5WUN:
reference: Structural basis for the regulation of nuclear import of Epstein-Barr virus nuclear antigen 1 (EBNA1) by phosphorylation of the nuclear localization signal., Nakada R, Hirano H, Matsuura Y, Biochem Biophys Res Commun. 2017 Feb 26;484(1):113-117. doi:, 10.1016/j.bbrc.2017.01.063. Epub 2017 Jan 17. PMID: 28104399

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