4p9l: Difference between revisions
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The | ==Crystal Structure of mouse Ryanodine Receptor 2 SPRY2 Domain (1080-1253) disease mutant A1107M== | ||
<StructureSection load='4p9l' size='340' side='right'caption='[[4p9l]], [[Resolution|resolution]] 1.44Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[4p9l]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4P9L OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4P9L 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]] 1.4361Å</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=4p9l FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4p9l OCA], [https://pdbe.org/4p9l PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4p9l RCSB], [https://www.ebi.ac.uk/pdbsum/4p9l PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4p9l ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/RYR2_MOUSE RYR2_MOUSE] Calcium channel that mediates the release of Ca(2+) from the sarcoplasmic reticulum into the cytoplasm and thereby plays a key role in triggering cardiac muscle contraction. Aberrant channel activation can lead to cardiac arrhythmia. In cardiac myocytes, calcium release is triggered by increased Ca(2+) levels due to activation of the L-type calcium channel CACNA1C. The calcium channel activity is modulated by formation of heterotetramers with RYR3. Required for cellular calcium ion homeostasis. Required for embryonic heart development.<ref>PMID:10473538</ref> <ref>PMID:9628868</ref> <ref>PMID:21098440</ref> <ref>PMID:20431056</ref> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Ryanodine receptors (RyRs) form channels responsible for the release of Ca(2+) from the endoplasmic and sarcoplasmic reticulum. The SPRY2 domain in the skeletal muscle isoform (RyR1) has been proposed as a direct link with L-type calcium channels (CaV1.1), allowing for direct mechanical coupling between plasma membrane depolarization and Ca(2+) release. Here we present the crystal structures of the SPRY2 domain from RyR1 and RyR2 at 1.34-1.84 A resolution. They form two antiparallel beta sheets establishing a core, and four additional modules of which several are required for proper folding. A buried disease mutation, linked to hypertrophic cardiomyopathy and loss-of-function, induces local misfolding and strong destabilization. Isothermal titration calorimetry experiments negate the RyR1 SPRY2 domain as the major link with CaV1.1. Instead, docking into full-length RyR1 cryo-electron microscopy maps suggests that the SPRY2 domain forms a link between the N-terminal gating ring and the clamp region. | |||
Crystal structures of wild type and disease mutant forms of the ryanodine receptor SPRY2 domain.,Lau K, Van Petegem F Nat Commun. 2014 Nov 5;5:5397. doi: 10.1038/ncomms6397. PMID:25370123<ref>PMID:25370123</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 4p9l" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Ryanodine receptor 3D structures|Ryanodine receptor 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Large Structures]] | |||
[[Category: Mus musculus]] | |||
[[Category: Lau K]] | |||
[[Category: Van Petegem F]] | |||
Latest revision as of 00:41, 28 December 2023
Crystal Structure of mouse Ryanodine Receptor 2 SPRY2 Domain (1080-1253) disease mutant A1107M
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