The temperature dependence of high-resolution 1H NMR spectra of Rhodobacter sphaeroides photosynthetic reaction centres in a temperature range of 25-40°C

被引：0
|
作者：
Timofeev, VP
Knox, PP
Zakharova, NI
Seifullina, NH
Rubin, AB
机构：
[1] Russian Acad Sci, VA Engelhardt Mol Biol Inst, Moscow 119991, Russia
[2] Moscow MV Lomonosov State Univ, Dept Biol, Moscow 119992, Russia
来源：
BIOFIZIKA | 2004年 / 49卷 / 05期
关键词：
purple bacteria; photosynthetic reaction center; NMR; electron transport;
D O I：
暂无
中图分类号：
Q6 [生物物理学];
学科分类号：
071011 ;
摘要：
High-resolution H-1-NMR spectra registered within a temperature range of 25-40degreesC revealed a nonmonotonous dome-shaped temperature dependence of the ratio between integral NMR signal intensities determined at ppm intervals 2.5-4.5 and 0.2-2.5 with a maximum at 30degreesC. This may be due to RC structural changes accompanying the temperature rise and accelerating the recombination reaction between oxidized bacteriochlorophyll and reduced primary quinone at temperatures above 30degreesC.
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收藏
页码：829 / 831
页数：3
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