Myosin is a contractile protein found in muscles that is composed of three pairs of subunits, two heavy chains, and two pairs of two different types of light chains, for a total of six subunits. Myosin contains what level(s)of protein structure?
A)primary
B)primary and secondary
C)primary, secondary, and tertiary
D)primary, secondary, tertiary, and quaternary

Question

Quizplus · Accepted Answer

Myosin contains all four levels of protein structure - primary, secondary, tertiary, and quaternary. The linear sequence of amino acids (primary) determines the folding of the protein into alpha-helices and beta-sheets (secondary) which then fold into a 3D structure (tertiary). The six subunits of myosin then combine to form the final quaternary structure.

Myosin Is a Contractile Protein Found in Muscles That Is