1dov

From Proteopedia

(Difference between revisions)

Revision as of 01:25, 10 September 2015

CRYSTAL STRUCTURE OF THE ALPHA-CATENIN DIMERIZATION DOMAIN

Structural highlights

1dov is a 1 chain structure with sequence from Lk3 transgenic mice. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum

Function

[CTNA1_MOUSE] Associates with the cytoplasmic domain of a variety of cadherins. The association of catenins to cadherins produces a complex which is linked to the actin filament network, and which seems to be of primary importance for cadherins cell-adhesion properties. Can associate with both E- and N-cadherins. Originally believed to be a stable component of E-cadherin/catenin adhesion complexes and to mediate the linkage of cadherins to the actin cytoskeleton at adherens junctions. In contrast, cortical actin was found to be much more dynamic than E-cadherin/catenin complexes and CTNNA1 was shown not to bind to F-actin when assembled in the complex suggesting a different linkage between actin and adherens junctions components. The homodimeric form may regulate actin filament assembly and inhibit actin branching by competing with the Arp2/3 complex for binding to actin filaments. May play a crucial role in cell differentiation.^[1]

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

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.

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^[2]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Drees F, Pokutta S, Yamada S, Nelson WJ, Weis WI. Alpha-catenin is a molecular switch that binds E-cadherin-beta-catenin and regulates actin-filament assembly. Cell. 2005 Dec 2;123(5):903-15. PMID:16325583 doi:10.1016/j.cell.2005.09.021
↑ Pokutta S, Weis WI. Structure of the dimerization and beta-catenin-binding region of alpha-catenin. Mol Cell. 2000 Mar;5(3):533-43. PMID:10882138

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 See Also
6 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1dov"

Categories: Lk3 transgenic mice | Pokutta, S | Weis, W I | Cell adhesion | Four-helix bundle

@@ Line 2: / Line 2: @@
 <StructureSection load='1dov' size='340' side='right' caption='[[1dov]], [[Resolution|resolution]] 3.00&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[1dov]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1DOV OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1DOV FirstGlance]. <br>
+<table><tr><td colspan='2'>[[1dov]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Lk3_transgenic_mice Lk3 transgenic mice]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1DOV OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1DOV FirstGlance]. <br>
-</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1dov FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1dov OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1dov RCSB], [http://www.ebi.ac.uk/pdbsum/1dov PDBsum]</span></td></tr>
+</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1dov FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1dov OCA], [http://pdbe.org/1dov PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1dov RCSB], [http://www.ebi.ac.uk/pdbsum/1dov PDBsum]</span></td></tr>
 </table>
 == Function ==
@@ Line 25: / Line 25: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 1dov" style="background-color:#fffaf0;"></div>
 ==See Also==
@@ Line 32: / Line 33: @@
 __TOC__
 </StructureSection>
-[[Category: Mus musculus]]
+[[Category: Lk3 transgenic mice]]
 [[Category: Pokutta, S]]
 [[Category: Weis, W I]]
 [[Category: Cell adhesion]]
 [[Category: Four-helix bundle]]

1dov

From Proteopedia

Revision as of 01:25, 10 September 2015

CRYSTAL STRUCTURE OF THE ALPHA-CATENIN DIMERIZATION DOMAIN

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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