FIG. 9.
PSF immunoprecipitates with Sin3A. Nuclear extracts prepared from HeLa cells were immunoprecipitated with anti-Sin3A antibody or preimmune serum, and the samples were then analyzed by Western blotting with anti-PSF antibody. N.E., nuclear extract; Sin3A IP, immunoprecipitation with Sin3A antibody; Control IP, immunoprecipitation with preimmune serum.