Western Blot (WB)
(SMAD4 antibody (pAb) tested by Immunoprecipitation. 10 ul of SMAD4 antibody was used to immunoprecipitate SMAD4 from 250 ug of HeLa nuclear cell extract (lane 2). 10 ul of rabbit IgG was used as a negative control (lane 1). The immunoprecipitated protein was detected by Western blotting using the SMAD4 antibody at a dilution of 1:500.)
Rabbit anti-Human SMAD4 Polyclonal Antibody | anti-SMAD4 antibody
SMAD4 antibody (pAb)
IP: 10ul per IP
WB: 1:500-1:1,000 dilution
Note: Many chromatin-bound proteins are not soluble in a low salt nuclear extract and fractionate to the pellet. Therefore, we recommend a High Salt/Sonication Protocol when preparing nuclear extracts for Western blot.
Western Blot (WB)
(SMAD4 antibody (pAb) tested by Immunoprecipitation. 10 ul of SMAD4 antibody was used to immunoprecipitate SMAD4 from 250 ug of HeLa nuclear cell extract (lane 2). 10 ul of rabbit IgG was used as a negative control (lane 1). The immunoprecipitated protein was detected by Western blotting using the SMAD4 antibody at a dilution of 1:500.)
Western Blot (WB)
(SMAD4 antibody (pAb) tested by Immunoprecipitation. 10 ul of SMAD4 antibody was used to immunoprecipitate SMAD4 from 250 ug of HeLa nuclear cell extract (lane 2). 10 ul of rabbit IgG was used as a negative control (lane 1). The immunoprecipitated protein was detected by Western blotting using the SMAD4 antibody at a dilution of 1:500.)
Western Blot (WB)
(SMAD4 antibody (pAb) tested by Western blot. Detection of SMAD4 by Western blot analysis. Nuclear extract of HeLa cells (30 ug) probed with SMAD4 antibody at a dilution of 1:500.)
Western Blot (WB)
(SMAD4 antibody (pAb) tested by Western blot. Detection of SMAD4 by Western blot analysis. Nuclear extract of HeLa cells (30 ug) probed with SMAD4 antibody at a dilution of 1:500.)
Background: SMAD4 (Mothers Against Decapentaplegic Homolog 4) or common SMAD (co-SMAD) is the coactivator and mediator of signal transduction by TGF-beta (transforming growth factor). Component of the heterotrimeric SMAD2/SMAD3-SMAD4 complex that forms in the nucleus and is required for the TGF-mediated signaling. Promotes binding of the SMAD2/SMAD4/FAST-1 complex to DNA and provides an activation function required for SMAD1 or SMAD2 to stimulate transcription. Component of the multimeric SMAD3/SMAD4/JUN/FOS complex which forms at the AP1 promoter site; required for syngernistic transcriptional activity in response to TGF-beta. May act as a tumor suppressor. Positively regulates PDPK1 kinase activity by stimulating its dissociation from the 14-3-3 protein YWHAQ which acts as a negative regulator.
NCBI and Uniprot Product Information
NCBI Description
This gene encodes a member of the Smad family of signal transduction proteins. Smad proteins are phosphorylated and activated by transmembrane serine-threonine receptor kinases in response to transforming growth factor (TGF)-beta signaling. The product of this gene forms homomeric complexes and heteromeric complexes with other activated Smad proteins, which then accumulate in the nucleus and regulate the transcription of target genes. This protein binds to DNA and recognizes an 8-bp palindromic sequence (GTCTAGAC) called the Smad-binding element (SBE). The protein acts as a tumor suppressor and inhibits epithelial cell proliferation. It may also have an inhibitory effect on tumors by reducing angiogenesis and increasng blood vessel hyperpermeability. The encoded protein is a crucial component of the bone morphogenetic protein signaling pathway. The Smad proteins are subject to complex regulation by post-translational modifications. Mutations or deletions in this gene have been shown to result in pancreatic cancer, juvenile polyposis syndrome, and hereditary hemorrhagic telangiectasia syndrome. [provided by RefSeq, Aug 2017]
Uniprot Description
SMAD4: transcription factor that mediates signal transduction by the transforming growth factor superfamily. The common smad (co-smad). Binds directly to consensus DNA-binding elements in the promoters of target genes. Promotes binding of the Smad2/Smad4/Fast-1 complex to DNA and provides an activation function required for Smad1 or Smad2 to stimulate transcription.
