>1c4z_D mol:protein length:154 UBIQUITIN CONJUGATING ENZYME E2 MAASRRLMKELEEIRKCGMKNFRNIQVDEANLLTWQGLIVPDNPPYDKGAFRIEINFPA EYPFKPPKITFKTKIYHPNIDEKGQVCLPVISAENWKPATKTDQVIQSLIALVNDPQPE HPLRADLAEEYSKDRKKFCKNAEEFTKKYGEKRPVD