4IYP:
reference: Structural basis of protein phosphatase 2A stable latency., Jiang L, Stanevich V, Satyshur KA, Kong M, Watkins GR, Wadzinski BE, Sengupta R, Xing Y, Nat Commun. 2013;4:1699. doi: 10.1038/ncomms2663. PMID: 23591866

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