what job does protein perform
Membranes do not simply serve as walls between cellular compartments but are also participants in their metabolism . Many membrane proteins are transporters, moving solutes between the aqueous compartments.
These conglomerates are then recognized as a stimulus by the appropriate relay proteins at the cytoplasmic side of the membrane. Most cells have cytoskeletons : protein scaffolds that lend mechanical support to both the watery interior of the cell and to their fragile and deformable membranes.