Semiquinone free radicals and oxygen. Pulse radiolysis study of one electron transfer equilibria

1973 ◽  
Vol 69 (0) ◽  
pp. 814 ◽  
Author(s):  
Kantilal B. Patel ◽  
Robin L. Willson
Keyword(s):  
Electron Transfer ◽  
Free Radicals ◽  
Pulse Radiolysis ◽  
Oxygen Pulse

scholarly journals Thiyl and phenoxyl free radicals and NADH Direct observation of one-electron oxidation

1986 ◽  
Vol 240 (3) ◽  
pp. 897-903 ◽  
Author(s):  
L G Forni ◽  
R L Willson
Keyword(s):  
Electron Transfer ◽  
Free Radicals ◽  
Hydrogen Atom ◽  
Pulse Radiolysis ◽  
Biological Significance ◽  
Transfer Reactions ◽  
Absolute Rate ◽  
Transfer Processes ◽  
Biochemical Systems ◽  
Electron Transfer Processes

Absolute rate constants for the reaction of NADH with thiyl free radicals derived from various sulphur-containing compounds of biological significance were measured by using the technique of pulse radiolysis. These and related reactions with phenoxyl free radicals are believed to occur through one-electron-transfer processes. Further evidence comes from studies with deuterated NADH. The results support the possibility that, in biochemical systems, thiols may act as catalysts linking hydrogen-atom and electron-transfer reactions.

scholarly journals Thiyl free radicals and the oxidation of ferrocytochrome c Direct observation of coupled hydrogen-atom- and electron-transfer reactions

1986 ◽  
Vol 240 (3) ◽  
pp. 905-907 ◽  
Author(s):  
L G Forni ◽  
R L Willson
Keyword(s):  
Electron Transfer ◽  
Free Radicals ◽  
Hydrogen Atom ◽  
Pulse Radiolysis ◽  
Transfer Reactions ◽  
Absolute Rate ◽  
Electron Transfer Process ◽  
Electron Transfer Reactions ◽  
Thiyl Radicals ◽  
Ferrocytochrome C

Absolute rate constants for the reaction of ferrocytochrome c with the thiyl radicals derived from cysteine, GSH, penicillamine and N-(2-mercaptopropionyl)glycine were measured by using the technique of pulse radiolysis. The reaction is believed to occur through a one-electron-transfer process, in agreement with the hypothesis that thiols may act as catalysts linking hydrogen-atom- and electron-transfer reactions.

Intermolecular electron transfer involving phosphoryl and nonphosphoryl methionine and tryptophan, a pulse radiolysis study

1997 ◽  
Vol 50 (4) ◽  
pp. 385-391 ◽  
Author(s):  
Chu Gao-Sheng ◽  
Yao Si-De ◽  
Zhang Zhi-Cheng ◽  
Wang Wen-Feng ◽  
Zhang Man-Wei
Keyword(s):  
Electron Transfer ◽  
Pulse Radiolysis ◽  
Intermolecular Electron Transfer
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