Immunofluorescent analysis of HeLa cells using a Phospho-SMAD3 pSer208 polyclonal antibody (Product # PA5-12693) at a dilution of 1:10-50. Primary antibody was detected with goat anti-rabbit lgG, fluor-conjugated secondary antibody (green). Actin filaments have been labeled with red dye conjugated phalloidin.
|Tested species reactivity||Human|
|Host / Isotype||Rabbit / IgG|
|Immunogen||KLH conjugated synthetic phosphopeptide corresponding to amino acid residues surrounding S208 of human SMAD3|
|Purification||Antigen affinity chromatography|
|Contains||0.09% sodium azide|
|Storage Conditions||-20° C, Avoid Freeze/Thaw Cycles|
|Tested Applications||Dilution *|
|Dot blot (DB)||1:500|
* Suggested working dilutions are given as a guide only. It is recommended that the user titrate the product for use in their own experiment using appropriate negative and positive controls.
This antibody is predicted to react with chicken, mouse, porcine and rat based on sequence homology.
SMAD3, a receptor regulated SMAD (R-SMAD) is a transcriptional modulator activated by TGF-beta (transforming growth factor) and activin type 1 receptor kinase. SMAD3 is estimated to account for at least 80% of all TGF-beta-mediated response. Activated type I receptor phosphorylates receptor-activated SMADS (RSMADS) at their c-terminal two extreme serines in the SSXS motif. The phosphorylated R-SMAD translocate into nucleus, where they regulate transcription of target genes. SMAD3 signal transduction appears to be important in the rgulation of muscle-specific genes. Loss of SMAD3 is a feature of pediatric T-cell lymphoblastic leukemia, while upregulation of SMAD3 may be responsible for TGFB hyperresponsiveness observed in scleroderma.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.