1df0: Difference between revisions

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-[[Image:1df0.png|left|200px]]
+==Crystal structure of M-Calpain==
+<StructureSection load='1df0' size='340' side='right' caption='[[1df0]], [[Resolution|resolution]] 2.60&Aring;' scene=''>
+== Structural highlights ==
+<table><tr><td colspan='2'>[[1df0]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1DF0 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1DF0 FirstGlance]. <br>
+</td></tr><tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1aj5|1aj5]], [[1alv|1alv]], [[1alw|1alw]], [[1dvi|1dvi]]</td></tr>
+<tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Calpain-2 Calpain-2], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.22.53 3.4.22.53] </span></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=1df0 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1df0 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1df0 RCSB], [http://www.ebi.ac.uk/pdbsum/1df0 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/df/1df0_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 ==
+The combination of thiol protease activity and calmodulin-like EF-hands is a feature unique to the calpains. The regulatory mechanisms governing calpain activity are complex, and the nature of the Ca(2+)-induced switch between inactive and active forms has remained elusive in the absence of structural information. We describe here the 2.6 A crystal structure of m-calpain in the Ca(2+)-free form, which illustrates the structural basis for the inactivity of calpain in the absence of Ca(2+). It also reveals an unusual thiol protease fold, which is associated with Ca(2+)-binding domains through heterodimerization and a C(2)-like beta-sandwich domain. Strikingly, the structure shows that the catalytic triad is not assembled, indicating that Ca(2+)-binding must induce conformational changes that re-orient the protease domains to form a functional active site. The alpha-helical N-terminal anchor of the catalytic subunit does not occupy the active site but inhibits its assembly and regulates Ca(2+)-sensitivity through association with the regulatory subunit. This Ca(2+)-dependent activation mechanism is clearly distinct from those of classical proteases.
-{{STRUCTURE_1df0|  PDB=1df0  |  SCENE=  }}
+Crystal structure of calpain reveals the structural basis for Ca(2+)-dependent protease activity and a novel mode of enzyme activation.,Hosfield CM, Elce JS, Davies PL, Jia Z EMBO J. 1999 Dec 15;18(24):6880-9. PMID:10601010<ref>PMID:10601010</ref>
-===Crystal structure of M-Calpain===
+From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
+</div>
-{{ABSTRACT_PUBMED_10601010}}
-==About this Structure==
-[[1df0]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1DF0 OCA].
 ==See Also==
 *[[Calpain|Calpain]]
+== References ==
-==Reference==
+<references/>
-<ref group="xtra">PMID:010601010</ref><references group="xtra"/>
+__TOC__
+</StructureSection>
 [[Category: Calpain-2]]
 [[Category: Rattus norvegicus]]