2cjx: Difference between revisions
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[[Image: | ==Extended substrate recognition in caspase-3 revealed by high resolution X-ray structure analysis== | ||
<StructureSection load='2cjx' size='340' side='right' caption='[[2cjx]], [[Resolution|resolution]] 1.70Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[2cjx]] 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=2CJX OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2CJX FirstGlance]. <br> | |||
</td></tr><tr><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=0QE:CHLOROMETHANE'>0QE</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]], [[2cdr|2cdr]], [[2cjy|2cjy]]</td></tr> | |||
<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">CASP3, CPP32 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</td></tr> | |||
<tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Caspase-3 Caspase-3], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.22.56 3.4.22.56] </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=2cjx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2cjx OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2cjx RCSB], [http://www.ebi.ac.uk/pdbsum/2cjx 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/cj/2cjx_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 == | |||
Caspases are cysteine proteases involved in the signalling cascades of programmed cell death in which caspase-3 plays a central role, since it propagates death signals from intrinsic and extrinsic stimuli to downstream targets. The atomic resolution (1.06 Angstroms) crystal structure of the caspase-3 DEVD-cmk complex reveals the structural basis for substrate selectivity in the S4 pocket. A low-barrier hydrogen bond is observed between the side-chains of the P4 inhibitor aspartic acid and Asp179 of the N-terminal tail of the symmetry related p12 subunit. Site-directed mutagenesis of Asp179 confirmed the significance of this residue in substrate recognition. In the 1.06 Angstroms crystal structure, a radiation damage induced rearrangement of the inhibitor methylketone moiety was observed. The carbon atom that in a substrate would represent the scissile peptide bond carbonyl carbon clearly shows a tetrahedral coordination and resembles the postulated tetrahedral intermediate of the acylation reaction. | |||
Extended substrate recognition in caspase-3 revealed by high resolution X-ray structure analysis.,Ganesan R, Mittl PR, Jelakovic S, Grutter MG J Mol Biol. 2006 Jun 23;359(5):1378-88. Epub 2006 May 11. PMID:16787777<ref>PMID:16787777</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
==See Also== | ==See Also== | ||
*[[Caspase|Caspase]] | *[[Caspase|Caspase]] | ||
== References == | |||
== | <references/> | ||
< | __TOC__ | ||
</StructureSection> | |||
[[Category: Caspase-3]] | [[Category: Caspase-3]] | ||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
Revision as of 03:19, 29 September 2014
Extended substrate recognition in caspase-3 revealed by high resolution X-ray structure analysis
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