2cdr: Difference between revisions

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-[[Image:2cdr.png|left|200px]]
+==Crystal structures of caspase-3 in complex with aza-peptide epoxide inhibitors.==
+<StructureSection load='2cdr' size='340' side='right' caption='[[2cdr]], [[Resolution|resolution]] 1.70&Aring;' scene=''>
+== Structural highlights ==
+<table><tr><td colspan='2'>[[2cdr]] is a 3 chain structure with sequence 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=2CDR OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2CDR FirstGlance]. <br>
+</td></tr><tr><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MY1:[N-(3-DIBENZYLCARBAMOYL-OXIRANECARBONYL)-HYDRAZINO]-ACETIC+ACID'>MY1</scene>, <scene name='pdbligand=PHQ:BENZYL+CHLOROCARBONATE'>PHQ</scene></td></tr>
+<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1cp3|1cp3]], [[1gfw|1gfw]], [[1i3o|1i3o]], [[1nme|1nme]], [[1nmq|1nmq]], [[1nms|1nms]], [[1pau|1pau]], [[1qx3|1qx3]], [[1re1|1re1]], [[1rhj|1rhj]], [[1rhk|1rhk]], [[1rhm|1rhm]], [[1rhq|1rhq]], [[1rhr|1rhr]], [[1rhu|1rhu]], [[2c1e|2c1e]], [[2c2k|2c2k]], [[2c2m|2c2m]], [[2c2o|2c2o]]</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=2cdr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2cdr OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2cdr RCSB], [http://www.ebi.ac.uk/pdbsum/2cdr 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/cd/2cdr_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 ==
+Caspase-3 is a prototypic executioner caspase that plays a central role in apoptosis. Aza-peptide epoxides are a novel class of irreversible inhibitors that are highly specific for clan CD cysteine proteases. The five crystal structures of caspase-3-aza-peptide epoxide inhibitor complexes reported here reveal the structural basis for the mechanism of inhibition and the specificities at the S1' and the S4 subsites. Unlike the clan CA cysteine proteases, the catalytic histidine in caspase-3 plays a critical role during protonation and subsequent ring opening of the epoxide moiety and facilitates the nucleophilic attack by the active site cysteine. The nucleophilic attack takes place on the C3 carbon atom of the epoxide and results in an irreversible alkylation of the active site cysteine residue. A favorable network of hydrogen bonds involving the oxyanion hole, catalytic histidine, and the atoms in the prime site of the inhibitor enhance the binding affinity and specificity of the aza-peptide epoxide inhibitors toward caspase-3. The studies also reveal that subtle movements of the N-terminal loop of the beta-subunit occur when the P4 Asp is replaced by a P4 Ile, whereas the N-terminal loop and the safety catch Asp179 are completely disordered when the P4 Asp is replaced by P4 Cbz group.
-{{STRUCTURE_2cdr|  PDB=2cdr  |  SCENE=  }}
+Exploring the S4 and S1 prime subsite specificities in caspase-3 with aza-peptide epoxide inhibitors.,Ganesan R, Jelakovic S, Campbell AJ, Li ZZ, Asgian JL, Powers JC, Grutter MG Biochemistry. 2006 Aug 1;45(30):9059-67. PMID:16866351<ref>PMID:16866351</ref>
-===Crystal structures of caspase-3 in complex with aza-peptide epoxide inhibitors.===
+From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
+</div>
-{{ABSTRACT_PUBMED_16866351}}
-==About this Structure==
-[[2cdr]] is a 3 chain structure with sequence 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=2CDR OCA].
 ==See Also==
 *[[Caspase|Caspase]]
+== References ==
-==Reference==
+<references/>
-<ref group="xtra">PMID:016866351</ref><references group="xtra"/>
+__TOC__
+</StructureSection>
 [[Category: Homo sapiens]]
 [[Category: Asgian, J L.]]