STIM Proteins and Regulation of SOCE in ER-PM Junctions.

STIM Proteins and Regulation of SOCE in ER-PM Junctions.
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DOI:
10.3390/biom12081152
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发表时间:
2022-08-20
期刊:
影响因子:
5.5
通讯作者:
--
中科院分区:
生物学2区
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--
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内质网-质膜连接是内质网与质膜紧密结合形成的膜接触部位。这些连接的形成和稳定性取决于蛋白质的组成性和动态富集,其有助于连接稳定性或调节ER和质膜的脂质水平。ER-PM连接最近受到了广泛的关注,因为它们作为组装Ca 2+信号复合物的枢纽。本审查总结了:(1)STIM蛋白在ER-PM连接中积累能力的关键发现;(2)同一连接中发现的其他组分对奥赖/STIM复合物的调节;(3)Orai 1通道激活如何与下游信号通路协调和耦合。
ER-PM junctions are membrane contact sites formed by the endoplasmic reticulum (ER) and plasma membrane (PM) in close apposition together. The formation and stability of these junctions are dependent on constitutive and dynamic enrichment of proteins, which either contribute to junctional stability or modulate the lipid levels of both ER and plasma membranes. The ER-PM junctions have come under much scrutiny recently as they serve as hubs for assembling the Ca2+ signaling complexes. This review summarizes: (1) key findings that underlie the abilities of STIM proteins to accumulate in ER-PM junctions; (2) the modulation of Orai/STIM complexes by other components found within the same junction; and (3) how Orai1 channel activation is coordinated and coupled with downstream signaling pathways.
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