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Smad 2, 3 (Mothers against decapentaplegic homolog 2, 3)

Cat no: S1014-52Z

Supplier: United States Biological
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Smad proteins are regulators of transcription which transduce signals from TGF beta Receptors. Smad proteins homotrimerize, and when activated, two distinct homotrimers assemble into a heterosextamer. Smad proteins fall into three classes. The receptor-regulated Smad proteins, Smad 1, 2, 3, 5, and 9 couple to specific receptors and are phosphorylated by those receptors. Phosphorylated receptor-regulated Smad proteins then bind to a co-Smad, such as Smad4/DPC4, and the complex moves to the nucleus where it associates with FAST-1 to stimulate target gene transcription. A third class of Smad proteins is the inhibitory group of Smad 6, 7, 8. Smad proteins have Mad-homology domains 1 and 2 (MH1 and MH2). MH1 domains are involved in DNA binding, while MH2 domains function in homotrimerization, receptor interaction and phosphorylation. Smad 4 mutations are frequently found in cancer, all of which cluster to the MH1 and MH2 domains of the protein. Those in the MH2 domain affect the ability of the protein to homotrimerize. The phosphorylation of Smad proteins is the regulatory signal in their activation, and can be monitored by the use of phosphorylation state-specific antibodies. Applications: Suitable for use in Western Blot. Other applications not tested. Recommended Dilution: Western Blot: 1:2000 Optimal dilutions to be determined by the researcher. Positive Control: RIPA lysates from L6 cells. Storage and Stability: May be stored at 4 degrees C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20 degrees C. Aliquots are stable for at least 12 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.
Catalogue number: S1014-52Z
Reactivities: Human
Hosts: Rabbit
Applications: Western Blot
Size: 100ul
Form: Supplied as a liquid, 0.05% sodium azide.
P type: Mab
Isotype: IgG
Purity: Supernatant
Additional info: Recognizes human Smad 2, 3. Sequence Homology: mouse, rat.

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