Structural basis for activation of plasma-membrane Ca2+-ATPase by calmodulin
Structural basis for activation of plasma-membrane Ca2+-ATPase by calmodulin
复制标题
钙调蛋白激活质膜 Ca2-ATP 酶的结构基础
DOI:
10.1038/s42003-018-0203-7
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发表时间:
2018
影响因子:
5.9
通讯作者:
Uetrecht
中科院分区:
文献类型:
--
作者:
Nitsche;Heidemann;Mertens;Moulin;Haertlein;Forsyth;Svergun;Uetrecht
Plasma-membrane Ca2+-ATPases expel Ca2+from the cytoplasm and are key regulators of Ca2+homeostasis in eukaryotes. They are autoinhibited under low Ca2+concentrations. Calmodulin (CaM)-binding to a unique regulatory domain releases the autoinhibition and activates the pump. However, the structural basis for this activation, including the overall structure of this calcium pump and its complex with calmodulin, is unknown. We previously determined the high-resolution structure of calmodulin in complex with the regulatory domain of the plasma-membrane Ca2+-ATPase ACA8 and revealed a bimodular mechanism of calcium control in eukaryotes. Here we show that activation of ACA8 by CaM involves large conformational changes. Combining advanced modeling of neutron scattering data acquired from stealth nanodiscs and native mass spectrometry with detailed dissection of binding constants, we present a structural model for the full-length ACA8 Ca2+pump in its calmodulin-activated state illustrating a displacement of the regulatory domain from the core enzyme.
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影响因子:
4.8
作者:
Fusca, Tiziana;Bonza, Maria Cristina;De Michelis, Maria Ida
通讯作者:
De Michelis, Maria Ida
DOI:
--
发表时间:
2014
期刊:
Acta Crystallographica Section D: Biological Crystallography
影响因子:
--
作者:
S. Maric;Nicholas Skar;S. Midtgaard;M. Thygesen;Jürgen Schiller;H. Frielinghaus;M. Moulin;M. Haertlein;V. T. Forsyth;T. Pomorski;Lise Arleth
通讯作者:
Lise Arleth
DOI:
10.1007/s00249-016-1186-2
发表时间:
2017-07
期刊:
European biophysics journal : EBJ
影响因子:
--
作者:
Dunne O;Weidenhaupt M;Callow P;Martel A;Moulin M;Perkins SJ;Haertlein M;Forsyth VT
通讯作者:
Forsyth VT
影响因子:
2.9
作者:
CHIFFLET, S;TORRIGLIA, A;TOLOSA, S
通讯作者:
TOLOSA, S
影响因子:
--
作者:
E. W. Jones
通讯作者:
E. W. Jones