Fibronectin: Functional character and role in alcoholic liver disease

Figure 1 Domain structure and interaction sites of fibronectin. Fibronectin is a dimer comprised of two subunits which are covalently joined by two disulfide bridges near the COOH-terminus. Each subunit consists of three types of homologous structural domains called I, II, and III. Recognition sequences, integrin binding sites, cryptic sites and interactive regions of the molecule are labeled.