- Tel: 858.663.9055
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Email: info@nsjbio.com
- Tel: 858.663.9055
- Email: info@nsjbio.com
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Beta Catenin Polyclonal Antibody recognizes beta-catenin, a multifunctional protein encoded by the CTNNB1 gene that plays essential roles in cell adhesion, signal transduction, and transcriptional regulation. Also known as catenin beta 1, beta-catenin connects cadherin adhesion complexes to the actin cytoskeleton and functions as a central signaling mediator in the canonical Wnt pathway. These distinct activities allow CTNNB1 to coordinate tissue organization, cellular differentiation, and gene expression.
At the plasma membrane, beta-catenin associates with the cytoplasmic domains of classical cadherins, including E-cadherin. These interactions stabilize adherens junctions and help maintain epithelial integrity. Through its association with alpha-catenin and other junctional proteins, beta-catenin contributes to the organization of cell-cell contacts and the mechanical coordination of neighboring cells. Disruption of these complexes can alter cell polarity, tissue architecture, and cellular migration.
In the absence of Wnt stimulation, cytoplasmic beta-catenin is regulated by a destruction complex containing APC, AXIN, GSK3 beta, and CK1. Sequential phosphorylation promotes recognition by the ubiquitin-proteasome system, maintaining low levels of signaling-competent CTNNB1. Activation of canonical Wnt signaling inhibits this degradation process, allowing beta-catenin to accumulate and enter the nucleus. Nuclear beta-catenin interacts with TCF/LEF transcription factors to regulate genes involved in proliferation, differentiation, and cell fate determination.
Abnormal beta-catenin signaling is implicated in numerous malignancies, particularly colorectal cancer, where mutations affecting APC or CTNNB1 can produce sustained pathway activation. Altered beta-catenin localization and activity are also associated with epithelial-mesenchymal transition, developmental abnormalities, and changes in stem cell behavior. Its dual functions in adhesion and transcription make beta-catenin an important subject in cancer biology, developmental biology, and cell signaling research.
A Beta Catenin Polyclonal Antibody from NSJ Bioreagents supports investigations of CTNNB1 expression, cadherin-associated adhesion complexes, canonical Wnt signaling, and mechanisms regulating cellular proliferation and differentiation.
This antibody complements our Beta-Catenin Antibody / CTNNB1 Antibody (clone CTNNB1/2030R) for broader analysis of CTNNB1 expression and localization.
Titration of the Beta Catenin Polyclonal Antibody / CTNNB1 Antibody may be required due to differences in protocols and secondary/substrate sensitivity.
Amino acids 764-781 (DGLPPGDSNQLAWFDTDL) were used as the immunogen for this Beta Catenin Polyclonal Antibody (100% homologous in human, mouse and rat).
After reconstitution, the Beta Catenin Polyclonal Antibody can be stored for up to one month at 4oC. For long-term, aliquot and store at -20oC. Avoid repeated freezing and thawing.
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