One-electron-transfer reactions in biochemical systems II. The reaction of free radicals formed in the enzymic oxidation

1969 ◽  
Vol 172 (3) ◽  
pp. 357-369 ◽  
Author(s):  
Toshiyuki Ohnishi ◽  
Hiroko Yamazaki ◽  
Takashi Iyanagi ◽  
Takao Nakamura ◽  
Isao Yamazaki
Keyword(s):  
Electron Transfer ◽  
Free Radicals ◽  
Transfer Reactions ◽  
Electron Transfer Reactions ◽  
Enzymic Oxidation ◽  
Biochemical Systems

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.

Electron-transfer reactions involving simple free radicals

1983 ◽  
Vol 51 (2) ◽  
pp. 155-179 ◽  
Author(s):  
Wayne K. Wilmarth ◽  
David M. Stanbury ◽  
James E. Byrd ◽  
Henry N. Po ◽  
Chee-Peng Chua
Keyword(s):  
Electron Transfer ◽  
Free Radicals ◽  
Transfer Reactions ◽  
Electron Transfer Reactions
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