pull-down assays with anti-V5 antibody verified that PLK1 directly bound RSF1 (Fig. 1d), indicating that RSF1 is a bona fide PLK1-interacting protein. It is of note that SNF2H is dispensable for the RSF1–PLK1 interaction. Co-imunoprecipitation assay using RSF1 KO HeLa cell extracts rev...