Proteins are one of the most important bio-molecules in the cells. They have several functions such as:
1. Structural function: Provide shape and structure to the cells. Such as: cytoskeleton constituting the actins, microtubules and microfilaments.
2. Enzymatic actions: All the enzymes are proteins except the Ribozymes.
3. Cell- cell adhesion: ECM(Extracellular matrix), Junctions, Integrin etc.
4. Transport channels: Most of trans-membrane proteins forms channels and allow certain specific or non-specific molecules to transfer through it.
5. Cell-cell recognition: Glycoprotein and other periphery proteins on the cell membrane are required for cell recognition and communication.
6. Maintenance of Cell membrane Integrity.
7. Several physiological roles such as excretion, Digestion, respiration we require proteins.
8. Transportation of molecules/ Vesicles(Kinesins, Dynien etc.)
9. Signalling and regulating several biochemical process of the cells

More about Cell Membrane

1. Cell Membrane
2. Cell Membrane is made up of
3. Cell Membrane Structure
4. Functions of Cell Membrane
5. Cell Membrane is present in
6. Most important Characteristics of Cell Membrane
7. Importance of the Cell Membrane
8. Cell Membrane contains
9. Cell Membrane Vs Cell Wall
10. Cell Membrane Vs Plasma Membrane
11. Physical Structure of Cell Membrane Vs Physical Structure of Cell wall
12. Cell Membrane in Animal Cell
13. Cell Membrane Biogenesis
14. Cell Membrane bound Organelles
15. Cell Membrane less Organelles
16. Cell Membrane Biochemistry
17. Cell Membrane Bilayer Structure
18. Carbohydrates in the Cell membrane
19. Graphic of Fluid Mosaic Model for Cell Membrane
20. Cell membrane referred to as the “plasma membrane”
21. Various types of proteins within the Cell membrane
22. Cell Membrane Multiple Choice Questions(MCQs) and Answers
23. Cell Membrane Most Important Questions and Answers