TEMPERATURE-DEPENDENCE OF CHLOROPHYLL FLUORESCENCE FROM THE LIGHT-HARVESTING COMPLEX II OF HIGHER-PLANTS

被引：44

作者：

RUBAN, AV ^{[1
]}

DEKKER, JP ^{[1
]}

HORTON, P ^{[1
]}

VANGRONDELLE, R ^{[1
]}

机构：

[1] UNIV SHEFFIELD, ROBERT HILL INST, DEPT MOLEC BIOL & BIOTECHNOL, SHEFFIELD S10 2UH, S YORKSHIRE, ENGLAND

来源：

PHOTOCHEMISTRY AND PHOTOBIOLOGY | 1995年 / 61卷 / 02期

关键词：

D O I：

10.1111/j.1751-1097.1995.tb03964.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：

Chlorophyll fluorescence spectra of LCHII, the light harvesting complex of photosystem II, have been recorded in the aggregated and trimeric forms for a range of temperatures from 293 to 4 K. At least five long-wavelength emitters in the 682-702 nm region with different temperature dependencies were found in the spectra of the aggregates. At 293 K the yield of LCHII trimers was higher than aggregates by a factor of 4, but, upon lowering the temperature, a fluorescence rise was observed which was much stronger for LCHII aggregates than for LCHII trimers, so that at 4 K their yields were comparable. The implications of these data in terms of the function of LCHII are discussed.

引用

页码：216 / 221

页数：6