Upstream / Downstream
Explore pathways related to this product.
CST Antibody Performance Guarantee
Find answers on our FAQs page.
PTM information and tools available.
Phospho-Smad3 (Ser423/425) (D12E11) Rabbit mAb #8769
This product is discontinued
Gallery: Phospho-Smad3 (Ser423/425) (D12E11) Rabbit mAb #8769
Phospho-Smad3 (Ser423/425) (D12E11) Rabbit mAb recognizes endogenous levels of Smad3 protein when phosphorylated at Ser422 only, at both Ser423 and Ser425, or at Ser422, Ser423, and Ser425. This antibody also weakly recognizes the equivalent phospho-residues of Smad2 protein (Ser464, Ser465, and Ser467).
Monoclonal antibody is produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Ser422/423/425 of human Smad3 protein.
Members of the Smad family of signal transduction molecules are components of a critical intracellular pathway that transmit TGF-β signals from the cell surface into the nucleus. Three distinct classes of Smads have been defined: the receptor-regulated Smads (R-Smads), which include Smad1, 2, 3, 5, and 8; the common-mediator Smad (co-Smad), Smad4; and the antagonistic or inhibitory Smads (I-Smads), Smad6 and 7 (1-5). Activated type I receptors associate with specific R-Smads and phosphorylate them on a conserved carboxy terminal SSXS motif. The phosphorylated R-Smad dissociates from the receptor and forms a heteromeric complex with the co-Smad (Smad4), allowing translocation of the complex to the nucleus. Once in the nucleus, Smads can target a variety of DNA binding proteins to regulate transcriptional responses (6-8).
For Research Use Only. Not For Use In Diagnostic Procedures. Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc. Alexa Fluor is a registered trademark of Life Technologies Corporation. DRAQ5 is a registered trademark of Biostatus Limited.