Figure EV4. kDNA decatenation assays were measured using the endogenous TOP2A purified from MCF‐7/ADR cells.
kDNA was used as the TOP2A substrate. TOP2A could retain catalytic activity in vitro and catalyzed kDNA decatenation in a concentration‐ and time‐dependent manner. Linear kDNA was used as the negative control, and decatenated kDNA was used as the positive control. The enzyme concentration and reaction time were indicated.Source data are available online for this figure.