The structure of a calsequestrin filament reveals mechanisms of familial arrhythmia.
The structure of a calsequestrin filament reveals mechanisms of familial arrhythmia.
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DOI:
10.1038/s41594-020-0510-9
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发表时间:
2020-12
影响因子:
16.8
通讯作者:
Deo RC
中科院分区:
文献类型:
--
作者:
Titus EW;Deiter FH;Shi C;Wojciak J;Scheinman M;Jura N;Deo RC
Mutations in the calcium-binding protein calsequestrin cause the highly lethal familial arrhythmia catecholaminergic polymorphic ventricular tachycardia (CPVT). In vivo, calsequestrin multimerizes into filaments, but an atomic-resolution structure of a calsequestrin filament is lacking. We report a crystal structure of a human cardiac calsequestrin filament with supporting mutational analysis and in vitro filamentation assays. We identify and characterize a novel disease-associated calsequestrin mutation, S173I, that is located at the filament-forming interface, and further show that a previously reported dominant disease mutation, K180R, maps to the same surface. Both mutations disrupt filamentation, suggesting that disease pathology is due to defects in multimer formation. An ytterbium-derivatized structure pinpoints multiple credible calcium sites at filament-forming interfaces, explaining the atomic basis of calsequestrin filamentation in the presence of calcium. Our study thus provides a unifying molecular mechanism by which dominant-acting calsequestrin mutations provoke lethal arrhythmias.
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DOI:
10.1107/s0907444905036693
发表时间:
2006-01-01
影响因子:
2.2
作者:
Evans, P
通讯作者:
Evans, P
影响因子:
7.8
作者:
COSTELLO, B;CHADWICK, C;SAITO, A;CHU, A;MAURER, A;FLEISCHER, S
通讯作者:
FLEISCHER, S
影响因子:
4
作者:
Handhle A;Ormonde CE;Thomas NL;Bralesford C;Williams AJ;Lai FA;Zissimopoulos S
通讯作者:
Zissimopoulos S
DOI:
10.1107/s0907444909052925
发表时间:
2010-02
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Adams PD;Afonine PV;Bunkóczi G;Chen VB;Davis IW;Echols N;Headd JJ;Hung LW;Kapral GJ;Grosse-Kunstleve RW;McCoy AJ;Moriarty NW;Oeffner R;Read RJ;Richardson DC;Richardson JS;Terwilliger TC;Zwart PH
通讯作者:
Zwart PH
影响因子:
3.4
作者:
Kamp, F;Donoso, P;Hidalgo, C
通讯作者:
Hidalgo, C