Anti-c-Fos

In 1X PBS, pH 7.4, with 0.09% sodium azide. The Fos family consists of 4 members: c-FOS, FOSB, FOSL1, and FOSL2. These leucine zipper proteins can dimerize with proteins of the JUN family, thereby forming the transcription factor complex AP-1. As such, these proteins have been implicated as regulators of cell proliferation, differentiation, and transformation. In some cases, expression of the c-Fos gene has also been associated with apoptotic cell death. Protein function: Nuclear phosphoprotein which forms a tight but non- covalently linked complex with the JUN/AP-1 transcription factor. In the heterodimer, FOS and JUN/AP-1 basic regions each seems to interact with symmetrical DNA half sites. On TGF-beta activation, forms a multimeric SMAD3/SMAD4/JUN/FOS complex at the AP1/SMAD- binding site to regulate TGF-beta-mediated signaling. Has a critical function in regulating the development of cells destined to form and maintain the skeleton. It is thought to have an important role in signal transduction, cell proliferation and differentiation. In growing cells, activates phospholipid synthesis, possibly by activating CDS1 and PI4K2A. This activity requires Tyr-dephosphorylation and association with the endoplasmic reticulum. [The UniProt Consortium]