The absolute concentration for semiquinone free radical was obtained using ruby as a secondary standard, calibrated with strong pitch reference of known free radical content obtained by Bruker. 6 ...

In the last decade, starting pitchers have suffered more injuries and become more disposable. But a three-time Cy Young winner says MLB should up the rules.

Furthermore, the monomer stabilized the intermediate semiquinone free radical through effective delocalization of the conjugated structure and ordered π-π stacking during the redox process, ...

3.4 Semiquinone radical concentrations, antioxidant analysis–trolox equivalent antioxidant capacity, and pro-oxidant-to-antioxidant ratios of the HAs Interestingly, the SQR concentration of the NHA ...

The article, “Neutron crystallography of a semiquinone radical intermediate of copper amine oxidase reveals a substrate-assisted conformational change of the peptidyl quinone cofactor,” was ...

Thus, transfer of the first electron from FADH 2 to the CII.Q results in generation of semiquinone anion (CII.Q −) in the reactions (11, 13). Then, semiquinone anion binds proton H + forming ...

Moreover, stabilization of di- tert -butylsemiquinone radical (DTB-SQ) in water was achieved by binding to the designed metalloproteins, which resulted in the radical being shielded from the aqueous ...

Figure 1: Semiquinone is unstable as a free radical, but its stability can be tailored in a protein environment. a, Scheme of a canonical equilibrium between QH 2, the anion radical SQ • and Q.

More than 80% of the enhanced • O 2− generation can be inhibited by rotenone, thus supporting a • O 2− generation mechanism involving the reduction of ubiquinone to an unstable semiquinone radical. 25 ...

ABSTRACT: Quinoid entities, in which quinone and hydroquinone groups equilibrate via a semiquinone radical intermediate, are a common structural feature in humic materials. The electron paramagnetic ...

Quinoid entities, in which quinone and hydroquinone groups equilibrate via a semiquinone radical intermediate, are a common structural feature in humic materials. The electron paramagnetic resonance ...