title: 1H NMR study on equilibrium between parallel G-quartet structures.
abstract: Structural transition of parallel G-quartet formed by d(TG4T) are induced by monovalent cations. In the presence of K+ ion, G-quartet takes a single conformation, while in the presence of Na+ ion, the equilibrium between more than three conformations were observed.
authors.affiliation: Department of Applied Biology, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
authors.forename: Kenji
authors.initials: K
authors.lastname: Kanaori
authors.forename: Ami
authors.initials: A
authors.lastname: Yasumura
authors.forename: Kunihiko
authors.initials: K
authors.lastname: Tajima
authors.forename: Keisuke
authors.initials: K
authors.lastname: Makino
mesh_terms: D020029:Base Pairing / Q000187:drug effects; D009682:Magnetic Resonance Spectroscopy; D009690:Nucleic Acid Conformation / Q000187:drug effects; D009841:Oligonucleotides / Q000737:chemistry*; D011188:Potassium / Q000494:pharmacology; D012964:Sodium / Q000494:pharmacology
chemical_list: D009841:Oligonucleotides; D012964:Sodium; D011188:Potassium