Near-IR Irradiation of the S2State of the Water Oxidizing Complex of Photosystem II at Liquid Helium Temperatures Produces the Metalloradical Intermediate Attributed to S1YZ• †

Biochemistry ◽  
2003 ◽  
Vol 42 (10) ◽  
pp. 3045-3053 ◽  
Author(s):  
Dionysios Koulougliotis ◽  
Jian-Ren Shen ◽  
Nikolaos Ioannidis ◽  
Vasili Petrouleas
Keyword(s):  
Photosystem Ii ◽  
Liquid Helium ◽  
Near Ir ◽  
Water Oxidizing Complex

A Mn(II)−Mn(III) EPR Signal Arises from the Interaction of NO with the S1State of the Water-Oxidizing Complex of Photosystem II†

Biochemistry ◽  
1998 ◽  
Vol 37 (11) ◽  
pp. 3581-3587 ◽  
Author(s):  
Josephine Sarrou ◽  
Nikolaos Ioannidis ◽  
Yannis Deligiannakis ◽  
Vasili Petrouleas
Keyword(s):  
Photosystem Ii ◽  
Epr Signal ◽  
Water Oxidizing Complex

Photoactivation of the water-oxidizing complex of photosystem II core complex depleted of functional Mn

1991 ◽  
Vol 1060 (1) ◽  
pp. 51-58 ◽  
Author(s):  
Noriaki Tamura ◽  
Hiroyuki Kamachi ◽  
Nobuyuki Hokari ◽  
Harutoshi Masumoto ◽  
Hiroshi Inoué
Keyword(s):  
Photosystem Ii ◽  
Core Complex ◽  
Water Oxidizing Complex

Stabilization of the oxygen-evolving complex of photosystem II bybicarbonate and glycinebetaine in thylakoid and subthylakoidpreparations

2003 ◽  
Vol 30 (7) ◽  
pp. 797 ◽  
Author(s):  
Vyacheslav V. Klimov ◽  
Suleyman I. Allakhverdiev ◽  
Yoshitaka Nishiyama ◽  
AndreiA. Khorobrykh ◽  
Norio Murata
Keyword(s):  
Photosystem Ii ◽  
Protective Effect ◽  
Thermal Inactivation ◽  
Oxygen Evolving Complex ◽  
Photosynthetic Oxygen Evolution ◽  
Protective Effects ◽  
Synechococcus Sp ◽  
Oxygen Evolving ◽  
Triton X ◽  
Water Oxidizing Complex

The protective effect of 1 M glycinebetaine on thermal inactivation of photosynthetic oxygen evolution in isolated photosystem II membrane fragments from spinach is observed in CO2-free medium in both the presence and absence of added 2 mM bicarbonate. Conversely, the protective effect of 2 mM bicarbonate against thermoinactivation is seen in the absence as well as in the presence of 1 M glycinebetaine. The stabilizing effect of bicarbonate is also observed in thylakoid membranes from Synechococcus sp. PCC 7002 treated with 0.1% Triton X-100, and in unbroken spinach thylakoids. It is shown for the first time that bicarbonate protects the water-oxidizing complex against inactivation induced by pre-incubation of photosystem II membrane fragments (25°C) and thylakoids (40°C) at low pH (5.0–5.5) in non-bicarbonate-depleted medium. We conclude that the protective effects of glycinebetaine and bicarbonate are of a different nature; glycinebetaine acts as a non-specific, compatible, zwitterionic osmolyte while bicarbonate is considered an essential constituent of the water-oxidizing complex of photosystem II, important for its functioning and stabilization.

scholarly journals Natural isoforms of the Photosystem II D1 subunit differ in photoassembly efficiency of the water-oxidizing complex

2015 ◽  
Vol 128 (2) ◽  
pp. 141-150 ◽  
Author(s):  
David J. Vinyard ◽  
Jennifer S. Sun ◽  
Javier Gimpel ◽  
Gennady M. Ananyev ◽  
Stephen P. Mayfield ◽  
...  
Keyword(s):  
Photosystem Ii ◽  
Water Oxidizing Complex

Photooxidation and photoreduction of exogenous cytochrome c by photosystem II preparations after various modifications of the water-oxidizing complex

2018 ◽  
Vol 56 (1) ◽  
pp. 244-253 ◽  
Author(s):  
A. A. Khorobrykh ◽  
D. V. Yanykin ◽  
V. V. Klimov
Keyword(s):  
Cytochrome C ◽  
Photosystem Ii ◽  
Water Oxidizing Complex

Photodamage of the manganese–calcium oxide: a model for UV-induced photodamage of the water oxidizing complex in photosystem II

2013 ◽  
Vol 42 (14) ◽  
pp. 4772 ◽  
Author(s):  
Mohammad Mahdi Najafpour ◽  
Babak Pashaei ◽  
Zahra Zand
Keyword(s):  
Photosystem Ii ◽  
Calcium Oxide ◽  
Water Oxidizing Complex

Photoactivation of the latent water-oxidizing complex in photosystem II membranes isolated from dark-grown spruce seedlings

1994 ◽  
Vol 91 (4) ◽  
pp. 747-753 ◽  
Author(s):  
Hiroyuki Kamachi ◽  
Noriaki Tamura ◽  
Takashi Yoshihira ◽  
Tatsuo Oku
Keyword(s):  
Photosystem Ii ◽  
Water Oxidizing Complex

Reconstruction of the water-oxidizing complex in manganese-depleted Photosystem II using synthetic manganese complexes

2005 ◽  
Vol 81 (2) ◽  
pp. 114-120 ◽  
Author(s):  
Guangye Han ◽  
Jun Li ◽  
Guiying Chen ◽  
Lin Ling ◽  
Shuqin Li ◽  
...  
Keyword(s):  
Photosystem Ii ◽  
Manganese Complexes ◽  
Water Oxidizing Complex
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