The Role of Cytochrome b559 in Photoreactivation of Oxygen-Evolving Center of Photosystem II Membranes

Author(s):  
Naoki Mizusawa ◽  
Mitsue Miyao ◽  
Takashi Yamashita
Author(s):  
Keisuke Saito ◽  
Minesato Nakagawa ◽  
Manoj Mandal ◽  
Hiroshi Ishikita

AbstractPhotosystem II (PSII) contains Ca2+, which is essential to the oxygen-evolving activity of the catalytic Mn4CaO5 complex. Replacement of Ca2+ with other redox-inactive metals results in a loss/decrease of oxygen-evolving activity. To investigate the role of Ca2+ in this catalytic reaction, we investigate artificial Mn3[M]O2 clusters redox-inactive metals  [M] ([M]  = Mg2+, Ca2+, Zn2+, Sr2+, and Y3+), which were synthesized by Tsui et al. (Nat Chem 5:293, 2013). The experimentally measured redox potentials (Em) of these clusters are best described by the energy of their highest occupied molecular orbitals. Quantum chemical calculations showed that the valence of metals predominantly affects Em(MnIII/IV), whereas the ionic radius of metals affects Em(MnIII/IV) only slightly.


1995 ◽  
Vol 270 (50) ◽  
pp. 30181-30186 ◽  
Author(s):  
Yael Eisenberg-Domovich ◽  
Ralf Oelmüller ◽  
Reinhold G. Herrmann ◽  
Itzhak Ohad

Author(s):  
Naoki Mizusawa ◽  
Isamu Sakurai ◽  
Hisako Kubota ◽  
Hajime Wada

Biochemistry ◽  
1992 ◽  
Vol 31 (46) ◽  
pp. 11449-11459 ◽  
Author(s):  
Carolyn A. Buser ◽  
Bruce A. Diner ◽  
Gary W. Brudvig

2005 ◽  
Vol 1706 (1-2) ◽  
pp. 68-80 ◽  
Author(s):  
Marja Hakala ◽  
Ilona Tuominen ◽  
Mika Keränen ◽  
Taina Tyystjärvi ◽  
Esa Tyystjärvi

1999 ◽  
Vol 1411 (1) ◽  
pp. 180-191 ◽  
Author(s):  
Ann Magnuson ◽  
Maria Rova ◽  
Fikret Mamedov ◽  
Per-Olof Fredriksson ◽  
Stenbjörn Styring

Biochemistry ◽  
2007 ◽  
Vol 46 (11) ◽  
pp. 3211-3223 ◽  
Author(s):  
Cheng-I Lee ◽  
K. V. Lakshmi ◽  
Gary W. Brudvig

1992 ◽  
Vol 32 (1) ◽  
pp. 71-78 ◽  
Author(s):  
Jian-Ren Shen ◽  
Taka-aki Ono ◽  
Yorinao Inoue

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