Do Proteins in the Plasma Membrane Have Special Roles?

If we were to weigh all of the components of the plasma membrane we would find that about half the weight of the membrane is protein. However, this is a bit misleading as the much smaller lipid molecules of the plasma membrane tend to outnumber protein molecules by about fifty to one. This means that the proteins tend to be larger and complex, which implies that they have important functions while phospholipids and cholesterol provide more structural support