NP_001895
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NCBI GenBank Nucleotide #
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UniProt Primary Accession #
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UniProt Secondary Accession #
UniProt Related Accession #
Molecular Weight
9,501 Da
NCBI Official Full Name
catenin beta-1
NCBI Official Synonym Full Names
catenin (cadherin-associated protein), beta 1, 88kDa
NCBI Protein Information
catenin beta-1
UniProt Protein Name
Catenin beta-1
UniProt Synonym Protein Names
Beta-catenin
UniProt Synonym Gene Names
UniProt Entry Name
CTNB1_HUMAN
NCBI Summary for CTNNB1
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 Comments for CTNNB1
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: Transcription factor; Cell adhesion; Oncoprotein; Motility/polarity/chemotaxis; Nuclear receptor co-regulator; Actin-binding
Chromosomal Location of Human Ortholog: 3p21
Cellular Component: centrosome; basolateral plasma membrane; intercellular junction; fascia adherens; beta-catenin destruction complex; cytosol; transcription factor complex; cell-cell adherens junction; membrane; perinuclear region of cytoplasm; lamellipodium; 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; nucleus; cell junction
Molecular Function: protein C-terminus binding; transcription coactivator activity; protein phosphatase binding; transcription factor binding; ionotropic glutamate receptor binding; signal transducer activity; protein binding; enzyme binding; androgen receptor binding; cadherin binding; double-stranded DNA binding; protein complex binding; estrogen receptor binding; SMAD binding; nitric-oxide synthase binding; transcription factor activity; kinase binding; alpha-catenin binding; nuclear hormone receptor 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; osteoclast differentiation; Wnt receptor signaling pathway through beta-catenin; cell-cell adhesion; positive regulation of endothelial cell differentiation; regulation of cell fate specification; positive regulation of mesenchymal cell proliferation; embryonic foregut morphogenesis; synapse organization and biogenesis; male genitalia development; ectoderm 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; positive regulation of transcription from RNA polymerase II promoter; smooth muscle cell differentiation; 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; layer formation in the cerebral cortex; proximal/distal pattern formation; 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; stem cell maintenance; neural plate development; regulation of T cell proliferation; embryonic axis specification; synaptic vesicle transport; gastrulation with mouth forming second; liver development; regulation of angiogenesis; odontogenesis of dentine-containing teeth; myoblast differentiation; negative regulation of oligodendrocyte differentiation; positive regulation of osteoblast differentiation; Schwann cell proliferation; response to cadmium ion; ureteric bud branching; response to cytokine stimulus; androgen receptor signaling pathway; epithelial to mesenchymal transition; innate immune response; positive regulation of muscle cell differentiation; embryonic heart tube development; lens morphogenesis in camera-type eye; anterior/posterior axis specification
Disease: Pilomatrixoma; Mental Retardation, Autosomal Dominant 19; Ovarian Cancer; Colorectal Cancer; Hepatocellular Carcinoma
Research Articles on CTNNB1
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Products associated with anti-CTNNB1 antibody
Pathways associated with anti-CTNNB1 antibody
Diseases associated with anti-CTNNB1 antibody
Organs/Tissues associated with anti-CTNNB1 antibody
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