ROTATIONAL MOBILITY OF THE PHOTOREACTION CENTER IN CHROMATOPHORE MEMBRANES OF RHODOSPIRILLUM-RUBRUM

被引：10

作者：

MAR, T ^{[1
]}

PICOREL, R ^{[1
]}

GINGRAS, G ^{[1
]}

机构：

[1] UNIV MONTREAL, DEPT BIOCHIM, MONTREAL H3C 3J7, QUEBEC, CANADA

来源：

BIOCHIMICA ET BIOPHYSICA ACTA | 1981年 / 637卷 / 03期

关键词：

D O I：

10.1016/0005-2728(81)90062-1

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 rotational mobility of the photoreaction center in chromatophores of R. rubrum was investigated by studying the photoinduced linear dichroism of absorption changes at 865 nm. Suspensions of chromatophores treated with ferricyanide (in order to bleach their antenna bacteriochlorophyll and thus minimize depolarization by energy transfer) were used. Very little depolarization of the photoinduced absorbance change at 865 nm was observed at room temperature for chromatophores immersed in a highly viscous medium over the time range 0-10 ms following an exciting light flash. In the light of independent evidence for transmembrane arrangement of the photoreaction center, the photoreaction center protein is immobilized in the chromatophore membrane for at least 10 ms.

引用

页码：546 / 550

页数：5

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