NDLI: Binuclear Manganese(III) Complexes as Electron Donors in D1/D2/Cytochrome b 559 Preparations Isolated from Spinach Photosystem II Membrane Fragments

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Binuclear Manganese(III) Complexes as Electron Donors in D1/D2/Cytochrome b 559 Preparations Isolated from Spinach Photosystem II Membrane Fragments

Content Provider	Semantic Scholar
Author	Allakhverdiev, Suleyman I. Karacan, Mehmet Sayım Somer, Güler Karacan, Nurcan Khan, Ejaz M. Rane, Sharayu Padhye, Subhash Klimov, Vyacheslav V. Renger, Gernot
Copyright Year	1994
Abstract	Abstract The capability of different manganese complexes to act as PS II electron donors in D1/D2/ cytochrome b 559 complexes has been analyzed by measuring actinic light-induced absorption changes at 680 nm (650 nm) and 340 nm, reflecting the photoaccumulation of Pheophytin- (Pheo-) and the reduction of NADP+ respectively. The data obtained reveal: a) the donor capacity of synthetic binuclear Mn(III)2 complexes containing aromatic ligands significantly exceeds that for MnCl2 in both cases, i.e. Pheo- photoaccumulation and NADP+ reduction; b) manganese complexes can serve as suitable electron donors for light-induced NADP+ reduction catalyzed by D1/D2/cytochrome b559 complexes and ferredoxin plus ferredoxin- NADP+ reductase under anaerobic conditions and c) the specific turnover rate of the system leading to NADP+ reduction is extremely small. The implications of these findings are briefly discussed.
Starting Page	587
Ending Page	592
Page Count	6
File Format	PDF HTM / HTML
DOI	10.1515/znc-1994-9-1008
PubMed reference number	23091875
Journal	Medline
Volume Number	49
Alternate Webpage(s)	http://zfn.mpdl.mpg.de/data/Reihe_C/49/ZNC-1994-49c-0587.pdf
Alternate Webpage(s)	https://doi.org/10.1515/znc-1994-9-1008
Journal	Zeitschrift fur Naturforschung. C, Journal of biosciences
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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