作者:Tomohisa Moriguchi、Takeshi Wada、Mitsuo Sekine
DOI:10.1002/ejoc.200200294
日期:2003.6
This paper deals with the synthesis and properties of oligodeoxynucleotides of a Dickerson−Drew sequence, d(CGCGAATTCGCG), in which one of the four cytosine bases has been replaced with an N-phosphorylated or N-diethylphosphorylated cytosine base in order to study the effect of the N-phosphoryl or N-diethoxyphosphoryl group on their structural property and hybridization affinity. The CD spectra of
本文涉及 Dickerson-Drew 序列 d(CGCGAATTCGCG) 的寡脱氧核苷酸的合成和性质,其中四个胞嘧啶碱基之一已被 N-磷酸化或 N-二乙基磷酸化胞嘧啶碱基取代,以研究其影响N-磷酰基或 N-二乙氧基磷酰基对其结构特性和杂交亲和力的影响。这些自互补双链体的 CD 光谱显示出典型的 B DNA 型形状,变化很小。相比之下,从 Tm 实验中发现,N-磷酰基团通过空间位阻和电子排斥显着破坏了 DNA 双链体的稳定性。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)