Equilibrium shift by target DNA substrates for determination of DNA binding ligands.
An equilibrium containing the thiol derivative of Hoechst33258 (Ht-SH), glutathione (G-SH), and the corresponding homo and hetero disulfides was shifted by the addition of the duplex DNA. It was shown from the analysis of the components that the hetero disulfide Ht-SS-G increased by binding with the DNA (CA14) with an A(3)T(3) binding motif for the structure of Hoechst33258, and that the different equilibrium shift was observed in the presence of CT14 with no A(3)T(3) binding motif.
Tsujita
Saori
S
Graduate School of Pharmaceutical Sciences, Kyushu University, 3-1-1, Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
Tanada
Mikimasa
M
Kataoka
Tomonobu
T
Sasaki
Shigeki
S
D001483:Base Sequence; D006690:Bisbenzimidazole / Q000031:analogs & derivatives*; D004247:DNA / Q000737:chemistry*; D004220:Disulfides / Q000737:chemistry*; D005978:Glutathione / Q000737:chemistry*; D008024:Ligands; D009841:Oligonucleotides / Q000737:chemistry; D010084:Oxidation-Reduction
D004220:Disulfides; D008024:Ligands; D009841:Oligonucleotides; D004247:DNA; D005978:Glutathione; D006690:Bisbenzimidazole