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.

Synthetic methodologies leading to porphyrin-quinone conjugates

2016 ◽  
Vol 20 (01n04) ◽  
pp. 167-189
Author(s):  
Mariana F. do C. Cardoso ◽  
Luana da S. M. Forezi ◽  
Fernando de C. da Silva ◽  
Ângelo C. Pinto ◽  
Maria G. P. M. S. Neves ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Biological Significance ◽  
Transfer Processes ◽  
Donor Acceptor ◽  
Synthetic Methodologies ◽  
Electron Transfer Processes

This review focuses on synthetic strategies that have been established for the preparation of porphyrin-quinone conjugates of potential biological significance and as donor–acceptor compounds for electron transfer processes.

Review Lecture - Electron transfer reactions and living polymers

1964 ◽  
Vol 279 (1377) ◽  
pp. 260-290 ◽  
Keyword(s):  
Electron Transfer ◽  
Transfer Reactions ◽  
Radical Ions ◽  
Electron Transfer Reactions ◽  
Transfer Processes ◽  
Electron Transfer Processes ◽  
Living Polymers

I propose to review here two aspects of our work concerned with the chemistry of radical-ions, electron-transfer processes and living polymers. The last topic will be described first (§§ 1 to 5) and the remaining part of the paper (§§ 6 to 9 ) will be devoted to problems of electron-transfer processes involving stable and labile radical-ions and to the discussion of some intermediates formed in these reactions.

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