1ki1: Difference between revisions

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-[[Image:1ki1.gif|left|200px]]
- {{Structure
+==Guanine Nucleotide Exchange Region of Intersectin in Complex with Cdc42==
-|PDB= 1ki1 |SIZE=350|CAPTION= <scene name='initialview01'>1ki1</scene>, resolution 2.3&Aring;
+<StructureSection load='1ki1' size='340' side='right'caption='[[1ki1]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
-|SITE=
+== Structural highlights ==
-|LIGAND= <scene name='pdbligand=SO4:SULFATE ION'>SO4</scene>
+<table><tr><td colspan='2'>[[1ki1]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KI1 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1KI1 FirstGlance]. <br>
-|ACTIVITY=
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.3&#8491;</td></tr>
-|GENE=
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</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=1ki1 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ki1 OCA], [https://pdbe.org/1ki1 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1ki1 RCSB], [https://www.ebi.ac.uk/pdbsum/1ki1 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1ki1 ProSAT]</span></td></tr>
+</table>
+== Function ==
+[https://www.uniprot.org/uniprot/CDC42_HUMAN CDC42_HUMAN] Plasma membrane-associated small GTPase which cycles between an active GTP-bound and an inactive GDP-bound state. In active state binds to a variety of effector proteins to regulate cellular responses. Involved in epithelial cell polarization processes. Regulates the bipolar attachment of spindle microtubules to kinetochores before chromosome congression in metaphase. Plays a role in the extension and maintenance of the formation of thin, actin-rich surface projections called filopodia. Mediates CDC42-dependent cell migration.<ref>PMID:14978216</ref> <ref>PMID:15642749</ref> <ref>PMID:17038317</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/ki/1ki1_consurf.spt"</scriptWhenChecked>
+    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.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=1ki1 ConSurf].
+<div style="clear:both"></div>
-'''Guanine Nucleotide Exchange Region of Intersectin in Complex with Cdc42'''
+==See Also==
+*[[GTP-binding protein 3D structures|GTP-binding protein 3D structures]]
+*[[Intersectin|Intersectin]]
-==Overview==
+== References ==
-Activation of Rho-family GTPases involves the removal of bound GDP and the subsequent loading of GTP, all catalyzed by guanine nucleotide exchange factors (GEFs) of the Dbl-family. Despite high sequence conservation among Rho GTPases, Dbl proteins possess a wide spectrum of discriminatory potentials for Rho-family members. To rationalize this specificity, we have determined crystal structures of the conserved, catalytic fragments (Dbl and pleckstrin homology domains) of the exchange factors intersectin and Dbs in complex with their cognate GTPases, Cdc42 and RhoA, respectively. Structure-based mutagenesis of intersectin and Dbs reveals the key determinants responsible for promoting exchange activity in Cdc42, Rac1 and RhoA. These findings provide critical insight into the structural features necessary for the proper pairing of Dbl-exchange factors with Rho GTPases and now allow for the detailed manipulation of signaling pathways mediated by these oncoproteins in vivo.
+<references/>
+__TOC__
-==About this Structure==
+</StructureSection>
-KI1 is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KI1 OCA].
-==Reference==
-Structural basis for the selective activation of Rho GTPases by Dbl exchange factors., Snyder JT, Worthylake DK, Rossman KL, Betts L, Pruitt WM, Siderovski DP, Der CJ, Sondek J, Nat Struct Biol. 2002 Jun;9(6):468-75. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/12006984 12006984]
 [[Category: Homo sapiens]]
-[[Category: Protein complex]]
+[[Category: Large Structures]]
-[[Category: Der, C J.]]
+[[Category: Der CJ]]
-[[Category: Pruitt, W M.]]
+[[Category: Pruitt WM]]
-[[Category: Snyder, J T.]]
+[[Category: Snyder JT]]
-[[Category: Sondek, J.]]
+[[Category: Sondek J]]
-[[Category: SO4]]
-[[Category: dh domain]]
-[[Category: ph domain]]
-[[Category: protein-protein complex]]
-[[Category: rho gtpase]]
-''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 12:17:46 2008''