3gn4: Difference between revisions

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-[[Image:3gn4.png|left|200px]]
+==Myosin lever arm==
+<StructureSection load='3gn4' size='340' side='right' caption='[[3gn4]], [[Resolution|resolution]] 2.70&Aring;' scene=''>
+== Structural highlights ==
+<table><tr><td colspan='2'>[[3gn4]] is a 6 chain structure with sequence from [http://en.wikipedia.org/wiki/Drosophila_melanogaster Drosophila melanogaster] and [http://en.wikipedia.org/wiki/Sus_scrofa Sus scrofa]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3GN4 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3GN4 FirstGlance]. <br>
+</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene><br>
+<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">MYO6 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9823 Sus scrofa]), Cam, CG8472 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=7227 Drosophila melanogaster])</td></tr>
+<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3gn4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3gn4 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3gn4 RCSB], [http://www.ebi.ac.uk/pdbsum/3gn4 PDBsum]</span></td></tr>
+<table>
+== 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/gn/3gn4_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/chain_selection.php?pdb_ID=2ata ConSurf].
+<div style="clear:both"></div>
+<div style="background-color:#fffaf0;">
+== Publication Abstract from PubMed ==
+Myosin VI challenges the prevailing theory of how myosin motors move on actin: the lever arm hypothesis. While the reverse directionality and large powerstroke of myosin VI can be attributed to unusual properties of a subdomain of the motor (converter with a unique insert), these adaptations cannot account for the large step size on actin. Either the lever arm hypothesis needs modification, or myosin VI has some unique form of extension of its lever arm. We determined the structure of the region immediately distal to the lever arm of the motor and show that it is a three-helix bundle. Based on C-terminal truncations that display the normal range of step sizes on actin, CD, fluorescence studies, and a partial deletion of the bundle, we demonstrate that this bundle unfolds upon dimerization of two myosin VI monomers. This unconventional mechanism generates an extension of the lever arm of myosin VI.
-{{STRUCTURE_3gn4|  PDB=3gn4  |  SCENE=  }}
+Myosin VI dimerization triggers an unfolding of a three-helix bundle in order to extend its reach.,Mukherjea M, Llinas P, Kim H, Travaglia M, Safer D, Menetrey J, Franzini-Armstrong C, Selvin PR, Houdusse A, Sweeney HL Mol Cell. 2009 Aug 14;35(3):305-15. Epub 2009 Aug 6. PMID:19664948<ref>PMID:19664948</ref>
-===Myosin lever arm===
+From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
+</div>
-{{ABSTRACT_PUBMED_19664948}}
-==About this Structure==
-[[3gn4]] is a 6 chain structure with sequence from [http://en.wikipedia.org/wiki/Drosophila_melanogaster Drosophila melanogaster] and [http://en.wikipedia.org/wiki/Sus_scrofa Sus scrofa]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3GN4 OCA].
 ==See Also==
 *[[Calmodulin|Calmodulin]]
 *[[Myosin|Myosin]]
+== References ==
-==Reference==
+<references/>
-<ref group="xtra">PMID:019664948</ref><references group="xtra"/>
+__TOC__
+</StructureSection>
 [[Category: Drosophila melanogaster]]
 [[Category: Sus scrofa]]