Exalpha Biologicals, Inc.

Latest News

Exalpha Biologicals, Inc. is now a US distributor for Nordic-Mubio products

Nordic-MUbio develops and manufactures high quality antibody reagents for use in R&D. All our products are manufactured according to strict ISO 9001 quality guidelines, and our focus is on developing antibodies targetting Cell Adhesion, Nuclear and Cytoskeletal Proteins.

Nordic-MUbio is one of the leading antibody companies developing antibodies for zebrafish research – we currently have over 50 antibodies validated for immunofluorescence in zebrafish.

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Latest References

Akazawa, Y., et al. "Endoplasmic Reticulum Stress Contributes to Helicobacter Pylori VacA-Induced Apoptosis" PLoS ONE 8(12): e82322

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Homa, N.J., et al. "Epstein-Barr Virus Induces Global Changes in Cellular mRNA Isoform Usage That Are Important for the Maintenance of Latency" J. Virol., 2013, 87, 12291-12301

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Exalpha Biologicals, Inc.


  • Product Code: X1070M
  • Size: 100 µg
  • Availability: In Stock In Stock
  • Price (USD): $283

Cat #

X1070M		 Quantity:      

Data Sheet

Product Name



T-Cell Factor-4, BHLHB19, ITF2, SEF2







Product Type

Monoclonal Antibody


Human, Mouse


Western Blot, Immunohistochemistry, Immunoprecipitation


Protein A/G Chromatography


100 µg

Price (USD)



TCF 4 (T cell factor 4) is a member of the TCF/LEF (lymphoid enhancer factor) family of transcription factors. Members of this family along with catenin, are involved in mediating Wnt signaling by transactivating downstream genes. TCF 4 generates transcriptionally active complexes with catenin in colon carcinoma cells. Expression of TCF 4 is highest in the CNS and intestinal epithelium where Wnt signaling also plays an essential role in development. Aberrant TCF 4 transcription activity has been implicated in carcinogenesis of intestinal and mammary epithlia.


Hybridoma produced by the fusion of splenocytes from BALB/c mice immunized with recombinant protein corresponding to amino acids 31-331 of the human TCF-4 protein.

Positive Control

Cos-1 cells, HCT116 cells


Provided as 0.2µm sterile filtered solution in 0.7 M tris-glycine, pH 7.4, 0.105M NaCl, 30% glycerol with 0.035% sodium azide

Customer Storage

Product should be stored at -20°C. Aliquot to avoid freeze/thaw cycles

Target Molecular Weight


Product Image

Image Legend

Western blot analysis using anti-TCF-4, clone 6H5-3 antibody at 1 µg/ml on Cos-1 cell lysate control (1) and Cos-1 cells transfected with human TCF-4 (2).

Database Links:



1. Barker, N., et al. Resticted high level expression of TCF-4 protein in intestinal and mammary gland epithelium. Am. J. Pathol. 1999, 154, 29-35

2. Ishitani, M.L., et al. The TAK1-NLK-MAPK-related pathway antagonizes signalling between beta-catenin and transcription factor TCF. Nature 1999, 399, 798-802

3. Korinek, V., et al. Depletion of epithelial stem-cell compartments in the small intestine of mice lacking Tcf-4. Nature Genetics 1998, 19, 379-383

Product Specific References

This product has been used in:

1. Sampson, Ellen, M., et al, 'Negative regulation of the Wnt- Beta-Catenin pathway by the transcriptional represor HBPQ' The EMBO Journal 2001, 20, , 4500-4511
2. Uematsu, Kazutsugu, et al, 'Wnt Pathway Activation in Mesothelioma: Evidence of Dishevelled Overexpression and Transcriptional Activity of Beta Catenin' Journal of Cancer Research 2003, 63, , 4547-4551
3. Shimura, Tatsuo, 'Galectin-3, a Novel Binding Partner of Beta Catenin' Cancer Research 2004, 64, , 6363-6367