2a5y
From Proteopedia
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==Structure of a CED-4/CED-9 complex== | ==Structure of a CED-4/CED-9 complex== | ||
| - | <StructureSection load='2a5y' size='340' side='right' caption='[[2a5y]], [[Resolution|resolution]] 2.60Å' scene=''> | + | <StructureSection load='2a5y' size='340' side='right'caption='[[2a5y]], [[Resolution|resolution]] 2.60Å' scene=''> |
== Structural highlights == | == Structural highlights == | ||
| - | <table><tr><td colspan='2'>[[2a5y]] is a 3 chain structure with sequence from [ | + | <table><tr><td colspan='2'>[[2a5y]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Caenorhabditis_elegans Caenorhabditis elegans]. The September 2014 RCSB PDB [https://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Apoptosomes'' by David Goodsell is [https://dx.doi.org/10.2210/rcsb_pdb/mom_2014_9 10.2210/rcsb_pdb/mom_2014_9]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2A5Y OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2A5Y FirstGlance]. <br> |
| - | </td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ATP:ADENOSINE-5-TRIPHOSPHATE'>ATP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>< | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.6Å</td></tr> |
| - | <tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ATP:ADENOSINE-5-TRIPHOSPHATE'>ATP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr> |
| - | <table> | + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2a5y FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2a5y OCA], [https://pdbe.org/2a5y PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2a5y RCSB], [https://www.ebi.ac.uk/pdbsum/2a5y PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2a5y ProSAT]</span></td></tr> |
| + | </table> | ||
| + | == Function == | ||
| + | [https://www.uniprot.org/uniprot/CED9_CAEEL CED9_CAEEL] Plays a major role in programmed cell death (PCD, apoptosis). Egl-1 binds to and directly inhibits the activity of ced-9, releasing the cell death activator ced-4 from a ced-9/ced-4 containing protein complex and allowing ced-4 to activate the cell-killing caspase ced-3.<ref>PMID:7907274</ref> <ref>PMID:9024666</ref> <ref>PMID:9027313</ref> <ref>PMID:9604928</ref> <ref>PMID:10688797</ref> <ref>PMID:15383288</ref> | ||
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
Check<jmol> | Check<jmol> | ||
<jmolCheckbox> | <jmolCheckbox> | ||
| - | <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/a5/2a5y_consurf.spt"</scriptWhenChecked> | + | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/a5/2a5y_consurf.spt"</scriptWhenChecked> |
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | ||
<text>to colour the structure by Evolutionary Conservation</text> | <text>to colour the structure by Evolutionary Conservation</text> | ||
</jmolCheckbox> | </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/ | + | </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=2a5y ConSurf]. |
<div style="clear:both"></div> | <div style="clear:both"></div> | ||
| - | <div style="background-color:#fffaf0;"> | ||
| - | == Publication Abstract from PubMed == | ||
| - | Interplay among four genes--egl-1, ced-9, ced-4 and ced-3--controls the onset of programmed cell death in the nematode Caenorhabditis elegans. Activation of the cell-killing protease CED-3 requires CED-4. However, CED-4 is constitutively inhibited by CED-9 until its release by EGL-1. Here we report the crystal structure of the CED-4-CED-9 complex at 2.6 A resolution, and a complete reconstitution of the CED-3 activation pathway using homogeneous proteins of CED-4, CED-9 and EGL-1. One molecule of CED-9 binds to an asymmetric dimer of CED-4, but specifically recognizes only one of the two CED-4 molecules. This specific interaction prevents CED-4 from activating CED-3. EGL-1 binding induces pronounced conformational changes in CED-9 that result in the dissociation of the CED-4 dimer from CED-9. The released CED-4 dimer further dimerizes to form a tetramer, which facilitates the autoactivation of CED-3. Together, our studies provide important insights into the regulation of cell death activation in C. elegans. | ||
| - | |||
| - | Structure of the CED-4-CED-9 complex provides insights into programmed cell death in Caenorhabditis elegans.,Yan N, Chai J, Lee ES, Gu L, Liu Q, He J, Wu JW, Kokel D, Li H, Hao Q, Xue D, Shi Y Nature. 2005 Oct 6;437(7060):831-7. PMID:16208361<ref>PMID:16208361</ref> | ||
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| - | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| - | </div> | ||
==See Also== | ==See Also== | ||
| - | *[[Cell death protein|Cell death protein]] | + | *[[Cell death protein 3D structures|Cell death protein 3D structures]] |
== References == | == References == | ||
<references/> | <references/> | ||
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[[Category: Apoptosomes]] | [[Category: Apoptosomes]] | ||
[[Category: Caenorhabditis elegans]] | [[Category: Caenorhabditis elegans]] | ||
| + | [[Category: Large Structures]] | ||
[[Category: RCSB PDB Molecule of the Month]] | [[Category: RCSB PDB Molecule of the Month]] | ||
| - | [[Category: Gu | + | [[Category: Gu L]] |
| - | [[Category: Hao | + | [[Category: Hao Q]] |
| - | [[Category: Liu | + | [[Category: Liu Q]] |
| - | [[Category: Shi | + | [[Category: Shi Y]] |
| - | [[Category: Yan | + | [[Category: Yan N]] |
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Current revision
Structure of a CED-4/CED-9 complex
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