Storage: Rabbit IgG in 10mM phosphate buffered saline, pH7.4, 150mM sodium chloride, 0.05% BSA, 0.02% sodium azide and 50% glycerol.Store at +4℃ short term. Store at -20℃ long term. Avoid repeated freeze-thaw cycle.

Background: Receptor-regulated SMAD (R-SMAD) that is an intracellular signal transducer and transcriptional modulator activated by TGF-beta (transforming growth factor) and activin type 1 receptor kinases. Binds the TRE element in the promoter region of many genes that are regulated by TGF-beta and, on formation of the SMAD3/SMAD4 complex, activates transcription. Also can form a SMAD3/SMAD4/JUN/FOS complex at the AP-1/SMAD site to regulate TGF-beta-mediated transcription. 

Western blot analysis of Smad3 expression in (1) Jurkat cell lysate; (2) Rat liver tissue lysate.

For Research Use Only. Not for Use in Diagnostic Procedures.