EVIDENCE THAT THE PHOTOELECTRIC RESPONSE OF BACTERIORHODOPSIN OCCURS IN LESS THAN 5 PICOSECONDS

被引：61

作者：

SIMMETH, R

RAYFIELD, GW

机构：

[1] Physics Department, University of Oregon, Eugene, Oregon

来源：

BIOPHYSICAL JOURNAL | 1990年 / 57卷 / 05期

关键词：

D O I：

10.1016/S0006-3495(90)82629-1

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

The initial photoinduced charge separation in bacteriorhodopsin is shown to occur in <5 ps. This result is obtained by measuring the photovoltage rise time in an oriented film of bacteriorhodopsin (BR). A dye laser syncronously pumped by an Argon ion cw mode locked laser is used to produce 3-ps light pulses which, after passing through a dye amplifier chain, photoexcite the BR sample. The photovoltage transient is detected by an ultra-fast Josephson junction digital sampling oscilloscope with liquid-helium-cooled input circuitry. © 1990, The Biophysical Society. All rights reserved.

引用

页码：1099 / 1101

页数：3