细菌视紫红质对调制光的响应特性  

Properties of Bacteriorhodopsin's Response to Modulated Light

作　　者：姚保利[1] 徐大纶[1] 侯洵[1] 胡坤生[2] 王敖金[2] 

机构地区：[1]中国科学院西安光学精密机械研究所瞬态光学技术国家重点实验室,西安710068 [2]中国科学院生物物理研究所,北京100101

出　　处：《生物化学与生物物理进展》1997年第5期427-430,共4页Progress In Biochemistry and Biophysics

基　　金：瞬态光学技术国家重点实验室资助;中国科学院基础性研究九五预研基金资助项目! (YAK940 9与BJ 10 )

摘　　要：细菌视紫红质在结构上与视紫红质的相似性使其具有某些视觉响应特性 .用电泳法在不锈钢电极上沉积出定向紫膜薄膜 ,构成不锈钢 /紫膜 /凝胶 /铜电极结构的光接收器 .在调制光作用下 ,光接收器显示出对光强变化的微分响应特性 .测量了光电压随调制频率和入射光功率的变化关系 .比较和讨论了细菌视紫红质对调制光响应特性与视觉频闪及明暗感的相关性 .Because of the structural similarity to rhodopsin, bacteriorhodopsin is characterized by some visual response properties. With electrophoresis method, oriented purple membrane films are deposited on stainless steel electrode to construct a photoreceptor with the structure of stainless steel/purple membrane/gel/copper electrode. As illuminated by modulated light, the photoreceptor gives rise to a differential response. The dependencies of the photoreceptor's photovoltages on the modulating frequency and the incident light power are measured. The analogy between the bacteriorhodopsin's response to modulated light and the visual flash and brightness are compared and discussed.

关 键 词：细菌视紫红质 紫膜 生物膜 调制光 

分 类 号：Q734[生物学—分子生物学]