Evidence for Asymmetric Electron Transfer in Cyanobacterial Photosystem I:  Analysis of a Methionine-to-Leucine Mutation of the Ligand to the Primary Electron Acceptor A0†

Biochemistry ◽  
2004 ◽  
Vol 43 (16) ◽  
pp. 4741-4754 ◽  
Author(s):  
Rachel O. Cohen ◽  
Gaozhong Shen ◽  
John H. Golbeck ◽  
Wu Xu ◽  
Parag R. Chitnis ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Photosystem I ◽  
Electron Acceptor ◽  
Primary Electron ◽  
Primary Electron Acceptor ◽  
Primary Electron Acceptor A0

scholarly journals High-Resolution Electronic Structure of the Primary Electron Acceptor A0 of Photosystem I

2015 ◽  
Vol 108 (2) ◽  
pp. 604a
Author(s):  
Stuart Smith ◽  
Jaya Tripathi ◽  
Sergey Milikisiyants ◽  
Sijie Hao ◽  
John H. Golbeck ◽  
...  
Keyword(s):  
Electronic Structure ◽  
High Resolution ◽  
Photosystem I ◽  
Electron Acceptor ◽  
Primary Electron ◽  
Primary Electron Acceptor ◽  
Primary Electron Acceptor A0

Spectral Resolution of the Primary Electron Acceptor A0 in Photosystem I

2012 ◽  
Vol 116 (10) ◽  
pp. 3380-3386 ◽  
Author(s):  
Adrien Chauvet ◽  
Naranbaatar Dashdorj ◽  
John H. Golbeck ◽  
T. Wade Johnson ◽  
Sergei Savikhin
Keyword(s):  
Photosystem I ◽  
Electron Acceptor ◽  
Spectral Resolution ◽  
Primary Electron ◽  
Primary Electron Acceptor ◽  
Primary Electron Acceptor A0

The site of electron transport inhibition by bentazon (3-isopropyl-1H-2,1,3-benzothiadiazin-(4)3H-one 2,2-dioxide) in isolated chloroplasts

1982 ◽  
Vol 60 (4) ◽  
pp. 409-412 ◽  
Author(s):  
Rungsit Suwanketnikom ◽  
Kriton K. Hatzios ◽  
Donald Penner ◽  
Duncan Bell
Keyword(s):  
Electron Transport ◽  
Photosystem Ii ◽  
Photosystem I ◽  
Electron Acceptor ◽  
Photosynthetic Electron Transport ◽  
Primary Electron ◽  
Photochemical Reactions ◽  
Spinacea Oleracea ◽  
Primary Electron Acceptor ◽  
Isolated Chloroplasts

The effect of bentazon (3-isopropyl-1H-2,1,3-benzathiadiazin-(4)3H-one 2,2-dioxide) on various photochemical reactions of isolated spinach (Spinacea oleracea L.) chloroplasts was studied at concentrations 0, 5, 15, 45, and 135 μM. Bentazon at a concentration of 135 μM strongly inhibited uncoupled electron transport from water to ferricyanide or to methylviologen with inhibition percentages greater than 90%. Photosystem II mediated electron transport from water to oxidized diaminodurene, with 2,5-dibromo-3-methyl-6-isopropyl-p-benzoquinone (DBMIB) blocking photosystem I, was also strongly inhibited by bentazon at 135 μM but less with lower concentrations of bentazon. Photosystem I mediated transfer of electrons from diaminodurene to methylviologen, with 3,4-dichlorophenyl-1,1-dimethylurea (DCMU) blocking photosystem II, was not inhibited by bentazon at any concentration examined. Transfer of electrons from catechol to methylviologen in hydroxylamine-treated chloroplasts was inhibited by bentazon, and the inhibition percentages were again concentration dependent. The data indicate that the site of bentazon inhibition of the photosynthetic electron transport is at the reducing side of photosystem II, between the primary electron acceptor Q and plastoquinone.

Primary electron acceptor complex of photosystem I in spinach chloroplasts

Nature ◽  
1975 ◽  
Vol 256 (5519) ◽  
pp. 668-670 ◽  
Author(s):  
M. C. W. EVANS ◽  
C. K. SIHRA ◽  
J. R. BOLTON ◽  
R. CAMMACK
Keyword(s):  
Photosystem I ◽  
Electron Acceptor ◽  
Primary Electron ◽  
Acceptor Complex ◽  
Spinach Chloroplasts ◽  
Primary Electron Acceptor
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