Cytosolic Ca2+ prevents the subplasmalemmal clustering of STIM1: an intrinsic mechanism to avoid Ca2+ overload.
Cytosolic Ca2+ prevents the subplasmalemmal clustering of STIM1: an intrinsic mechanism to avoid Ca2+ overload.
复制标题
DOI:
10.1242/jcs.034496
复制
发表时间:
2008-10-01
影响因子:
4
通讯作者:
Graier WF
中科院分区:
文献类型:
--
作者:
Malli R;Naghdi S;Romanin C;Graier WF
The stromal interacting molecule (STIM1) is pivotal for store-operated Ca2+ entry (SOC). STIM1 proteins sense the Ca2+ concentration within the lumen of the endoplasmic reticulum (ER) via an EF-hand domain. Dissociation of Ca2+ from this domain allows fast oligomerization of STIM1 and the formation of spatially discrete clusters close to the plasma membrane. By lifetime-imaging of STIM1 interaction, the rearrangement of STIM1, ER Ca2+ concentration ([Ca2+]ER) and cytosolic Ca2+ signals ([Ca2+]cyto) we show that [Ca2+]cyto affects the subcellular distribution of STIM1 oligomers and prevents subplasmalemmal STIM clustering, even if the ER is depleted. These data indicate that [Ca2+]cyto, independently of the ER Ca2+ filling state, crucially tunes the formation and disassembly of subplasmalemmal STIM1 clusters, and, thus, protects cells against Ca2+ overload resulting from excessive SOC activity.
登录
查看更多内容
影响因子:
4.8
作者:
Mercer, Jason C.;DeHaven, Wayne I.;Putney, James W., Jr.
通讯作者:
Putney, James W., Jr.
影响因子:
5.5
作者:
Graier, WF;Paltauf-Doburzynska, J;Sturek, M
通讯作者:
Sturek, M
影响因子:
5.5
作者:
GRAIER, WF;SIMECEK, S;STUREK, M
通讯作者:
STUREK, M
影响因子:
16.2
作者:
Chevesich, J;Kreuz, AJ;Montell, C
通讯作者:
Montell, C
影响因子:
21.3
作者:
Peinelt, Christine;Vig, Monika;Kinet, Jean-Pierre
通讯作者:
Kinet, Jean-Pierre