Cell Signaling Technology

Product Pathways - Development

β-Catenin Blocking Peptide #1002

Description

This peptide is used to block β-Catenin (6B3) Rabbit mAb #9582 and β-Catenin Antibody (Carboxy-terminal Antigen) #9587 reactivity in immunohistochemistry protocols.

Quality Control

The quality of the peptide was evaluated by reversed-phase HPLC and by mass spectrometry. The peptide blocks β-Catenin (6B3) Rabbit mAb #9582 and β-Catenin Antibody (Carboxy-terminal Antigen) #9587 by immunohistochemistry.

IHC-P (paraffin)

IHC-P (paraffin)

Immunohistochemical analysis of paraffin-embedded breast carcinoma tissue using β-Catenin (6B3) Rabbit mAb #9582 in the presence of control peptide (left) or β-Catenin Blocking Peptide (right).

Applications

Directions for Use

For immunohistochemistry, add twice the volume of peptide as volume of antibody used in 100 µl total volume. Incubate for a minimum of 30 minutes prior to adding the entire volume to the slide. Recommended antibody dilutions can be found on the relevant product data sheet.

Background

β-Catenin is a key downstream effector in the Wnt signaling pathway (1). It is implicated in two major biological processes in vertebrates: early embryonic development (2) and tumorigenesis (3). CK1 phosphorylates β-catenin at Ser45. This phosphorylation event primes β-catenin for subsequent phosphorylation by GSK-3β (4-6). GSK-3β destabilizes β-catenin by phosphorylating it at Ser33, Ser37, and Thr41 (7). Mutations at these sites result in the stabilization of β-catenin protein levels and have been found in many tumor cell lines (8).

  1. Cadigan, K.M. and Nusse, R. (1997) Genes Dev. 11, 3286-3305.
  2. Wodarz, A. and Nusse, R. (1998) Annu. Rev. Cell. Dev. Biol. 14, 59-88.
  3. Polakis, P. (1999) Curr. Opin. Genet. Dev. 9, 15-21.
  4. Amit, S. et al. (2002) Genes Dev. 16, 1066-1076.
  5. Lin, C. et al. (2002) Cell 108, 837-847.
  6. Yanagawa, S. et al. (2002) EMBO J. 21, 1733-1742.
  7. Yost, C. et al. (1996) Genes Dev. 10, 1443-1454.
  8. Morin, P.J. (1997) Science 275, 1787-1790.

Application References

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Companion Products

For Research Use Only. Not For Use In Diagnostic Procedures.

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