Recombinant Human SMAD3(C-terminal SXS deletion) fused with GST tag at N-terminal was expressed in E. coli.
SMAD3 is a direct mediator of transcriptional activation by the TGF receptor. The activity of SMAD3 is regulated by the TGF receptors, and SMAD3 is phosphorylated and associated with the ligand-bound receptor complex. TGF stimulation leads to phosphorylation and activation of SMAD3, which form a complex with SMAD4 that accumulate in the nucleus and regulate transcription of target genes such as CDK inhibitor. SMAD3 containing a C-terminal truncation acts as a dominant-negative inhibitor of the normal TGF response. SMAD3 is a major physiologic substrate of the G1 cyclin-dependent kinases CDK4 and CDK2.
50mM Tris-HCl, pH 7.5, 150mM NaCl, 10mM glutathione, 0.1mM EDTA, 0.25mM DTT, 0.1mM PMSF, 25% glycerol.
1 year at -70 centigrade from the date of shipment.
Store product at –70 centigrade. For optimal storage, aliquot target into smaller quantities after centrifugation and store at recommended temperature. For most favorable performance, avoid repeated handling and multiple freeze/thaw cycles.