4kek

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===Crystal structure of mouse Ryanodine Receptor 2 (1-217) disease mutant R176Q===
===Crystal structure of mouse Ryanodine Receptor 2 (1-217) disease mutant R176Q===
{{ABSTRACT_PUBMED_23978697}}
{{ABSTRACT_PUBMED_23978697}}
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==Function==
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[[http://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>
==About this Structure==
==About this Structure==

Revision as of 05:02, 23 October 2013

Template:STRUCTURE 4kek

Contents

Crystal structure of mouse Ryanodine Receptor 2 (1-217) disease mutant R176Q

Template:ABSTRACT PUBMED 23978697

Function

[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.[1] [2] [3] [4]

About this Structure

4kek is a 1 chain structure with sequence from Mus musculus. Full crystallographic information is available from OCA.

Reference

  • Amador FJ, Kimlicka L, Stathopulos PB, Gasmi-Seabrook GM, Maclennan DH, Van Petegem F, Ikura M. Type 2 Ryanodine Receptor Domain A Contains a Unique and Dynamic alpha-Helix That Transitions to a beta-Strand in a Mutant Linked with a Heritable Cardiomyopathy. J Mol Biol. 2013 Aug 23. pii: S0022-2836(13)00535-4. doi:, 10.1016/j.jmb.2013.08.015. PMID:23978697 doi:10.1016/j.jmb.2013.08.015
  1. ↑ Zhao M, Li P, Li X, Zhang L, Winkfein RJ, Chen SR. Molecular identification of the ryanodine receptor pore-forming segment. J Biol Chem. 1999 Sep 10;274(37):25971-4. PMID:10473538
  2. ↑ Takeshima H, Komazaki S, Hirose K, Nishi M, Noda T, Iino M. Embryonic lethality and abnormal cardiac myocytes in mice lacking ryanodine receptor type 2. EMBO J. 1998 Jun 15;17(12):3309-16. PMID:9628868 doi:10.1093/emboj/17.12.3309
  3. ↑ van Oort RJ, McCauley MD, Dixit SS, Pereira L, Yang Y, Respress JL, Wang Q, De Almeida AC, Skapura DG, Anderson ME, Bers DM, Wehrens XH. Ryanodine receptor phosphorylation by calcium/calmodulin-dependent protein kinase II promotes life-threatening ventricular arrhythmias in mice with heart failure. Circulation. 2010 Dec 21;122(25):2669-79. doi: 10.1161/CIRCULATIONAHA.110.982298., Epub 2010 Nov 15. PMID:21098440 doi:10.1161/CIRCULATIONAHA.110.982298
  4. ↑ Guo T, Cornea RL, Huke S, Camors E, Yang Y, Picht E, Fruen BR, Bers DM. Kinetics of FKBP12.6 binding to ryanodine receptors in permeabilized cardiac myocytes and effects on Ca sparks. Circ Res. 2010 Jun 11;106(11):1743-52. doi: 10.1161/CIRCRESAHA.110.219816. Epub, 2010 Apr 29. PMID:20431056 doi:10.1161/CIRCRESAHA.110.219816

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