2dko
From Proteopedia
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(New page: 200px<br /> <applet load="2dko" size="450" color="white" frame="true" align="right" spinBox="true" caption="2dko, resolution 1.06Å" /> '''Extended substrate ...) |
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| - | [[Image:2dko.gif|left|200px]]<br /> | ||
| - | <applet load="2dko" size="450" color="white" frame="true" align="right" spinBox="true" | ||
| - | caption="2dko, resolution 1.06Å" /> | ||
| - | '''Extended substrate recognition in caspase-3 revealed by high resolution X-ray structure analysis'''<br /> | ||
| - | == | + | ==Extended substrate recognition in caspase-3 revealed by high resolution X-ray structure analysis== |
| - | Caspases are cysteine proteases involved in the signalling cascades of | + | <StructureSection load='2dko' size='340' side='right'caption='[[2dko]], [[Resolution|resolution]] 1.06Å' scene=''> |
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[2dko]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2DKO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2DKO FirstGlance]. <br> | ||
| + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.06Å</td></tr> | ||
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=0QE:CHLOROMETHANE'>0QE</scene>, <scene name='pdbligand=PHQ:BENZYL+CHLOROCARBONATE'>PHQ</scene></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=2dko FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2dko OCA], [https://pdbe.org/2dko PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2dko RCSB], [https://www.ebi.ac.uk/pdbsum/2dko PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2dko ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | == Function == | ||
| + | [https://www.uniprot.org/uniprot/CASP3_HUMAN CASP3_HUMAN] Involved in the activation cascade of caspases responsible for apoptosis execution. At the onset of apoptosis it proteolytically cleaves poly(ADP-ribose) polymerase (PARP) at a '216-Asp-|-Gly-217' bond. Cleaves and activates sterol regulatory element binding proteins (SREBPs) between the basic helix-loop-helix leucine zipper domain and the membrane attachment domain. Cleaves and activates caspase-6, -7 and -9. Involved in the cleavage of huntingtin. Triggers cell adhesion in sympathetic neurons through RET cleavage.<ref>PMID:7596430</ref> <ref>PMID:21357690</ref> | ||
| + | == 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/dk/2dko_consurf.spt"</scriptWhenChecked> | ||
| + | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.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=2dko 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> | |
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| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | + | </div> | |
| - | + | <div class="pdbe-citations 2dko" style="background-color:#fffaf0;"></div> | |
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| - | + | ==See Also== | |
| + | *[[Caspase 3D structures|Caspase 3D structures]] | ||
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
| + | [[Category: Homo sapiens]] | ||
| + | [[Category: Large Structures]] | ||
| + | [[Category: Ganesan R]] | ||
| + | [[Category: Grutter MG]] | ||
| + | [[Category: Jelakovic S]] | ||
| + | [[Category: Mittl PRE]] | ||
Current revision
Extended substrate recognition in caspase-3 revealed by high resolution X-ray structure analysis
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