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SRP5172

Sigma-Aldrich

Catenin β, GST tagged human

recombinant, expressed in baculovirus infected Sf9 cells, ≥70% (SDS-PAGE), buffered aqueous glycerol solution

Synonym(s):

CTNNB, FLJ25606

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About This Item

CAS Number:
UNSPSC Code:
12352200
NACRES:
NA.32

biological source

human

recombinant

expressed in baculovirus infected Sf9 cells

Assay

≥70% (SDS-PAGE)

form

buffered aqueous glycerol solution

mol wt

~115 kDa

technique(s)

activity assay: suitable

solubility

water: soluble

suitability

suitable for molecular biology

NCBI accession no.

application(s)

cell analysis

shipped in

dry ice

storage temp.

−70°C

Gene Information

human ... CTNNB1(1499)

General description

Research area: Apoptosis. β-catenins are cytoplasmic proteins that are ubiquitously expressed. These proteins are associated with E-cadherin at cellular junctions. CTNNB1 (catenin β-1) belongs to the armadillo family of proteins. This protein possesses a 130 amino acid N-terminal domain, 12 imperfect repeats of 42 amino acids termed arm repeats, and a 100 amino acid C-terminal domain. The gene encoding β-catenin is localized on human chromosome 3p22.1.

Application

Catenin β, GST tagged human has been used:
  • as a component of protein kinase buffer for in vitro kinase assay
  • in in vitro citrullination assay to characterize β-catenin citrullination
  • to perform differentiation factor screening

Biochem/physiol Actions

β-catenin interacts with T-cell factor and lymphoid enhancer-binding factor (TCF and LEF) transcription factors and is an essential member of the Wingless-Wnt signal transduction pathway. The adenomatous polyposis coli (APC) tumor-suppressor protein, together with Axin and glycogen synthase kinase 3 β (GSK3β), form a Wnt-regulated signaling complex that mediates phosphorylation-dependent degradation of βcatenin by the proteasome. APC and the Siah-1 E3 ubiquitin-protein ligase-1 mediate a novel β-catenin degradation pathway linking p53 activation to cell cycle control. Activating mutations in the human β-catenin gene have been found in human colon cancer and melanomas. The protein has a role in homeostasis and development.

Physical form

Supplied in 50mM Tris-HCl, pH 7.5, 150mM NaCl, 10mM glutathione, 0.1mM EDTA, 0.25mM DTT, 0.1mM PMSF, 25% glycerol.

Preparation Note

after opening, aliquot into smaller quantities and store at -70 °C. Avoid repeating handling and multiple freeze/thaw cycles

Storage Class Code

10 - Combustible liquids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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? catenin in health: A review
Sharada Prakash
Journal of oral and maxillofacial surgery : official journal of the American Association of Oral and Maxillofacial Surgeons (2015)
C Arbore et al.
Nature communications, 13(1), 1146-1146 (2022-03-05)
α-catenin is a crucial protein at cell junctions that provides connection between the actin cytoskeleton and the cell membrane. At adherens junctions (AJs), α-catenin forms heterodimers with β-catenin that are believed to resist force on F-actin. Outside AJs, α-catenin forms
Regulation of ?-Catenin Function by the I?B Kinases*
Carmela Lamberti
The Journal of Biological Chemistry (2001)
??-Catenin pathway activation in breast cancer
is associated with triple-negative phenotype
but not with CTNNB1 mutation
Felipe
Modern Pathology (2010)
Somatic mutations of the ?-catenin gene are frequent in mouse and human hepatocellular carcinomas
Alix de La Coste
Proceedings of the National Academy of Sciences of the USA (1998)

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