Engineering of N-terminal threonines in the D1 protein impairs photosystem II energy transfer in Synechocystis 6803

被引:10
|
作者
Funk, C [1 ]
Schröder, WP [1 ]
Salih, G [1 ]
Wiklund, R [1 ]
Jansson, C [1 ]
机构
[1] Univ Stockholm, Arrhenius Lab, Dept Biochem, S-10691 Stockholm, Sweden
来源
FEBS LETTERS | 1998年 / 436卷 / 03期
基金
瑞典研究理事会;
关键词
D1; photosystem II; psbA; site-directed mutagenesis; Synechocystis;
D O I
10.1016/S0014-5793(98)01179-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
Mutants of the cyanobacterium Synechocystis sp. PCC 6803 with N-terminal changes in the photosystem (PSII) II D1 protein were: analysed by flash-induced oxygen evolution, chlorophyll a fluorescence decay kinetics and 77 K fluorescence emission spectra. The data presented here show that mutations of the Thr-2, Thr-3 and Thr-4 in D1 do not influence the oxygen evolution. A perturbation on the acceptor side was observed and the importance of the N-terminal threonines for an efficient energy transfer between the phycobilisome and PSII and for stability of the PSII complex was demonstrated. (C) 1998 Federation of European Biochemical Societies.
引用
收藏
页码:434 / 438
页数:5
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