Ion currents through Kir potassium channels are gated by anionic lipids
Ion currents through Kir potassium channels are gated by anionic lipids
复制标题
通过 Kir 钾通道的离子电流由阴离子脂质门控
DOI:
10.1101/2021.09.21.461288
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Jin R
中科院分区:
文献类型:
--
作者:
Jin R
Ion currents through potassium channels are gated. Constriction of the ion conduction pathway at the inner helix bundle, the textbook gate of Kir potassium channels, has been shown to be an ineffective permeation control, creating a rift in our understanding of how these channels are gated. Here we present evidence that anionic lipids act as interactive response elements sufficient to gate potassium conduction. We demonstrate the limiting barrier to K+permeation lies within the ion conduction pathway and show that this gate is operated by the fatty acyl tails of lipids that infiltrate the conduction pathway via fenestrations in the walls of the pore. Acyl tails occupying a surface groove extending from the cytosolic interface to the conduction pathway provide a potential means of relaying cellular signals, mediated by anionic lipid head groups bound at the canonical lipid binding site, to the internal gate.
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影响因子:
14.8
作者:
Lichtenegger M;Tiapko O;Svobodova B;Stockner T;Glasnov TN;Schreibmayer W;Platzer D;de la Cruz GG;Krenn S;Schober R;Shrestha N;Schindl R;Romanin C;Groschner K
通讯作者:
Groschner K
DOI:
10.1085/jgp.202012731
发表时间:
2021-02-01
期刊:
The Journal of general physiology
影响因子:
--
作者:
Winterstein LM;Kukovetz K;Hansen UP;Schroeder I;Van Etten JL;Moroni A;Thiel G;Rauh O
通讯作者:
Rauh O
DOI:
10.1073/pnas.1602815113
发表时间:
2016
影响因子:
11.1
作者:
Su,Zhenwei;Brown,EmilyC;Wang,Weiwei;MacKinnon,Roderick
通讯作者:
MacKinnon,Roderick
DOI:
--
发表时间:
1999
期刊:
The Journal of General Physiology
影响因子:
--
作者:
Z. Fan;J. Makielski
通讯作者:
J. Makielski
影响因子:
2.9
作者:
Humphrey, W;Dalke, A;Schulten, K
通讯作者:
Schulten, K