An azulenic bacteriorhodopsin analog has photoinduced activity

被引：5

作者：

Druzhko, AB ^{[1
]}

Vanderah, DJ ^{[1
]}

Robertson, B ^{[1
]}

Weetall, HH ^{[1
]}

机构：

[1] NIST,DIV BIOTECHNOL,GAITHERSBURG,MD 20899

来源：

PHOTOCHEMISTRY AND PHOTOBIOLOGY | 1996年 / 64卷 / 05期

关键词：

D O I：

10.1111/j.1751-1097.1996.tb01849.x

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The photoinduced changes of absorbance as well as proton release and uptake have been observed for an azulenic analog of wild-type bacteriorhodopsin. The release and uptake of protons have been measured using a highly sensitive electrochemical technique. Bacteriorhodopsin membrane patches on a tin-oxide electrode produce a transient photocurrent that is negative for proton release and positive for proton uptake. For azulenic bacteriorhodopsin the photocurrent is approximately 20% of the transient observed with native bacteriorhodopsin. The existence of the photoinduced absorbance changes and the transient photocurrent are important results for gaining further insight into the photoinduced function of bacteriorhodopsin.

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收藏

页码：867 / 869

页数：3

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