One of the main pathways by which membrane components and proteins are taken into a cell is through clathrin-mediated endocytosis. This pathway leads to the building and formation of clathrin-coated pits, also known as CCVs. Enthoprotin is a highly enriched protein localized on the CCVs, interacting with AP1 and Arf-binding protein 2, both clathrin adaptors. Through the binding of the clathrin heavy chain by its COOH-terminal domain, Enthoprotin induces clathrin production. Abnormalities in the gene encoding for Enthoprotin affect genetic susceptibility to Schizophrenia type I, a highly heritable psychosis. Enthoprotin is expressed throughout tissue types at intermediate to low levels.