Product Pathways - TGF-beta/Smad Signaling
Phospho-Smad2 (Ser465/467) (138D4) Rabbit mAb #3108
|3108L||300 µl (30 western blots)||---||In Stock||---|
|3108S||100 µl (10 western blots)||---||In Stock||---|
|3108P||40 µl (4 western blots)||---||In Stock||---|
|3108||carrier free and custom formulation / quantity||email request|
|W||1:1000||Human, Mouse, Rat, Mink||Endogenous||60||Rabbit IgG|
Species cross-reactivity is determined by western blot.
Applications Key: W=Western Blotting
Specificity / Sensitivity
Phospho-Smad2 (Ser465/467) (138D4) Rabbit mAb detects endogenous levels of Smad2 only when dually phosphorylated at serines 465 and 467, and may detect Smad3 phosphorylated at the equivalent sites. This antibody does not cross-react with other Smad-related proteins.
Source / Purification
Monoclonal antibody is produced by immunizing animals with a synthetic phosphopeptide corresponding to residues surrounding Ser465/467 of human Smad2.
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).
Following stimulation by TGF-β, Smad2 and Smad3 become phosphorylated at their carboxy-termini (Ser465/467 on Smad2; Ser423/425 on Smad3) by the receptor kinase TGF-β R1 (9-11). Following phosphorylation, Smad2 and Smad3 form a heteromeric complex with the co-Smad family member Smad4. These complexes are translocated to the nucleus where they bind DNA and regulate gene transcription.
- Heldin, C.H. et al. (1997) Nature 390, 465-71.
- Attisano, L. and Wrana, J.L. (1998) Curr Opin Cell Biol 10, 188-94.
- Derynck, R. et al. (1998) Cell 95, 737-40.
- Massagué, J. (1998) Annu Rev Biochem 67, 753-91.
- Whitman, M. (1998) Genes Dev 12, 2445-62.
- Wu, G. et al. (2000) Science 287, 92-7.
- Attisano, L. and Wrana, J.L. (2002) Science 296, 1646-7.
- Moustakas, A. et al. (2001) J Cell Sci 114, 4359-69.
- Abdollah, S. et al. (1997) J. Biol. Chem. 272, 27678-27685.
- Soucheinytskyi, S. et al. (1997) J. Biol. Chem. 272, 28107-28115.
- Liu, X. et al. (1997) Proc. Natl. Acad. Sci. USA 94, 10669-10674.
- Kong, B. et al. (2010) Oncogene 29, 5146-58. Applications: Western Blotting.
Have you published research involving the use of our products? If so we'd love to hear about it. Please let us know!
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This product is intended for research purposes only. The product is not intended to be used for therapeutic or diagnostic purposes in humans or animals.
U.S. Patent No. 5,675,063.
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