>2c2v_I mol:protein length:142 Ubiquitin-conjugating enzyme E2 variant 1 TTGVKVPRNFRLLEELEEGQKGVGDGTVSWGLEDDEDMTLTRWTGMILGPPRTIYENRI YSLKIECGPKYPEAPPFVRFVTKINMNGVNSSNGVVDPRAISVLAKWQNSYSIKVVLQE LRRLMMSKENMKLPQPPEGQCYSN