2VRR: Structure Of Sumo Modified Ubc9
reference: Ubc9 sumoylation regulates SUMO target discrimination., Knipscheer P, Flotho A, Klug H, Olsen JV, van Dijk WJ, Fish A, Johnson ES, Mann M, Sixma TK, Pichler A, Mol Cell. 2008 Aug 8;31(3):371-82. PMID: 18691969

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