A new type of electron relay station in proteins: three-piece S: π∴ S↔ S∴ π: S Resonance Structure

Sun, W.; Shao, M.; Ren, H.; Xiao, D.; Qin, X.; Deng, L.; Chen, X.; Gao, J. J. Phys. Chem. C, 2015, 119 (13), 6998–7005.