>sp|P51965-2|UB2E1_HUMAN Ubiquitin-conjugating enzyme E2 E1 OS=Homo sapiens GN=UBE2E1 MKEVGRPREVRGRPGKSRIQKELADITLDPPPNCSAGPKGDNIYEWRSTILGPPGSVYEG GVFFLDITFTPEYPFKPPKVTFRTRIYHCNINSQGVICLDILKDNWSPALTISKVLLSIC SLLTDCNPADPLVGSIATQYMTNRAEHDRMARQWTKRYAT