title: A New Type of Electron Relay Station in Proteins: Three-Piece S:Π∴S↔S∴Π:S Resonance Structure.
abstract: A type of relay station for electron transfer in proteins, three-piece five-electron bonding, is introduced in this paper, which is also first proposed here. The ab initio calculations predict the formation of S:Π∴S↔S∴Π:S resonance binding with an aromatic ring located in the middle of two sulfur-containing groups, which may participate in electron-hole transport in proteins. These special structures can lower the local ionization energies to capture electron holes efficiently and may be easily formed and broken because of their proper binding energies. In addition, the UV-vis spectra provide evidence of the formations of the three-piece five-electron binding. The cooperation of three adjacent pieces may be advantage to promote electron transfer a longer distance.
authors.affiliation: School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400030, People's Republic of China.
authors.forename: Weichao
authors.initials: W
authors.lastname: Sun
authors.affiliation: School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400030, People's Republic of China.
authors.forename: Mengyao
authors.initials: M
authors.lastname: Shao
authors.affiliation: Department of Chemistry and Supercomputing Institute University of Minnesota, Minneapolis, Minnesota 55455, United States.
authors.forename: Haisheng
authors.initials: H
authors.lastname: Ren
authors.affiliation: School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400030, People's Republic of China.
authors.forename: Dong
authors.initials: D
authors.lastname: Xiao
authors.affiliation: School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400030, People's Republic of China.
authors.forename: Xin
authors.initials: X
authors.lastname: Qin
authors.affiliation: School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400030, People's Republic of China.
authors.forename: Li
authors.initials: L
authors.lastname: Deng
authors.affiliation: School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400030, People's Republic of China ; Department of Chemistry and Supercomputing Institute University of Minnesota, Minneapolis, Minnesota 55455, United States.
authors.forename: Xiaohua
authors.initials: X
authors.lastname: Chen
authors.affiliation: Department of Chemistry and Supercomputing Institute University of Minnesota, Minneapolis, Minnesota 55455, United States.
authors.forename: Jiali
authors.initials: J
authors.lastname: Gao