A look at arginine in membranes.

A look at arginine in membranes.
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DOI:
10.1007/s00232-010-9323-9
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发表时间:
2011-01
影响因子:
2.4
通讯作者:
Wimley, William C.
Wimley, William C.
中科院分区:
生物学4区
文献类型:
--
作者:
Hristova, Kalina;Wimley, William C.

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在这里,我们回顾了目前的知识精氨酸插入到双层烃核心的能量,我们讨论的插入过程的实验和计算研究之间的差异。虽然模拟表明,将精氨酸放入碳氢化合物核心的成本应该非常高,但实验表明,精氨酸在那里被发现。这两种类型的研究表明,精氨酸插入到双层涉及大量的双层变形,与精氨酸胍基团和脂质极性基团之间的多个氢键。这是可能的,关于精氨酸的插入成本的差异出现,因为模拟高估了与双层变形相关的成本,并低估了双层的能力,以适应带电和极性基团。这是一个活跃的研究领域,毫无疑问,精氨酸在膜中的共识将很快出现。
Here, we review the current knowledge about the energetics of arginine insertion into the bilayer hydrocarbon core, and we discuss discrepancies between experimental and computational studies of the insertion process. While simulations suggest that it should be very costly to place arginine into the hydrocarbon core, experiments show that arginine is found there. Both types of studies suggest that arginine insertion into the bilayer involves substantial bilayer deformation, with multiple hydrogen bonds between the arginine guanidinium group and lipid polar groups. It is possible that the discrepancies concerning the insertion cost of arginine arise because simulations overestimate the cost associated with bilayer deformation and underestimate the ability of the bilayer to adapt to charged and polar groups. This is an active area of research, and there is no doubt that a consensus view of arginine in membranes will soon emerge.
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