View source for 2x2e


==Dynamin GTPase dimer, long axis form==
<StructureSection load='2x2e' size='340' side='right'caption='[[2x2e]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[2x2e]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2X2E OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2X2E FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ALF:TETRAFLUOROALUMINATE+ION'>ALF</scene>, <scene name='pdbligand=GDP:GUANOSINE-5-DIPHOSPHATE'>GDP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene></td></tr>
<tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[2x2f|2x2f]], [[2dyn|2dyn]], [[1dyn|1dyn]]</div></td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Dynamin_GTPase Dynamin GTPase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.6.5.5 3.6.5.5] </span></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=2x2e FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2x2e OCA], [https://pdbe.org/2x2e PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2x2e RCSB], [https://www.ebi.ac.uk/pdbsum/2x2e PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2x2e ProSAT]</span></td></tr>
</table>
== Function ==
[[https://www.uniprot.org/uniprot/DYN1_HUMAN DYN1_HUMAN]] Microtubule-associated force-producing protein involved in producing microtubule bundles and able to bind and hydrolyze GTP. Most probably involved in vesicular trafficking processes. Involved in receptor-mediated endocytosis. 
== 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/x2/2x2e_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=2x2e ConSurf].
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== Publication Abstract from PubMed ==
Dynamin is an atypical GTPase that catalyses membrane fission during clathrin-mediated endocytosis. The mechanisms of dynamin's basal and assembly-stimulated GTP hydrolysis are unknown, though both are indirectly influenced by the GTPase effector domain (GED). Here we present the 2.0 A resolution crystal structure of a human dynamin 1-derived minimal GTPase-GED fusion protein, which was dimeric in the presence of the transition state mimic GDP.AlF(4)(-).The structure reveals dynamin's catalytic machinery and explains how assembly-stimulated GTP hydrolysis is achieved through G domain dimerization. A sodium ion present in the active site suggests that dynamin uses a cation to compensate for the developing negative charge in the transition state in the absence of an arginine finger. Structural comparison to the rat dynamin G domain reveals key conformational changes that promote G domain dimerization and stimulated hydrolysis. The structure of the GTPase-GED fusion protein dimer provides insight into the mechanisms underlying dynamin-catalysed membrane fission.

G domain dimerization controls dynamin's assembly-stimulated GTPase activity.,Chappie JS, Acharya S, Leonard M, Schmid SL, Dyda F Nature. 2010 May 27;465(7297):435-40. Epub 2010 Apr 28. PMID:20428113<ref>PMID:20428113</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 2x2e" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Dynamin GTPase]]
[[Category: Human]]
[[Category: Large Structures]]
[[Category: Acharya, S]]
[[Category: Chappie, J S]]
[[Category: Dyda, F]]
[[Category: Leonard, M]]
[[Category: Schmid, S L]]
[[Category: Endocytosis]]
[[Category: Hydrolase]]
[[Category: Membrane fission]]
[[Category: Motor protein]]
[[Category: Nitration]]
[[Category: Nucleotide-binding]]