3edq

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[[Image:3edq.png|left|200px]]
 
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{{STRUCTURE_3edq| PDB=3edq | SCENE= }}
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==Crystal structure of Caspase-3 with inhibitor AC-LDESD-CHO==
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<StructureSection load='3edq' size='340' side='right'caption='[[3edq]], [[Resolution|resolution]] 1.61&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[3edq]] is a 6 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=3EDQ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3EDQ FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.61&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACE:ACETYL+GROUP'>ACE</scene>, <scene name='pdbligand=ASA:ASPARTIC+ALDEHYDE'>ASA</scene></td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3edq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3edq OCA], [https://pdbe.org/3edq PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3edq RCSB], [https://www.ebi.ac.uk/pdbsum/3edq PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3edq ProSAT]</span></td></tr>
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</table>
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== Function ==
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[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>
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ed/3edq_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</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=3edq ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Caspase-3, -6 and -7 cleave many proteins at specific sites to induce apoptosis. Their recognition of the P5 position in substrates has been investigated by kinetics, modeling and crystallography. Caspase-3 and -6 recognize P5 in pentapeptides as shown by enzyme activity data and interactions observed in the crystal structure of caspase-3/LDESD and in a model for caspase-6. In caspase-3 the P5 main-chain was anchored by interactions with Ser209 in loop-3 and the P5 Leu side-chain interacted with Phe250 and Phe252 in loop-4 consistent with 50% increased hydrolysis of LDEVD relative to DEVD. Caspase-6 formed similar interactions and showed a preference for polar P5 in QDEVD likely due to interactions with polar Lys265 and hydrophobic Phe263 in loop-4. Caspase-7 exhibited no preference for P5 residue in agreement with the absence of P5 interactions in the caspase-7/LDESD crystal structure. Initiator caspase-8, with Pro in the P5-anchoring position and no loop-4, had only 20% activity on tested pentapeptides relative to DEVD. Therefore, caspases-3 and -6 bind P5 using critical loop-3 anchoring Ser/Thr and loop-4 side-chain interactions, while caspase-7 and -8 lack P5-binding residues.
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===Crystal structure of Caspase-3 with inhibitor AC-LDESD-CHO===
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Structural basis for executioner caspase recognition of P5 position in substrates.,Fu G, Chumanevich AA, Agniswamy J, Fang B, Harrison RW, Weber IT Apoptosis. 2008 Nov;13(11):1291-302. PMID:18780184<ref>PMID:18780184</ref>
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{{ABSTRACT_PUBMED_18780184}}
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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==About this Structure==
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<div class="pdbe-citations 3edq" style="background-color:#fffaf0;"></div>
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[[3edq]] is a 6 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=3EDQ OCA].
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==See Also==
==See Also==
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*[[Caspase|Caspase]]
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*[[Caspase 3D structures|Caspase 3D structures]]
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== References ==
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==Reference==
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<references/>
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<ref group="xtra">PMID:018780184</ref><references group="xtra"/>
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__TOC__
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[[Category: Caspase-3]]
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</StructureSection>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
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[[Category: Fu, G.]]
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[[Category: Large Structures]]
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[[Category: Apoptosis]]
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[[Category: Fu G]]
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[[Category: Cysteine protease]]
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[[Category: Enzyme catalysis]]
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[[Category: Hydrolase-hydrolase inhibitor complex]]
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[[Category: S-nitrosylation]]
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[[Category: Thiol protease]]
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Current revision

Crystal structure of Caspase-3 with inhibitor AC-LDESD-CHO

PDB ID 3edq

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