脉冲激光对细菌视紫红质的瞬态光电荷转移动力学研究  

Study on Dynamics of Instantaneous Photocharge Transfering in Bacteriorhodopsin by Using Dye pulse Laser

作　　者：杨群[1] 赵有源[1] 龚勤敢[1] 李富铭[1] 刘坚[2] 李庆国[2] 

机构地区：[1]复旦大学物理系三束材料改性国家重点实验室,上海200433 [2]复旦大学生物与生物物理学系,上海200433

出　　处：《激光生物学报》1999年第4期256-260,共5页Acta Laser Biology Sinica

基　　金：国家自然科学基金!(编号:1983030;39730150)

摘　　要：细菌视紫红质（ＢＲ）是一种可进行光能存储与转换的蛋白质分子，在光作用下，能极快地产生电荷分离与电光响应信号。实验采用自制的波长可调的染料激光，在μｓ－ ｍ ｓ时域内对ＢＲ的动态光电响应信号进行了研究，总结了当激发脉冲光波长改变或强度改变时光电压变化的规律，并定性地分析了ＢＲ产生上述现象的机理。Becteriorhodopsin(BR) is a kind of protein molecule which can store up and convert photoenergy.On light illuminates,BR film can generate a rapid charge separation and photonelectric response signals.Its kinetic photonelectric response was studied within μ s-ms range,using dye pulse laser,the home-made experimental system.The law of the photonelectric response singnals changing and the mechanism of light-driven proton pump were sumed up.

关 键 词：细菌视紫红质 光电压信号 光泵质子 脉冲激光 

分 类 号：Q631[生物学—生物物理学]