ANALYTICAL TECHNIQUE FOR OLIGONUCLEOTIDE ANALOGS

摘要

A method for separating a mixture of 5'-phosphorothioate mononucleotides, a mixture of 5'-phosphorothioate oligonucleotides, or a mixture of both 5'-phosphorothioate mononucleotides and 5'-phosphorothioate oligonucleotides comprising electro- phoresis through a gel of at least 12% polymerized linear acrylamide containing at least 50% formamide or other denaturing organic solvent. This method can resolve phosphorothioate oligonucleotides differing by only a single base. Samples of less than 1 nanogram in microliter volumes can be conveniently handled.