Membrane-binding mechanism of a peripheral membrane protein through microsecond molecular dynamics simulations.
Membrane-binding mechanism of a peripheral membrane protein through microsecond molecular dynamics simulations.
复制标题
通过微秒分子动力学模拟外周膜蛋白的膜结合机制。
DOI：
10.1016/j.jmb.2012.08.015
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发表时间：
2012
影响因子：
5.6
通讯作者：
Klauda,JefferyB
中科院分区：
文献类型：
--
作者：
Rogaski,Brent;Klauda,JefferyB
A homologue oxysterol binding protein of yeast (Osh4) peripherally binds to organelle and plasma membranes and promotes lipid transport and membrane contact. Extensive molecular dynamics simulations of Osh4 are used to characterize the structure and mechanism of protein attachment to various model lipid membranes. A high density of negatively charged lipids (phosphatidylserine and phosphatidylinositol-4,5-biphosphate) or a low density of phosphatidylinositol‐4,5‐biphosphate results in a single binding conformation consisting of interactions with several loops and a portion of the mouth to the lipid binding pocket. However, Osh4 weakly and transiently binds to membranes with only zwitterionic lipids. The protein conformation in our simulations with anionic membranes agrees with previous experiments but offers an alternative description to previously proposed distinct binding regions. Specifically, distinct binding sites on Osh4 also constitute a single binding conformation with anionic membranes. Several loops interact strongly with membranes with the strongest being the β14–β15 loop (amino acids 253–264), but this loop binds in a nonspecific manner to any anionic lipid. We are the first to characterize the importance of an anchor in the phenylalanine loop (amino acids 236–244) to binding, which stabilizes distant interactions with the mouth and may be important in stabilizing mouth interactions for lipid release or uptake to or from membranes.
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影响因子：
3.4
作者：
Ohkubo, Y. Zenmei;Pogorelov, Taras V.;Tajkhorshid, Emad
通讯作者：
Tajkhorshid, Emad
甾醇与酵母 Osh4 蛋白的结合和膜脂附着。
影响因子：
3.3
作者：
B. Rogaski;Joseph B. Lim;Jeffery B. Klauda
通讯作者：
Jeffery B. Klauda
影响因子：
3.3
作者：
Christopher T. Beh;L. G. Cool;John Phillips;J. Rine
通讯作者：
Christopher T. Beh;L. G. Cool;John Phillips;J. Rine
影响因子：
2.9
作者：
Baumann, NA;Sullivan, DP;Menon, AK
通讯作者：
Menon, AK
SGTx1 是一种 Kv 通道门控修饰毒素，与脂质双层的界面区域结合。
影响因子：
3.4
作者：
C. L. Wee;D. Bemporad;Z. Sands;D. Gavaghan;M. Sansom
通讯作者：
M. Sansom