4iyr: Difference between revisions
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New page: '''Unreleased structure''' The entry 4iyr is ON HOLD Authors: Cao, Q., Wang, X.J., Li, L.F., Su, X.D. Description: Crystal structure of full-length caspase-6 zymogen |
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==Crystal structure of full-length caspase-6 zymogen== | |||
<StructureSection load='4iyr' size='340' side='right'caption='[[4iyr]], [[Resolution|resolution]] 2.70Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[4iyr]] is a 2 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=4IYR OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4IYR 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]] 2.697Å</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=4iyr FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4iyr OCA], [https://pdbe.org/4iyr PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4iyr RCSB], [https://www.ebi.ac.uk/pdbsum/4iyr PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4iyr ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/CASP6_HUMAN CASP6_HUMAN] Involved in the activation cascade of caspases responsible for apoptosis execution. Cleaves poly(ADP-ribose) polymerase in vitro, as well as lamins. Overexpression promotes programmed cell death. | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Caspase 6 (CASP6) is a neuron degeneration-related protease and is widely considered to be a potential drug-design target against neurodegenerative diseases such as Huntington's disease and Alzheimer's disease. The N-terminal pro-peptide of CASP6, also referred to as the pro-domain, contains 23 residues and its functional role remains elusive. In this study, the crystal structure of a full-length CASP6 zymogen mutant, proCASP6H121A, was solved. Although the pro-domain was flexible in the crystal, without visible electron density, structural analyses combined with biochemical assays revealed that the pro-domain inhibited CASP6 auto-activation by inhibiting intramolecular cleavage at the intersubunit cleavage site TEVD(193) and also by preventing this site from intermolecular cleavage at low protein concentration through a so-called `suicide-protection' mechanism. Further experiments showed that the length of the pro-domain and the side chain of Asn18 played critical roles in suicide protection. These results disclosed a new inhibitory mechanism of CASP6 and shed light on the pathogenesis and therapeutically relevant study of CASP6-related neurodegenerative diseases. | |||
The regulatory mechanism of the caspase 6 pro-domain revealed by crystal structure and biochemical assays.,Cao Q, Wang XJ, Li LF, Su XD Acta Crystallogr D Biol Crystallogr. 2014 Jan;70(Pt 1):58-67. doi:, 10.1107/S1399004713024218. Epub 2013 Dec 24. PMID:24419379<ref>PMID:24419379</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 4iyr" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Caspase 3D structures|Caspase 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Homo sapiens]] | |||
[[Category: Large Structures]] | |||
[[Category: Cao Q]] | |||
[[Category: Li L-F]] | |||
[[Category: Su X-D]] | |||
[[Category: Wang X-J]] | |||
