>3von_k mol:protein length:138 Ubiquitin-conjugating enzyme E2 variant 2 GVKVPRNFRLLEELEEGQKGVGDGTVSWGLEDDEDMTLTRWTGMIIGPPRTNYENRIYS LKVECGPKYPEAPPSVRFVTKINMNGINNSSGMVDARSIPVLAKWQNSYSIKVVLQELR RLMMSKENMKLPQPPEGQTY