title: Divide and conquer: the E2 active site.
authors.forename: Puck
authors.initials: P
authors.lastname: Knipscheer
authors.forename: Titia K
authors.initials: TK
authors.lastname: Sixma
mesh_terms: D001665:Binding Sites; D002384:Catalysis; D004798:Enzymes / Q000378:metabolism*; D007700:Kinetics; D025842:SUMO-1 Protein / Q000378:metabolism*; D025801:Ubiquitin / Q000378:metabolism*
chemical_list: D004798:Enzymes; D025842:SUMO-1 Protein; D025801:Ubiquitin