Protocol exploits differences in electrophoretic mobility through a nondenaturing polyacrylamide gel between a rapidly migrating target DNA and a more slowly migrating DNA-protein complex. - [Read Gel Retardation Assays for DNA-binding Proteins Protocol]
Protocol describes a nondenaturing immunoprecipitation (IP) for mammalian cells. Prefer to use denaturing IPs to recover labeled proteins from pulse-chase experiments. However, the nondenaturing protocol is useful when one wishes to separate soluble from insoluble proteins, or when the antibody being used recognizes a native epitope. - [Read Nondenaturing Protein Immunoprecipitation from Mammalian Cells Protocol]