>4v3k_A mol:protein length:146 UBIQUITIN-CONJUGATING ENZYME E2 D2ALKRIHKELNDLARDPPAQCRAGPVGDDMFHWQATIMGPNDSPYQGGVFFLTIHFPTDYPFKPPKVAFTTRIYHPNINSNGSIKLDILRSQWSPALTISKVLLSICSLLCDPNPDDPLVPEIARIYKTDREKYNRIAREWTQKYAM