>5EPL_1|Chains A, B|E3 SUMO-protein ligase CBX4|Homo sapiens (9606) GSEHVFAVESIEKKRIRKGRVEYLVKWRGWSPKYNTWEPEENILDPRLLIAFQNRERQEQ >5EPL_2|Chains C, D|unc3866|Homo sapiens (9606) XFALXX