Modeling of full-length Piezo1 suggests importance of the proximal N-terminus for dome structure.
Modeling of full-length Piezo1 suggests importance of the proximal N-terminus for dome structure.
复制标题
DOI:
10.1016/j.bpj.2021.02.003
复制
发表时间:
2021-04-20
影响因子:
3.4
通讯作者:
Kalli AC
中科院分区:
文献类型:
--
作者:
Chong J;De Vecchis D;Hyman AJ;Povstyan OV;Ludlow MJ;Shi J;Beech DJ;Kalli AC
Piezo1 forms a mechanically activated calcium-permeable nonselective cation channel that is functionally important in many cell types. Structural data exist for C-terminal regions, but we lack information about N-terminal regions and how the entire channel interacts with the lipid bilayer. Here, we use computational approaches to predict the three-dimensional structure of the full-length Piezo1 and simulate it in an asymmetric membrane. A number of novel insights are suggested by the model: 1) Piezo1 creates a trilobed dome in the membrane that extends beyond the radius of the protein, 2) Piezo1 changes the lipid environment in its vicinity via preferential interactions with cholesterol and phosphatidylinositol 4,5-bisphosphate (PIP2) molecules, and 3) cholesterol changes the depth of the dome and PIP2 binding preference. In vitro alteration of cholesterol concentration inhibits Piezo1 activity in a manner complementing some of our computational findings. The data suggest the importance of N-terminal regions of Piezo1 for dome structure and membrane cholesterol and PIP2 interactions.
登录
查看更多内容
影响因子:
16.6
作者:
Coste, Bertrand;Murthy, Swetha E.;Mathur, Jayanti;Schmidt, Manuela;Mechioukhi, Yasmine;Delmas, Patrick;Patapoutian, Ardem
通讯作者:
Patapoutian, Ardem
影响因子:
16.6
作者:
Cox CD;Bae C;Ziegler L;Hartley S;Nikolova-Krstevski V;Rohde PR;Ng CA;Sachs F;Gottlieb PA;Martinac B
通讯作者:
Martinac B
影响因子:
11.8
作者:
Chang-Ileto, Belle;Frere, Samuel G.;Chan, Robin B.;Voronov, Sergey V.;Roux, Aurelian;Di Paolo, Gilbert
通讯作者:
Di Paolo, Gilbert
影响因子:
18.2
作者:
Corradi, Valentina;Mendez-Villuendas, Eduardo;Tieleman, D. Peter
通讯作者:
Tieleman, D. Peter
影响因子:
14.9
作者:
Buchan, Daniel W. A.;Jones, David T.
通讯作者:
Jones, David T.