1dov
From Proteopedia
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[[Image:1dov.gif|left|200px]] | [[Image:1dov.gif|left|200px]] | ||
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'''CRYSTAL STRUCTURE OF THE ALPHA-CATENIN DIMERIZATION DOMAIN''' | '''CRYSTAL STRUCTURE OF THE ALPHA-CATENIN DIMERIZATION DOMAIN''' | ||
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[[Category: Pokutta, S.]] | [[Category: Pokutta, S.]] | ||
[[Category: Weis, W I.]] | [[Category: Weis, W I.]] | ||
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Revision as of 11:05, 2 May 2008
CRYSTAL STRUCTURE OF THE ALPHA-CATENIN DIMERIZATION DOMAIN
Overview
In adherens junctions, alpha-catenin links the cadherin-beta-catenin complex to the actin-based cytoskeleton. alpha-catenin is a homodimer in solution, but forms a 1:1 heterodimer with beta-catenin. The crystal structure of the alpha-catenin dimerization domain, residues 82-279, shows that alpha-catenin dimerizes through formation of a four-helix bundle in which two antiparallel helices are contributed by each protomer. A slightly larger fragment, comprising residues 57-264, binds to beta-catenin. A chimera consisting of the alpha-catenin-binding region of beta-catenin linked to the amino terminus of alpha-catenin 57-264 behaves as a monomer in solution, as expected, since beta-catenin binding disrupts the alpha-catenin dimer. The crystal structure of this chimera reveals the interaction between alpha- and beta-catenin, and provides a basis for understanding adherens junction assembly.
About this Structure
1DOV is a Single protein structure of sequence from Mus musculus. Full crystallographic information is available from OCA.
Reference
Structure of the dimerization and beta-catenin-binding region of alpha-catenin., Pokutta S, Weis WI, Mol Cell. 2000 Mar;5(3):533-43. PMID:10882138 Page seeded by OCA on Fri May 2 14:05:54 2008