Clathrin is the major protein of the polyhedral coat of coated pits and vesicles. Clathrin coats are formed from molecules containing 3 heavy chains and 3 light chains (By similarity). Interacts with TPLATE and CHC2. Cytoplasmic face of coated pits and vesicles (By similarity). Localized in the forming cell plate and the cortical division zone (CDZ) during cytokinesis. Expressed in root epidermal cells and root hairs (at the protein level). Belongs to the clathrin light chain family.