Protein type: Nuclear receptor co-regulator; Transcription, coactivator/corepressor; DNA-binding
Chromosomal Location of Human Ortholog: 18q21.1
Cellular Component: nucleoplasm; centrosome; transcription factor complex; cytoplasm; nuclear chromatin; nucleus; cytosol
Molecular Function: collagen binding; identical protein binding; protein binding; protein homodimerization activity; transforming growth factor beta receptor, common-partner cytoplasmic mediator activity; DNA binding; sequence-specific DNA binding; metal ion binding; chromatin binding; transcription factor activity
Biological Process: developmental growth; axon guidance; somatic stem cell maintenance; positive regulation of transcription, DNA-dependent; sebaceous gland development; negative regulation of transcription from RNA polymerase II promoter; palate development; BMP signaling pathway; negative regulation of cell proliferation; regulation of transforming growth factor beta receptor signaling pathway; transforming growth factor beta receptor signaling pathway; mesoderm development; neural crest cell differentiation; positive regulation of BMP signaling pathway; transcription initiation from RNA polymerase II promoter; regulation of transforming growth factor-beta2 production; transcription, DNA-dependent; regulation of binding; in utero embryonic development; neuron fate commitment; positive regulation of transforming growth factor beta receptor signaling pathway; gastrulation with mouth forming second; somite rostral/caudal axis specification; formation of anatomical boundary; SMAD protein complex assembly; endothelial cell activation; cell proliferation; ureteric bud branching; response to hypoxia; positive regulation of transcription from RNA polymerase II promoter; gene expression; regulation of hair follicle development; negative regulation of cell growth; negative regulation of transcription, DNA-dependent; negative regulation of protein catabolic process; endoderm development
Disease: Pancreatic Cancer; Juvenile Polyposis Syndrome; Myhre Syndrome; Juvenile Polyposis/hereditary Hemorrhagic Telangiectasia Syndrome
Research Articles on SMAD4
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Product Notes
The SMAD4 smad4 (Catalog #AAA388986) is an Antibody produced from Rabbit and is intended for research purposes only. The product is available for immediate purchase. The SMAD4 antibody (pAb) reacts with Human and may cross-react with other species as described in the data sheet. AAA Biotech's SMAD4 can be used in a range of immunoassay formats including, but not limited to, Immunoprecipitation (IP), Western Blot (WB). Applications Validated: IP: 10ul per IP WB: 1:500-1:1,000 dilution Note: Many chromatin-bound proteins are not soluble in a low salt nuclear extract and fractionate to the pellet. Therefore, we recommend a High Salt/Sonication Protocol when preparing nuclear extracts for Western blot. Researchers should empirically determine the suitability of the SMAD4 smad4 for an application not listed in the data sheet. Researchers commonly develop new applications and it is an integral, important part of the investigative research process. It is sometimes possible for the material contained within the vial of "SMAD4, Polyclonal Antibody" to become dispersed throughout the inside of the vial, particularly around the seal of said vial, during shipment and storage. We always suggest centrifuging these vials to consolidate all of the liquid away from the lid and to the bottom of the vial prior to opening. Please be advised that certain products may require dry ice for shipping and that, if this is the case, an additional dry ice fee may also be required.Precautions
All products in the AAA Biotech catalog are strictly for research-use only, and are absolutely not suitable for use in any sort of medical, therapeutic, prophylactic, in-vivo, or diagnostic capacity. By purchasing a product from AAA Biotech, you are explicitly certifying that said products will be properly tested and used in line with industry standard. AAA Biotech and its authorized distribution partners reserve the right to refuse to fulfill any order if we have any indication that a purchaser may be intending to use a product outside of our accepted criteria.Disclaimer
Though we do strive to guarantee the information represented in this datasheet, AAA Biotech cannot be held responsible for any oversights or imprecisions. AAA Biotech reserves the right to adjust any aspect of this datasheet at any time and without notice. It is the responsibility of the customer to inform AAA Biotech of any product performance issues observed or experienced within 30 days of receipt of said product. To see additional details on this or any of our other policies, please see our Terms & Conditions page.Item has been added to Shopping Cart
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