Light-induced interfacial potentials in photoreceptor membranes.

Light-induced interfacial potentials in photoreceptor membranes.
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光感受器膜中的光诱导界面电位。

DOI:
10.1016/s0006-3495(80)85092-2
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发表时间:
1980
影响因子:
3.4
通讯作者:
Hubbell,WL
Hubbell,WL
中科院分区:
生物学3区
文献类型:
--
作者:
Cafiso,DS;Hubbell,WL

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孤立牛棒外节盘膜的界面电位在光照下发生快速变化。通过使用自旋标记的疏水离子检测到的这种电位变化,显然发生在靠近外部(细胞质)表面的膜的低介电边界区域内,并且相对于磁盘的水表面是正的。电位变化的幅度与ph和温度有关,在21℃时,其一阶半衰期约为7 ms。一个简单的模型表明,每漂紫质一个正电荷从细胞质水空间转移到膜低介电边界区,这很容易解释所有的实验观察结果。边界电位变化与早期受体电位的R2期非常相似,表明两者具有相同的分子起源。
A rapid change in an interfacial electric potential of isolated bovine rod outer segment disk membranes occurs upon illumination. This potential change, which has been detected by the use of spin-labeled hydrophobic ions, apparently occurs within a low dielectric boundary region of the membrane near the external (cytoplasmic) surface and is positive with respect to the aqueous exterior of the disk. The magnitude of the potential change is pH-and temperature-dependent and appears with a first-order half-time of approximately 7 ms at 21 degrees C. A simple model in which one positive charge per bleached rhodopsin is translocated from the cytoplasmic aqueous space into the membrane low dielectric boundary region readily accounts for all experimental observations. The great similarity of the boundary potential change to the R2 phase of the early receptor potential suggests that the two have the same molecular origin.
视觉受体膜中阳离子依赖性光诱导的结构变化。
DOI: 10.1016/0006-291x(73)91201-1
发表时间: 1973
影响因子: 3.1
作者:
Surendra P. Verma;Lawrence J. Berliner;Ian C.P. Smith
通讯作者: Ian C.P. Smith
DOI: 10.1007/978-3-642-85769-0_6
发表时间: 1973
影响因子: 3.4
作者:
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通讯作者: E. W. Abrahamson
模型膜中的视紫红质:界面层中的电荷位移。
DOI: 10.1073/pnas.74.1.207
发表时间: 1977
影响因子: 11.1
作者:
H. Trissl;A. Darszon;M. Montal
通讯作者: M. Montal
牛视紫红质光解中间过程的动力学-II 从lumirhodopsin497到metarhodopsin380 II的中间衰变序列。
DOI: --
发表时间: 1979
期刊: Vision Research
影响因子: 1.8
作者:
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通讯作者: J. Rapp
DOI: 10.1016/0021-9797(77)90158-8
发表时间: 1977-01-01
影响因子: 9.9
作者:
HONG, FT
通讯作者: HONG, FT