title: Resonant dissociative electron attachments to cysteine and cystine.
abstract: Shape-resonant electron attachments to cysteine and cystine and the subsequent dissociation dynamics are investigated with the single-center expansion potential scattering calculations. Selectivity of the direct bond cleavage at a given resonant state or by the specific resonant state coupling is demonstrated with the one-dimensional complex potential energy curves of the temporary anion (cysteine)(-). The wave function of the lowest shape resonant state of the temporary anion (cystine)(-) distinctly shows the localized anti-bond (S-S)* character, implying that this disulfide bond can be easily broken due to the low-energy electron resonant attachment.
authors.affiliation: Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, China.
authors.forename: Yong-Feng
authors.initials: YF
authors.lastname: Wang
authors.forename: Shan Xi
authors.initials: SX
authors.lastname: Tian
authors.forename: Jinlong
authors.initials: J
authors.lastname: Yang
mesh_terms: D003545:Cysteine / Q000737:chemistry*; D003553:Cystine / Q000737:chemistry*; D004583:Electrons; D008962:Models, Theoretical
chemical_list: D003553:Cystine; D003545:Cysteine