Stimulation of oxygen evolution in photosystem II by Copper(II) ions

被引：0
|
作者：
Burda, K
Kruk, J
Strzalka, K
Schmid, GH [1 ]
机构：
[1] Univ Bielefeld, Fak Biol, Lehrstuhl Zellphysiol, D-33501 Bielefeld, Germany
[2] H Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland
[3] Jagiellonian Univ, Jan Zurzycki Inst Mol Biol, Dept Plant Physiol & Biochem, PL-31120 Krakow, Poland
来源：
ZEITSCHRIFT FUR NATURFORSCHUNG C-A JOURNAL OF BIOSCIENCES | 2002年 / 57卷 / 9-10期
关键词：
Copper(II) ions; stimulation of oxygen evolution; photosystem II;
D O I：
暂无
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：
We have found that Copper(II) ions at about equimolar Cu2+/photosystem II (PS II) reaction center proportions stimulate oxygen evolution nearly twofold. This high affinity Cu-binding site is different from the binding sites of Mn and Ca ions. The analysis of the CU2+ content in PS II preparations isolated from wild-type tobacco and a tobacco mutant deficient in light-harvesting complex suggests that CU2+ may be a native component of PS II and may take part in the oxygen evolution process. At higher concentrations, CU2+ ions inhibit oxygen evolution and quench fluorescence.
引用
收藏
页码：853 / 857
页数：5
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