1PD3:
reference: Crystal structure of the M1 protein-binding domain of the influenza A virus nuclear export protein (NEP/NS2)., Akarsu H, Burmeister WP, Petosa C, Petit I, Muller CW, Ruigrok RW, Baudin F, EMBO J 2003 Sep 15;22(18):4646-55. PMID: 12970177

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