Spin-Labeled Oligonucleotides Site Specifically Labeled at the Internucleotide Linkage. Separation of Stereoisomeric Probes and EPR Spectroscopical Detection of Hybrid Formation in Solution

Abstract
Described herein is the synthesis, separation of stereoisomers, hybridization, and EPR behavior of spin-labeled oligonucleotides site specifically labeled at the internucleotide linkage with 4-amino-TEMPO. The results obtained indicate that the spin-labeling method will provide a DNA probe useful for detecting hybrid formation with the complementary segment in solution.