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

页码：853 / 857

页数：5

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