Figure 1: Semiquinone is unstable as a free radical, but its stability can be tailored in a protein environment. Measurements were performed with a Bruker EMX EPR spectrometer (Bruker Instruments ...

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 ...

William F. DeGrado of the University of California, San Francisco, and coworkers designed and synthesized their protein, called DFsc-Zn(II) 2, to bind and subdue the semiquinone anion radical form ...

Neutron Crystallography of a Semiquinone Radical Intermediate of Copper Amine Oxidase Reveals a Substrate-Assisted Conformational Change of the Peptidyl Quinone Cofactor. ACS Catalysis , 2023; 13 ...

C. G. Pierpont, A. S. Attia, “Spin Coupling Interactions in Transition Metal Complexes Containing Radical o-Semiquinone Ligands. A Review”, Collect. ... 415-433 (2001). C. G. Pierpont, C. W. Lange ...