1l7c: Difference between revisions

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-[[Image:1l7c.gif|left|200px]]
-<!--
-The line below this paragraph, containing "STRUCTURE_1l7c", creates the "Structure Box" on the page.
-You may change the PDB parameter (which sets the PDB file loaded into the applet)
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-{{STRUCTURE_1l7c|  PDB=1l7c  |  SCENE=  }}
-'''alpha-catenin fragment, residues 385-651'''
+==alpha-catenin fragment, residues 385-651==
+<StructureSection load='1l7c' size='340' side='right'caption='[[1l7c]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
+== Structural highlights ==
+<table><tr><td colspan='2'>[[1l7c]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1L7C OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1L7C FirstGlance]. <br>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.5&#8491;</td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></td></tr>
+<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1l7c FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1l7c OCA], [https://pdbe.org/1l7c PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1l7c RCSB], [https://www.ebi.ac.uk/pdbsum/1l7c PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1l7c ProSAT]</span></td></tr>
+</table>
+== Function ==
+[https://www.uniprot.org/uniprot/CTNA1_MOUSE 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.<ref>PMID:16325583</ref>
+== Evolutionary Conservation ==
+[[Image:Consurf_key_small.gif|200px|right]]
+Check<jmol>
+  <jmolCheckbox>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/l7/1l7c_consurf.spt"</scriptWhenChecked>
+    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked>
+    <text>to colour the structure by Evolutionary Conservation</text>
+  </jmolCheckbox>
+</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1l7c ConSurf].
+<div style="clear:both"></div>
+<div style="background-color:#fffaf0;">
+== Publication Abstract from PubMed ==
+alpha-Catenin is an integral component of adherens junctions, where it links cadherins to the actin cytoskeleton. alpha-Catenin is also required for the colocalization of the nectin/afadin/ponsin adhesion system to adherens junctions, and it specifically associates with the nectin-binding protein afadin. A proteolytic fragment of alpha-catenin, residues 385-651, contains the afadin-binding site. The three-dimensional structure of this fragment comprises two side-by-side four-helix bundles, both of which are required for afadin binding. The alpha-catenin fragment 385-651 binds afadin more strongly than the full-length protein, suggesting that the full-length protein harbors a cryptic binding site for afadin. Comparison of the alpha-catenin 385-651 structure with the recently solved structure of the alpha-catenin M-fragment (Yang, J., Dokurno, P., Tonks, N. K., and Barford, D. (2001) EMBO J. 20, 3645-3656) reveals a surprising flexibility in the orientation of the two four-helix bundles. alpha-Catenin and the actin-binding protein vinculin share sequence and most likely structural similarity within their actin-binding domains. Despite this homology, actin binding requires additional sequences adjacent to this region.
-==Overview==
+Biochemical and structural definition of the l-afadin- and actin-binding sites of alpha-catenin.,Pokutta S, Drees F, Takai Y, Nelson WJ, Weis WI J Biol Chem. 2002 May 24;277(21):18868-74. Epub 2002 Mar 20. PMID:11907041<ref>PMID:11907041</ref>
-alpha-Catenin is an integral component of adherens junctions, where it links cadherins to the actin cytoskeleton. alpha-Catenin is also required for the colocalization of the nectin/afadin/ponsin adhesion system to adherens junctions, and it specifically associates with the nectin-binding protein afadin. A proteolytic fragment of alpha-catenin, residues 385-651, contains the afadin-binding site. The three-dimensional structure of this fragment comprises two side-by-side four-helix bundles, both of which are required for afadin binding. The alpha-catenin fragment 385-651 binds afadin more strongly than the full-length protein, suggesting that the full-length protein harbors a cryptic binding site for afadin. Comparison of the alpha-catenin 385-651 structure with the recently solved structure of the alpha-catenin M-fragment (Yang, J., Dokurno, P., Tonks, N. K., and Barford, D. (2001) EMBO J. 20, 3645-3656) reveals a surprising flexibility in the orientation of the two four-helix bundles. alpha-Catenin and the actin-binding protein vinculin share sequence and most likely structural similarity within their actin-binding domains. Despite this homology, actin binding requires additional sequences adjacent to this region.
-==About this Structure==
+From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
-L7C is a [[Single protein]] structure of 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=1L7C OCA].
+</div>
+<div class="pdbe-citations 1l7c" style="background-color:#fffaf0;"></div>
-==Reference==
+==See Also==
-Biochemical and structural definition of the l-afadin- and actin-binding sites of alpha-catenin., Pokutta S, Drees F, Takai Y, Nelson WJ, Weis WI, J Biol Chem. 2002 May 24;277(21):18868-74. Epub 2002 Mar 20. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11907041 11907041]
+*[[Catenin 3D structures|Catenin 3D structures]]
+== References ==
+<references/>
+__TOC__
+</StructureSection>
+[[Category: Large Structures]]
 [[Category: Mus musculus]]
-[[Category: Single protein]]
+[[Category: Drees F]]
-[[Category: Drees, F.]]
+[[Category: Nelson WJ]]
-[[Category: Nelson, W J.]]
+[[Category: Pokutta S]]
-[[Category: Pokutta, S.]]
+[[Category: Takai Y]]
-[[Category: Takai, Y.]]
+[[Category: Weis WI]]
-[[Category: Weis, W I.]]
-[[Category: Four-helix bundle]]
-''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May  2 23:37:20 2008''