General description
FOS is a member of the FOS gene family that consists of 4 members: FOS, FOSB, FOSL1, and FOSL2. FOS gene encodes a leucine zipper protein that can dimerize with proteins of the JUN family, thereby forming the transcription factor complex AP-1. FOS proteins have been implicated as regulators of cell proliferation, differentiation, and transformation. In some cases, expression of the FOS gene has also been associated with apoptotic cell death. FOS overexpression leads to decreased phosphorylation and dimerization of STAT1, which in turn downregulates p21 gene expression. This regulatory pathway may enhance the proliferation of lymphocytes in rheumatoid arthritis patients.
Physical form
Supplied in 50 mM Tris-HCl, pH 7.5, 150 mM NaCl, 10 mM glutathione, 0.1 mM EDTA, 0.25 mM DTT, 0.1 mM PMSF, 25% glycerol.
Preparation Note
After opening, aliquot into smaller quantities and store at -70 °C. Avoid repeating handling and multiple freeze/thaw cycles.
| biological source | human |
| recombinant | expressed in baculovirus infected Sf9 cells |
| assay | ≥70% (SDS-PAGE) |
| form | buffered aqueous glycerol solution |
| mol wt | ~78 kDa |
| NCBI accession no. | NM_005252 |
| application(s) | cell analysis |
| shipped in | dry ice |
| storage temp. | −70°C |
| Gene Information | human ... FOS(2353) |
