Which of the following best describes the role of myosin II isoforms in different cell types?
Myosin II isoforms assemble into filaments in skeletal muscle, cardiac muscle, and smooth muscle cells, but not in non-muscle cells
Myosin II isoforms assemble into filaments in skeletal muscle, cardiac muscle, smooth muscle, and non-muscle cells, with different filament configurations, depending on the cell type.
Myosin II has contractile functions in different kinds of muscle cells, but not in non-muscle cells.
Myosin II forms filaments in skeletal and cardiac muscle, but other myosins are responsible for all the contractility in smooth muscle and non-muscle cells.