A New Method for the Purification of DNA‐Binding Proteins with Sequence Specificity

Abstract
A technique is described for a rapid and efficient isolation and purification of proteins binding to defined DNA sequences. Cloned double-stranded DNA was covalently coupled to m-aminobenzyloximethylcellulose to purify proteins which recognize and bind to specific sequences on the DNA. The purification of 2 DNA-binding proteins from Drosophila melanogaster is demonstrated using the respective cloned DNA sequences.