>2k28_A mol:protein length:60 E3 SUMO-protein ligase CBX4 GSEHVFAVESIEKKRIRKGRVEYLVKWRGWSPKYNTWEPEENILDPRLLIAFQNRERQE Q >2k28_A mol:protein length:60 E3 SUMO-protein ligase CBX4 GSEHVFAVESIEKKRIRKGRVEYLVKWRGWSPKYNTWEPEENILDPRLLIAFQNRERQE Q