Answer:
Endocytosis is a cellular process which helps the cell to bring large pr macromolecules inside the cell.
There are many known mechanisms of endocytosis but one of the best-understood mechanism is which involves the molecule called clathrin.
Clathrin is a protein which helps the endocytosis process by assisting the formation of the coated pit in the inner side of the cellular membrane.
When the inner surface when forms a vesicle and pinches off in the cytoplasm, then the clathrin allows the selection of the vesicles cargo and pits to reduce the surface area of the vesicle.
Thus, clathrin plays an important role in endocytosis.
