title: Binding of a positron to nucleic base molecules and their pairs.
abstract: Hole attack: A theoretical one-electron oxidation of nucleic base molecules and their pairs by positron is proposed, based on the calculations for positron-attached neutral forms of species, adenine (A), thymine (T), guanine (G), cytosine (C), and their Watson-Crick base pairs (A-T and G-C). The results reveal that binding of a positron to neutral isolated nucleic base molecules is base-selective.
authors.affiliation: Quantum Chemistry Division, Yokohama City University, Kanazawa-ku, Yokohama 236-0027 (Japan).
authors.forename: Katsuhiko
authors.initials: K
authors.lastname: Koyanagi
authors.forename: Yukiumi
authors.initials: Y
authors.lastname: Kita
authors.forename: Yasuteru
authors.initials: Y
authors.lastname: Shigeta
authors.forename: Masanori
authors.initials: M
authors.lastname: Tachikawa
mesh_terms: D000225:Adenine / Q000737:chemistry*; D020029:Base Pairing; D003596:Cytosine / Q000737:chemistry*; D006147:Guanine / Q000737:chemistry*; D008958:Models, Molecular; D010084:Oxidation-Reduction; D055672:Static Electricity; D013941:Thymine / Q000737:chemistry*
chemical_list: D006147:Guanine; D003596:Cytosine; D000225:Adenine; D013941:Thymine
keywords: Watson-Crick base pairs; charge transfer; multi-component molecular orbitals; nucleic bases; positron binding