>4NRI_1|Chain A|Ubiquitin-conjugating enzyme E2 variant 2|Homo sapiens (9606) GPLGSPEFGVKVPRNFRLLEELEEGQKGVGDGTVSWGLEDDEDMTLTRWTGMIIGPPRTNYENRIYSLKVECGPKYPEAPPSVRFVTKINMNGINNSSGMVDARSIPVLAKWQNSYSIKVVLQELRRLMMSKENMKLPQPPEGQTYNN >4NRI_2|Chain B|Ubiquitin-conjugating enzyme E2 N|Homo sapiens (9606) GPLGSPEFGLPRRIIKETQRLLAEPVPGIKAEPDESNARYFHVVIAGPQDSPFEGGTFKLELFLPEEYPMAAPKVRFMTKIYHPNVDKLGRICLDILKDKWSPALQIRTVLLSIQALLSAPNPDDPLGNDVAEQWKTNEAQAIETARAWTRLYAMN