This invention provides methods for purifying nucleic acids, in particular primer extension products such as those obtained in nucleic acid sequencing reactions. The methods involve the use of a primer to which is attached a string of arylboronic acid moieties. After extension of the primer using a polymerase, the primer extension products are complexed with a solid support to which is attached an arylboronic acid complexing moiety. The resulting complex is separated from the reaction mixture, washed, and the primer extension products are dissociated from the solid support. The primer extension products are obtained in a form particularly suitable for loading directly on a capillary electrophoresis apparatus.
本发明提供了一种纯化核酸的方法,特别是用于纳米级核酸测序反应中获得的引物延伸产物。该方法涉及使用一个引物,该引物附有一串芳基
硼酸基团。在使用聚合酶延伸引物后,将引物延伸产物与固定有芳基
硼酸络合基团的固体支持物复合。然后将所得的复合物从反应混合物中分离,清洗,并使引物延伸产物从固体支持物中解离。引物延伸产物以特别适合直接加载在毛细管电泳设备上的形式获得。