RANBP2 of the nuclear pore complex SUMOylates TOP2A with SUMO1 (Dawlaty et al. 2008, Impens et al. 2014). SUMOylated TOP2A is localized to centromeres. As inferred from mouse homologs, SUMOylation of TOP2A by RANBP2 is required for resolution of sister centromeres (Dawlaty et al. 2008).
van Deursen, JM
SUMO transferase activity of Nuclear Pore Complex (NPC) [nuclear envelope]