Preparation of Spin-Labeled-2-Amino-dA, dA, dC and 5-Methyl-dC Phosphoramidites for the Automatic Synthesis of EPR Active Oligonucleotides
作者:Cesare Giordano、Federica Fratini、Donato Attanasio、Luciano Cellai
DOI:10.1055/s-2001-12355
日期:——
2,2,6,6-Tetramethyl-1-piperidinyloxy free radical (TEMPO) labeled phosphoramidites of 2-amino-dA, dA, dC and 5-methyl-dC were synthesized and used for the automatic synthesis of mono-labeled oligodeoxynucleotides (ODNs), which proved active to EPR. It is now possible to insert a paramagnetic probe into nucleic acids in a site- and type-specific manner. The combination of this synthetic approach with EPR spectroscopy can be exploited for performing studies on dynamics and local structural modifications in nucleic acids.
合成了2,2,6,6-四甲基-1-哌啶氧自由基(TEMPO)标记的2-氨基-dA、dA、dC和5-甲基-dC的磷酰胺类化合物,并用于单标记寡脱氧核苷酸(ODNs)的自动合成,这些化合物对电子顺磁共振(EPR)表现出活性。现在可以以特定的位置和类型将顺磁探针插入核酸中。这种合成方法与EPR光谱的结合可以用于研究核酸中的动态变化和局部结构修饰。