机械敏感膜蛋白之间的定向相互作用和协同性
Directional interactions and cooperativity between mechanosensitive membrane proteins
摘要：
虽然现代结构生物学为我们提供了丰富多样的膜蛋白图片，膜蛋白的生物学功能往往是由周围的脂质双层的机械性能的影响。在这里，我们探索膜蛋白的形状和膜蛋白的弹性相互作用引起的膜蛋白的合作功能之间的关系。对于机械敏感离子通道的实验模型系统，我们发现，弹性相互作用的符号和强度取决于蛋白质的形状，产生不同的蛋白质取向不同的合作门控曲线。我们的方法预测了定向弹性相互作用如何影响拥挤膜中蛋白质的分子结构，组织和生物功能。
英文摘要：
While modern structural biology has provided us with a rich and diverse picture of membrane proteins, the biological function of membrane proteins is often influenced by the mechanical properties of the surrounding lipid bilayer. Here we explore the relation between the shape of membrane proteins and the cooperative function of membrane proteins induced by membrane-mediated elastic interactions. For the experimental model system of mechanosensitive ion channels we find that the sign and strength of elastic interactions depend on the protein shape, yielding distinct cooperative gating curves for distinct protein orientations. Our approach predicts how directional elastic interactions affect the molecular structure, organization, and biological function of proteins in crowded membranes.
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