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正构烷烃对含孔膜中电导的阻断作用。

The blockage of the electrical conductance in a pore-containing membrane by the n-alkanes.

作者信息

Hendry B M, Urban B W, Haydon D A

出版信息

Biochim Biophys Acta. 1978 Oct 19;513(1):106-16. doi: 10.1016/0005-2736(78)90116-5.

DOI:10.1016/0005-2736(78)90116-5
PMID:82449
Abstract
  1. In monooelein bilayers made highly conducting by the addition of a fixed amount of o-pyromellitylgramicidin, the membrane conductance has been shown to be strongly dependent on the chain length of the n-alkane with which the membrane is in equilibrium. Thus for n-hexadecane, the conductance is larger by approx. 10(4) times than it is for n-octane. This result is independent of whether the polypeptide is introduced via the aqueous or lipid phases. 2. The observed conductance variations have been accounted for in terms of a mechanism (outlined in earlier publications) which is based on the thickness and tension changes produced in bilayers by the adsorption of n-alkanes. Essentially quantitative agreement between theory and experiment is found.
摘要
  1. 在通过添加固定量的邻苯二甲酰亚胺短杆菌肽而具有高导电性的单油酸甘油酯双层膜中,已表明膜电导强烈依赖于与膜处于平衡状态的正构烷烃的链长。因此,对于正十六烷,电导率比正辛烷大约大10⁴倍。该结果与多肽是通过水相还是脂质相引入无关。2. 观察到的电导变化已根据一种机制(在早期出版物中概述)进行了解释,该机制基于正构烷烃吸附在双层膜中产生的厚度和张力变化。理论与实验之间发现了基本的定量一致性。

相似文献

1
The blockage of the electrical conductance in a pore-containing membrane by the n-alkanes.正构烷烃对含孔膜中电导的阻断作用。
Biochim Biophys Acta. 1978 Oct 19;513(1):106-16. doi: 10.1016/0005-2736(78)90116-5.
2
Formation of ion channels by a negatively charged analog of gramicidin A.短杆菌肽A的带负电荷类似物形成离子通道。
J Membr Biol. 1977 Feb 24;31(1-2):171-88. doi: 10.1007/BF01869403.
3
Evaluation of surface tension and ion occupancy effects on gramicidin A channel lifetime.短杆菌肽A通道寿命的表面张力和离子占据效应评估。
Biophys J. 1988 Apr;53(4):541-8. doi: 10.1016/S0006-3495(88)83134-5.
4
Effects of surface charge on the conductance of the gramicidin channel.表面电荷对短杆菌肽通道电导的影响。
Biochim Biophys Acta. 1979 Apr 19;552(3):369-78. doi: 10.1016/0005-2736(79)90181-0.
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Proton conduction in gramicidin A and in its dioxolane-linked dimer in different lipid bilayers.短杆菌肽A及其二氧戊环连接的二聚体在不同脂质双层中的质子传导。
Biophys J. 1997 Nov;73(5):2489-502. doi: 10.1016/S0006-3495(97)78277-8.
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Sterol specific inactivation of gramicidin A induced membrane cation permeability.
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Ultraviolet flash photolysis of gramicidin-doped lipid bilayers.短杆菌肽掺杂脂质双层的紫外闪光光解
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Open channel noise. V. Fluctuating barriers to ion entry in gramicidin A channels.开放通道噪声。V. 短杆菌肽A通道中离子进入的波动屏障。
Biophys J. 1990 Mar;57(3):499-514. doi: 10.1016/S0006-3495(90)82566-2.
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[Effect of bilayer lipid membrane thickness, composition, and tension on gramicidin channel parameters].[双层脂质膜厚度、组成及张力对短杆菌肽通道参数的影响]
Biofizika. 1980 Sep-Oct;25(5):857-8.
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Attenuation of proton currents by methanol in a dioxolane-linked gramicidin A channel in different lipid bilayers.甲醇对不同脂质双层中由二氧戊环连接的短杆菌肽A通道内质子电流的衰减作用
Biophys J. 1998 Dec;75(6):2811-20. doi: 10.1016/S0006-3495(98)77724-0.

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