Calsequestrin interacts directly with the cardiac ryanodine receptor luminal domain.
Calsequestrin interacts directly with the cardiac ryanodine receptor luminal domain.
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DOI:
10.1242/jcs.191643
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发表时间:
2016-11-01
影响因子:
4
通讯作者:
Zissimopoulos S
中科院分区:
文献类型:
--
作者:
Handhle A;Ormonde CE;Thomas NL;Bralesford C;Williams AJ;Lai FA;Zissimopoulos S
Cardiac muscle contraction requires sarcoplasmic reticulum (SR) Ca2+ release mediated by the quaternary complex comprising the ryanodine receptor 2 (RyR2), calsequestrin 2 (CSQ2), junctin (encoded by ASPH) and triadin. Here, we demonstrate that a direct interaction exists between RyR2 and CSQ2. Topologically, CSQ2 binding occurs at the first luminal loop of RyR2. Co-expression of RyR2 and CSQ2 in a human cell line devoid of the other quaternary complex proteins results in altered Ca2+-release dynamics compared to cells expressing RyR2 only. These findings provide a new perspective for understanding the SR luminal Ca2+ sensor and its involvement in cardiac physiology and disease. Summary: Direct physical and functional calsequestrin 2 association with the ryanodine receptor luminal domain is the minimal requirement to form the sarcoplasmic reticulum Ca2+ sensor, which governs cardiac Ca2+ homeostasis and reliable heartbeat.
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影响因子:
3.5
作者:
Shin, DW;Ma, JJ;Kim, DH
通讯作者:
Kim, DH
影响因子:
20.1
作者:
Priori SG;Chen SR
通讯作者:
Chen SR
影响因子:
4
作者:
Li L;Mirza S;Richardson SJ;Gallant EM;Thekkedam C;Pace SM;Zorzato F;Liu D;Beard NA;Dulhunty AF
通讯作者:
Dulhunty AF
DOI:
10.1085/jgp.201110708
发表时间:
2012-08
期刊:
The Journal of general physiology
影响因子:
--
作者:
Tencerová B;Zahradníková A;Gaburjáková J;Gaburjáková M
通讯作者:
Gaburjáková M
影响因子:
20.1
作者:
Terentyev, D;Viatchenko-Karpinski, S;Györke, S
通讯作者:
Györke, S