TIME-RESOLVED SPECTROSCOPY OF PHOTOSYNTHETIC SYSTEMS .3. PHOTOSYSTEM-1 PREPARATIONS FROM THE CYANOBACTERIUM CHLOROGLOEA-FRITSCHII

被引：9

作者：

SPARROW, R

BROWN, RG

EVANS, EH

SHAW, D

机构：

[1] LANCASHIRE POLYTECH, SCH APPL BIOL, PRESTON PR1 2TQ, LANCS, ENGLAND

[2] SERC, DARESBURY LAB, WARRINGTON WA4 4AD, CHESHIRE, ENGLAND

[3] SERC, DARESBURY LAB, WARRINGTON WA4 4AD, CHESHIRE, ENGLAND

[4] LANCASHIRE POLYTECH, SCH CHEM, PRESTON PR1 2TQ, LANCS, ENGLAND

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY | 1990年 / 5卷 / 3-4期

关键词：

Chlorogloea fritschii; cyanobacteria; Photosystem; 1; redox effects; time-resolved fluorescence;

D O I：

10.1016/1011-1344(90)85057-4

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：

Fluorescence decay profiles for a photosystem 1 preparation from the cyanobacterium Chlorogloea fritschii are reported. The decay profiles are dominated by a short-lived decay component of some 20-30 ps, but also exhibit two other components of lifetimes 400-650 ps and 3.0-3.6 ns. Time-resolved spectra of the three components of the decay are reported and are assigned principally to chlorophyll-protein complexes with various degrees of coupling to the reaction centre. The effect of redox potential on photosystem 1 is reported. It is concluded that there is a species in the energy transfer chain intermediate between the main light-harvesting pigments and P700. © 1990.

引用

页码：445 / 455

页数：11

共 27 条

[1]

BROWN RG, 1983, PHOTOBIOCH PHOTOBIOP, V5, P87

[2] A REQUIREMENT FOR EDTA IN THE SEPARATION OF PHOTOSYSTEM-1 AND PHOTOSYSTEM-2 FROM THE CYANOBACTERIUM CHLOROGLOEA-FRITSCHII [J].