Concerted double proton-transfer electron-transfer between catechol and superoxide radical anion

2017 ◽  
Vol 19 (38) ◽  
pp. 26179-26190 ◽  
Author(s):  
Jorge Quintero-Saumeth ◽  
David A. Rincón ◽  
Markus Doerr ◽  
Martha C. Daza
Keyword(s):  
Electron Transfer ◽  
Proton Transfer ◽  
Superoxide Anion ◽  
Radical Anion ◽  
Reaction Rate ◽  
Superoxide Radical ◽  
Superoxide Radical Anion ◽  
Double Proton Transfer

Catechol reacts with a superoxide anion via concerted double proton-transfer electron-transfer with a reaction rate that is dominated by tunneling.

Intermolecular interactions and proton transfer in the hydrogen halide–superoxide anion complexes

2016 ◽  
Vol 18 (8) ◽  
pp. 6201-6208 ◽  
Author(s):  
Sebastian J. R. Lee ◽  
J. Wayne Mullinax ◽  
Henry F. Schaefer
Keyword(s):  
Proton Transfer ◽  
Ab Initio ◽  
Intermolecular Interactions ◽  
Superoxide Anion ◽  
Radical Anion ◽  
Superoxide Radical ◽  
Hydrogen Halide ◽  
Superoxide Radical Anion ◽  
Anion Complexes

We characterize the intermolecular interactions between the halogen halides and the superoxide radical anion with ab initio computations.

Chemical repair mechanisms of damaged tyrosyl and tryptophanyl residues in proteins by the superoxide radical anion

2020 ◽  
Vol 44 (6) ◽  
pp. 2505-2513
Author(s):  
Leonardo Muñoz-Rugeles ◽  
Annia Galano ◽  
Juan Raúl Alvarez-Idaboy
Keyword(s):  
Superoxide Anion ◽  
Radical Anion ◽  
Anion Radical ◽  
Superoxide Radical ◽  
Superoxide Anion Radical ◽  
Superoxide Radical Anion ◽  
Diffusion Controlled ◽  
Repair Mechanisms

Even though reaction of the superoxide anion radical/hydroperoxide radical could lead to oxidation of biomolecules, it can repair oxidized tyrosyl and tryptophanyl residues in proteins at diffusion-controlled rates.

The other side of the superoxide radical anion: its ability to chemically repair DNA oxidized sites

2018 ◽  
Vol 54 (97) ◽  
pp. 13710-13713 ◽  
Author(s):  
Leonardo Muñoz-Rugeles ◽  
Annia Galano ◽  
Juan Raúl Alvarez-Idaboy
Keyword(s):  
Superoxide Anion ◽  
Radical Anion ◽  
Anion Radical ◽  
Superoxide Radical ◽  
Superoxide Anion Radical ◽  
The Other ◽  
Superoxide Radical Anion ◽  
Diffusion Controlled

Even though reaction of the superoxide anion radical/hydroperoxide radical could lead to oxidation of biomolecules, it can reduce oxidized DNA at diffusion controlled rates.

N,N.N′,N′-tetramethylhydroethidine (TMHE) - in search for better probes for the detection of superoxide radical anion

2017 ◽  
Vol 108 ◽  
pp. S38
Author(s):  
Adam Sikora ◽  
Radosław Michalski ◽  
Micael Hardy ◽  
Olivier Ouari ◽  
Jan Adamus ◽  
...  
Keyword(s):  
Radical Anion ◽  
Superoxide Radical ◽  
Superoxide Radical Anion

scholarly journals Reactivity of Superoxide Radical Anion with Cyclic Nitrones:  Role of Intramolecular H-Bond and Electrostatic Effects

2007 ◽  
Vol 129 (26) ◽  
pp. 8177-8191 ◽  
Author(s):  
Frederick A. Villamena ◽  
Shijing Xia ◽  
John K. Merle ◽  
Robert Lauricella ◽  
Beatrice Tuccio ◽  
...  
Keyword(s):  
Radical Anion ◽  
Superoxide Radical ◽  
Electrostatic Effects ◽  
Superoxide Radical Anion ◽  
Cyclic Nitrones
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