Non-standard nucleobases implementing the isocytidine and isoguanosine hydrogen bonding patterns
申请人:——
公开号:US07741294B1
公开(公告)日:2010-06-22
This invention provides compositions of matter that, when incorporated into an oligonucleotide, present to a complementary strand in a Watson-Crick pairing geometry a pattern of hydrogen bonds that is different from the pattern presented by adenine, guanine, cytosine, and thymine. Most specifically, this invention discloses and claims compositions of matter that present the same hydrogen bonding patterns as the isocytidine and isoguanosine nucleobases, but do not have unfavorable tautomeric forms, do not become disassociated from their sugar, and do not make major groove interactions, as much, as easily, or as strongly as isocytidine and isoguanosine.
这项发明提供了物质组合,当纳入寡核苷酸时,向沃森-克里克配对几何结构中的互补链呈现一种氢键模式,该模式与腺嘌呤、鸟嘌呤、胞嘧啶和胸腺嘧啶呈现的模式不同。更具体地说,该发明揭示并声明了一种物质组合,其呈现与异胞嘧啶和异鸟嘌呤核碱基相同的氢键结合模式,但不具有不利的互变异构形式,不会从其糖中解离,并且不会像异胞嘧啶和异鸟嘌呤那样轻易地或强烈地进行主沟相互作用。