DNA-immobilized microspheres and a process for purifying a DNA-transcription-controlling factor using the same

摘要

There are disclosed a DNA-immobilized microsphere comprising DNA chains having base sequences which bind a specific protein specifically, and a carrier having a particle size of not more than 50 mu m and not less than 0.01 mu m which does not adsorb any protein, said carrier and said DNA chains being bound to each other by a chemical bond, and a process for purifying a protein using said microsphere.