UBC9 (UBE2I) SUMOylates RANGAP1 with SUMO, which targets RANGAP1 to RANBP2 (Schizosaccharomyces pombe)
ubc9 (ube2i) sumoylates rangap1 with sumo, which targets rangap1 to ranbp2 (schizosaccharomyces pombe)