Rabbit beta-Catenin Polyclonal Antibody | anti-CTNNB1 antibody

beta-Catenin (Tyr-489)[gamma-Catenin (Tyr-480)], phospho-specific Antibody

Cat. Num. AAA474282

• Gene Names: CTNNB1; CTNNB; MRD19; armadillo
• Reactivity: Human, Rat, Mouse
• Applications: Western Blot, ELISA, Immunocytochemistry
• Synonyms: beta-Catenin; Polyclonal Antibody; beta-Catenin (Tyr-489)[gamma-Catenin (Tyr-480)]; phospho-specific Antibody; phospho-specific; Catenin 2 Tyr-489; anti-CTNNB1 antibody

• Host: Rabbit
• Reactivity: Human, Rat, Mouse
• Clonality: Polyclonal
• Specificity: This antibody was cross-adsorbed to phospho-beta-Catenin (Tyr-654) peptide before affinity purification using phospho-beta-Catenin (Tyr-489) peptide (without carrier). The antibody detects 84 and 88kDa* proteins corresponding to the molecular mass of gamma-Catenin and beta-Catenin, respectively, on SDS-PAGE immunoblots of A431 cells treated with pervanadate, but does not detect these proteins in control cells.
• Form/Format: Rabbit polyclonal, affinity-purified antibody is supplied in 100ul phosphate-buffered saline, 50% glycerol, 1mg/ml BSA, and 0.05% sodium azide.

• Applicable Applications for anti-CTNNB1 antibody: Western Blot (WB), ELISA (EIA), Immunocytochemistry (ICC)
• Application Notes: ELISA: 1:2000; ICC: 1:250; WB: 1:1000
• Immunogen: Phospho-beta-Catenin (Tyr-489) synthetic peptide corresponds to amino acid residues around tyrosine 489 of human beta-Catenin. This peptide sequence is highly conserved in rat and mouse beta-Catenin, and has high homology to the conserved site in gamma-Catenin (Tyr-480).
• Preparation and Storage: Store at -20 degree C. Stable for 1 year.

Western Blot (WB)

(Western blot analysis of A431 cells stimulated with pervanadate (1mM) for 30 min (lanes 1, 3, & 5) then treated with akaline phosphatase (lanes 2, 4, & 6). The blot was probed with anti-gamma-Catenin (CM1111), anti-beta-Catenin (Tyr-489) conserved site (CP2961), or anti-beta-Catenin (CM1181).)

Immunocytochemistry (ICC)

(Immunocytochemical labeling of beta-Catenin in pervanadate-treated A431 cells. The cells were labeled with mouse monoclonal beta-Catenin (CM1181) or rabbit polyclonal beta-Catenin (Tyr-489) antibodies, then the antibodies were detected using appropriate secondary antibodies conjugated to Cy3.)

Related Product Information for anti-CTNNB1 antibody

beta-Catenin is a 92kDa protein that binds to the cytoplasmic tail of E-Cadherin. The cadherins, transmembrane adhesion molecules, are found with catenins at adherens junctions. Deletions in the cytoplasmic domain of E-Cadherin eliminate catenin binding and result in a loss of cell adhesion. Tyrosine phosphorylation of beta-Catenin can regulate its interaction with critical components of adherens junctions. Both Fer and Fyn Kinases phosphorylate tyrosine 142 in vitro. Overexpression of these kinases in epithelial cells disrupts interactions between alpha- and beta-Catenins. The phosphorylation of tyrosine 142 may act as a switch from the transcriptional to the adhesive role of beta-Catenin. Src family kinases can also phosphorylate tyrosine 86, 489, and 654 in beta-Catenin. Tyr-654 phosphorylation regulates beta-Catenin binding to E-cadherin, while c-Abl phosphorylation of Tyr-489 decreases beta-Catenin binding to N-Cadherin and leads to nuclear translocation and transcriptional activation.

References

Roura, S. et al. (1999) J Biol Chem. 274(51) :36734.
Piedra, J. et al. (2003) Mol. Cell. Biol. 23(7):2287.
Brembeck, F.H. et al. (2004) Genes Dev. 18(18):2225.
Rhee, J. et al. (2007) Nat. Cell Biol. 9(8):883.

NCBI and Uniprot Product Information

• NCBI GI #: 148233338
• NCBI GeneID: 1499
• NCBI Accession #: NP_001091679.1
• NCBI GenBank Nucleotide #: NM_001098209.1
• UniProt Accession #: P35222; Q8NEW9; Q8NI94; Q9H391; A8K1L7
• Molecular Weight: 85,497 Da
• NCBI Official Full Name: catenin beta-1
• NCBI Official Synonym Full Names: catenin (cadherin-associated protein), beta 1, 88kDa
• NCBI Official Symbol: CTNNB1
• NCBI Official Synonym Symbols: CTNNB; MRD19; armadillo
• NCBI Protein Information: catenin beta-1
• UniProt Protein Name: Catenin beta-1
• Protein Family: Beta-catenin-like protein
• UniProt Gene Name: CTNNB1
• UniProt Synonym Gene Names: CTNNB
• UniProt Entry Name: CTNB1_HUMAN

