Optical and electrical properties of bacteriorhodopsin Langmuir-Blodgett films: II. D96N mutant and its 4-keto and 9-demethyl retinal analogs

被引:8
|
作者
Weetall, HH [1 ]
Druzhko, AB
Samuelson, LA
de Lera, AR
Alvarez, R
机构
[1] Natl Inst Stand & Technol, Div Biotechnol, Gaithersburg, MD 20899 USA
[2] USA, Natick Res Dev & Engn Ctr, Div Biotechnol, Natick, MA 01760 USA
[3] Univ Virgo, Fac Ciencias, Dept Quim Pura & Aplicada, Virgo 36200, Spain
来源
BIOELECTROCHEMISTRY AND BIOENERGETICS | 1997年 / 44卷 / 01期
关键词
Langmuir-Blodgett films; bacteriorhodopsin; purple membranes; photocurrents;
D O I
10.1016/S0302-4598(97)00069-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
Langmuir-Blodgett films prepared from purple membranes of the D96N mutant and two of its chromophore analogs (4-keto-retinal and 9-demethyl-retinal) were characterized for M-state kinetics and photocurrent production. These studies indicated that unlike the wild-type (WT) and its identical chromophore analogs, the photocurrent transients were unusual, showing proton release at pH 3.0. Several possible explanations for these results are considered. (C) 1997 Elsevier Science S.A.
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页码:37 / 43
页数:7
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