4M70:
reference: Structural Basis for the Interaction between the Potato Virus X Resistance Protein (Rx) and Its Cofactor Ran GTPase-activating Protein 2 (RanGAP2)., Hao W, Collier SM, Moffett P, Chai J, J Biol Chem. 2013 Dec 13;288(50):35868-76. doi: 10.1074/jbc.M113.517417. Epub, 2013 Nov 5. PMID: 24194517

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