title: Activation and alteration of base selectivity by metal cations in the functionality-transfer reaction for RNA modification.
abstract: Previously, we reported that the 2-methylidene-1,3-diketone unit of 6-thioguanosine transferred selectively to the amino group of cytosine at pH 7.0 and that its selectivity was changed to the guanine base at pH 9.6. In this study, it was found that the functionality-transfer reaction enhanced selectivity for the guanine base in the presence of divalent transition metal cations such as Ni(2+) and Co(2+) at pH 7.4.
authors.affiliation: Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, Japan.
authors.forename: Kazumitsu
authors.initials: K
authors.lastname: Onizuka
authors.forename: Yosuke
authors.initials: Y
authors.lastname: Taniguchi
authors.forename: Shigeki
authors.initials: S
authors.lastname: Sasaki
mesh_terms: D002412:Cations / Q000737:chemistry; D003035:Cobalt / Q000737:chemistry*; D006147:Guanine / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D015394:Molecular Structure; D012313:RNA / Q000737:chemistry*; D012343:RNA, Transfer / Q000737:chemistry*; D012964:Sodium / Q000737:chemistry*; D013696:Temperature
chemical_list: D002412:Cations; D003035:Cobalt; D006147:Guanine; D012313:RNA; D012343:RNA, Transfer; D012964:Sodium