Function
Fibronectin (Fn) is a glycoprotein which binds extracellular matrix components like integrin, collagen, fibrin and others. It is a component of cell adhesion[1].
Relevance
Fn is associated with wound healing. Fn is a potential marker for radiation resistance.
Disease
Overexpression of Fn1 is associated with lung cancer[2].
Structural insights
Fn is a dimer of homologous monomers linked by S-S bond. Each monomer contains 3 types of modules: FnI, FnII and FnIII. Each module contains several numbered protein binding domains, i.e., FnI6-FnII1-2-FnI7-9 is the gelatin binding domain (GBD).
- ↑ Pankov R, Yamada KM. Fibronectin at a glance. J Cell Sci. 2002 Oct 15;115(Pt 20):3861-3. PMID:12244123
- ↑ Han S, Khuri FR, Roman J. Fibronectin stimulates non-small cell lung carcinoma cell growth through activation of Akt/mammalian target of rapamycin/S6 kinase and inactivation of LKB1/AMP-activated protein kinase signal pathways. Cancer Res. 2006 Jan 1;66(1):315-23. PMID:16397245 doi:https://dx.doi.org/10.1158/0008-5472.CAN-05-2367