Synthesis and hybridization properties of oligonucleotides containing (2S,3R)-9-(2,3,4-trihydroxybutyl)adenine
Yoshihito Ueno1, Shinji Ishihara, Yasutomo Ito
1Department of Biomolecular Science, Faculty of Engineering, and Center for Emerging Infectious Diseases, Gifu University, Yanagido, Gifu, Japan.
Abstract:
The synthesis and properties of oligonucleotides (ONs) containing 9-(2,3,4-trihydroxybutyl)adenine, A(C2) and A(C3), are described. The ON containing A(C2) involves the 3'-->4' and 3-->5' phosphodiester linkages in the strand, whereas that containing A(C3) possesses the 3'-->4' and 2'-->5' phosphodiester linkages. It was found that incorporation of the analogs, A(C2) or A(C3), into ONs significantly reduces the thermal and thermodynamic stabilities of the ON/DNA duplexes, but does not largely decrease the thermal and thermodynamic stabilities of the ON/RNA duplexes as compared with the case of the ON/DNA duplexes. It was revealed that the base recognition ability of A(C2) is greater than that of A(C3) in the ON/RNA duplexes.
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