Semiquinone spontaneously reacts with oxygen to revert to a quinone state and produces superoxide anion (Oppermann 2007, Porte et al. 2009).
Oppermann, U
Porté, S, Valencia, E, Yakovtseva, EA, Borràs, E, Shafqat, N, Debreczeny, JE, Pike, AC, Oppermann, U, Farrés, J, Fita, I, Parés, X
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