within a polypeptide due to interactions between atoms of the backbone. Tertiary structure is the overall three-dimensional structure of a single protein molecule. Quaternary structure is a level of structure that not all proteins have; it refers to the structure formed by several protein molecules (polypeptide chains), often called protein subunits, which function as a single protein complex.

Not All Proteins Have This Level of Protein Architecture