NCBI Description

The protein encoded by this gene is part of a complex of proteins that constitute adherens junctions (AJs). AJs are necessary for the creation and maintenance of epithelial cell layers by regulating cell growth and adhesion between cells. The encoded protein also anchors the actin cytoskeleton and may be responsible for transmitting the contact inhibition signal that causes cells to stop dividing once the epithelial sheet is complete. Finally, this protein binds to the product of the APC gene, which is mutated in adenomatous polyposis of the colon. Mutations in this gene are a cause of colorectal cancer (CRC), pilomatrixoma (PTR), medulloblastoma (MDB), and ovarian cancer. Three transcript variants encoding the same protein have been found for this gene.[provided by RefSeq, Oct 2009]

Uniprot Description

CTNNB1: a regulator of cell adhesion and a key downstream effector in the Wnt signaling pathway. Implicated early embryonic development and tumorigenesis. Phosphorylated and destabilized by CK1 and GSK-3beta. Stabilized cytoplasmic beta-catenin is a hallmark of a variety of cancers. Stabilized beta-catenin translocates to the nucleus, where it acts as a transcriptional activator of T-cell factor (TCF)-regulated genes. Interacts with the PDZ domain of TAX1BP3, inhibiting its transcriptional activity. Two alternatively spliced human isoforms have been described.

Protein type: Cell adhesion; Nuclear receptor co-regulator; Motility/polarity/chemotaxis; Transcription factor; Oncoprotein; Actin-binding

Chromosomal Location of Human Ortholog: 3p21

Cellular Component: centrosome; basolateral plasma membrane; fascia adherens; intercellular junction; beta-catenin destruction complex; cytosol; transcription factor complex; cell-cell adherens junction; membrane; lamellipodium; perinuclear region of cytoplasm; cytoplasm; synapse; dendritic shaft; lateral plasma membrane; spindle pole; focal adhesion; tight junction; catenin complex; cell cortex; Z disc; nucleoplasm; adherens junction; apical part of cell; microvillus membrane; plasma membrane; cell junction; nucleus

Molecular Function: protein C-terminus binding; transcription coactivator activity; protein phosphatase binding; transcription factor binding; ionotropic glutamate receptor binding; protein binding; signal transducer activity; enzyme binding; androgen receptor binding; cadherin binding; double-stranded DNA binding; protein complex binding; estrogen receptor binding; nitric-oxide synthase binding; SMAD binding; kinase binding; transcription factor activity; nuclear hormone receptor binding; alpha-catenin binding

Biological Process: regulation of myelination; regulation of centriole-centriole cohesion; protein heterooligomerization; positive regulation of apoptosis; regulation of fibroblast proliferation; positive regulation of transcription, DNA-dependent; cell maturation; negative regulation of chondrocyte differentiation; T cell differentiation in the thymus; positive regulation of fibroblast growth factor receptor signaling pathway; Wnt receptor signaling pathway through beta-catenin; osteoclast differentiation; cell-cell adhesion; positive regulation of endothelial cell differentiation; embryonic foregut morphogenesis; positive regulation of mesenchymal cell proliferation; regulation of cell fate specification; ectoderm development; synapse organization and biogenesis; male genitalia development; cell adhesion; bone resorption; response to drug; positive regulation of neuroblast proliferation; positive regulation of I-kappaB kinase/NF-kappaB cascade; transcription, DNA-dependent; regulation of smooth muscle cell proliferation; hair cell differentiation; negative regulation of protein sumoylation; patterning of blood vessels; genitalia morphogenesis; muscle cell differentiation; midgut development; smooth muscle cell differentiation; positive regulation of transcription from RNA polymerase II promoter; embryonic digit morphogenesis; negative regulation of transcription, DNA-dependent; oocyte development; embryonic forelimb morphogenesis; negative regulation of osteoclast differentiation; glial cell fate determination; endodermal cell fate commitment; apoptosis; cell-matrix adhesion; neuron migration; cell fate specification; dorsal/ventral axis specification; positive regulation of histone H3-K4 methylation; negative regulation of transcription from RNA polymerase II promoter; embryonic hindlimb morphogenesis; response to estradiol stimulus; negative regulation of cell proliferation; central nervous system vasculogenesis; positive regulation of MAPKKK cascade; pancreas development; positive regulation of interferon type I production; fallopian tube development; proximal/distal pattern formation; layer formation in the cerebral cortex; negative regulation of mitotic cell cycle, embryonic; cell structure disassembly during apoptosis; Wnt receptor signaling pathway; hair follicle morphogenesis; thymus development; in utero embryonic development; regulation of T cell proliferation; embryonic axis specification; neural plate development; stem cell maintenance; synaptic vesicle transport; gastrulation with mouth forming second; liver development; regulation of angiogenesis; odontogenesis of dentine-containing teeth; negative regulation of oligodendrocyte differentiation; myoblast differentiation; Schwann cell proliferation; positive regulation of osteoblast differentiation; response to cadmium ion; ureteric bud branching; response to cytokine stimulus; androgen receptor signaling pathway; positive regulation of muscle cell differentiation; epithelial to mesenchymal transition; embryonic heart tube development; innate immune response; lens morphogenesis in camera-type eye; anterior/posterior axis specification

Disease: Pilomatrixoma; Mental Retardation, Autosomal Dominant 19; Ovarian Cancer; Colorectal Cancer; Hepatocellular Carcinoma