3jbt: Difference between revisions
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New page: '''Unreleased structure''' The entry 3jbt is ON HOLD Authors: Zhou, M., Li, Y., Hu, Q., Bai, X., Huang, W., Yan, C., Scheres, S.H.W., Shi, Y. Description: Atomic structure of the Apaf-... |
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==Atomic structure of the Apaf-1 apoptosome== | |||
<SX load='3jbt' size='340' side='right' viewer='molstar' caption='[[3jbt]], [[Resolution|resolution]] 3.80Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[3jbt]] is a 14 chain structure with sequence from [https://en.wikipedia.org/wiki/Equus_caballus Equus caballus] and [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3JBT OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3JBT FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 3.8Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=DTP:2-DEOXYADENOSINE+5-TRIPHOSPHATE'>DTP</scene>, <scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</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=3jbt FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3jbt OCA], [https://pdbe.org/3jbt PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3jbt RCSB], [https://www.ebi.ac.uk/pdbsum/3jbt PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3jbt ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/APAF_HUMAN APAF_HUMAN] Oligomeric Apaf-1 mediates the cytochrome c-dependent autocatalytic activation of pro-caspase-9 (Apaf-3), leading to the activation of caspase-3 and apoptosis. This activation requires ATP. Isoform 6 is less effective in inducing apoptosis.<ref>PMID:10393175</ref> <ref>PMID:12804598</ref> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
The apoptotic protease-activating factor 1 (Apaf-1) controls the onset of many known forms of intrinsic apoptosis in mammals. Apaf-1 exists in normal cells as an autoinhibited monomer. Upon binding to cytochrome c and dATP, Apaf-1 oligomerizes into a heptameric complex known as the apoptosome, which recruits and activates cell-killing caspases. Here we present an atomic structure of an intact mammalian apoptosome at 3.8 A resolution, determined by single-particle, cryo-electron microscopy (cryo-EM). Structural analysis, together with structure-guided biochemical characterization, uncovered how cytochrome c releases the autoinhibition of Apaf-1 through specific interactions with the WD40 repeats. Structural comparison with autoinhibited Apaf-1 revealed how dATP binding triggers a set of conformational changes that results in the formation of the apoptosome. Together, these results constitute the molecular mechanism of cytochrome c- and dATP-mediated activation of Apaf-1. | |||
Atomic structure of the apoptosome: mechanism of cytochrome c- and dATP-mediated activation of Apaf-1.,Zhou M, Li Y, Hu Q, Bai XC, Huang W, Yan C, Scheres SH, Shi Y Genes Dev. 2015 Nov 15;29(22):2349-61. doi: 10.1101/gad.272278.115. Epub 2015 Nov, 5. PMID:26543158<ref>PMID:26543158</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
[[Category: | </div> | ||
[[Category: | <div class="pdbe-citations 3jbt" style="background-color:#fffaf0;"></div> | ||
[[Category: Hu | |||
[[Category: | ==See Also== | ||
[[Category: Li | *[[Apoptotic protease-activating factor-1 3D structures|Apoptotic protease-activating factor-1 3D structures]] | ||
[[Category: | == References == | ||
[[Category: | <references/> | ||
[[Category: | __TOC__ | ||
[[Category: | </SX> | ||
[[Category: Equus caballus]] | |||
[[Category: Homo sapiens]] | |||
[[Category: Large Structures]] | |||
[[Category: Bai X]] | |||
[[Category: Hu Q]] | |||
[[Category: Huang W]] | |||
[[Category: Li Y]] | |||
[[Category: Scheres SHW]] | |||
[[Category: Shi Y]] | |||
[[Category: Yan C]] | |||
[[Category: Zhou M]] | |||
Latest revision as of 01:58, 21 November 2024
Atomic structure of the Apaf-1 apoptosome
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