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SRP5171

Sigma-Aldrich

Catenin α, GST tagged human

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

Synonym(s):

CAP102, CTNNA1, FLJ36832

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About This Item

CAS Number:
UNSPSC Code:
12352202
NACRES:
NA.32

biological source

human

recombinant

expressed in baculovirus infected Sf9 cells

Assay

≥70% (SDS-PAGE)

form

buffered aqueous glycerol solution

mol wt

~123 kDa

NCBI accession no.

application(s)

cell analysis

shipped in

dry ice

storage temp.

−70°C

Gene Information

human ... CTNNA1(1495)

General description

Catenin α is a novel actin-binding and -bundling protein. Catenin α is responsible for organizing and tethering actin filaments at the zones of E-cadherin-mediated cell-cell contact. Monomeric Catenin α can bind strongly to E-Cadherin-β-Catenin, whereas the dimer preferentially binds actin filaments. Different molecular conformations are associated with these different binding states, indicating that Catenin α is an allosteric protein. Catenin α directly regulates actin-filament organization by suppressing Arp2/3-mediated actin polymerization, likely by competing with the Arp2/3 complex for binding to actin filaments

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


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D L Rimm et al.
Proceedings of the National Academy of Sciences of the United States of America, 92(19), 8813-8817 (1995-09-12)
Calcium-dependent homotypic cell-cell adhesion, mediated by molecules such as E-cadherin, guides the establishment of classical epithelial cell polarity and contributes to the control of migration, growth, and differentiation. These actions involve additional proteins, including alpha- and beta-catenin (or plakoglobin) and
Frauke Drees et al.
Cell, 123(5), 903-915 (2005-12-06)
Epithelial cell-cell junctions, organized by adhesion proteins and the underlying actin cytoskeleton, are considered to be stable structures maintaining the structural integrity of tissues. Contrary to the idea that alpha-catenin links the adhesion protein E-cadherin through beta-catenin to the actin

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