Regioselective cleavage of di- and poly-ribonucleotides induced by cyclodextrins (cyclomalto-oligosaccharides)
作者:Makoto Komiyama
DOI:10.1016/0008-6215(89)85169-9
日期:1989.10
Abstract Cyclodextrins (cyclomalto-oligosaccharides, CDs) induce regioselective cleavage of the 3′,5′-phosphodiester linkages in di- and poly-ribonucleotides at pH 11.08 and 50°. 0.15 m Cyclomaltohexaose (α-CD) mediates the cleavage of CpA, CpC, CpG, and CpU to give 96–97% of cytidine 3′-phosphate together with adenosine, cytidine, guanosine, and uridine, respectively. In the absence of α-CD, 50–52%
摘要环糊精(环麦芽寡糖,CD)在pH 11.08和50°下诱导二和多核糖核苷酸中3',5'-磷酸二酯键的区域选择性切割。0.15 m的环己二糖(α-CD)介导CpA,CpC,CpG和CpU的裂解,分别产生96–97%的胞苷3'-磷酸以及腺苷,胞苷,鸟苷和尿苷。在没有α-CD的情况下,形成了50-52%的胞苷2'-磷酸副产物。α-CD还促进了ApA和ApC的腺苷3'-磷酸的形成,GpG的鸟苷3'-磷酸的形成和UpU的尿苷3'-磷酸的形成。相反,β-CD和γ-CD增强了相应的2'-磷酸盐的形成。还实现了poly [A],poly [C],poly [G]和poly [U]的区域选择性切割。