3QZR:
reference: Crystal Structures of Enterovirus 71 3C Protease Complexed with Rupintrivir Reveal the Roles of the Catalytically Important Residues., Wang J, Fan T, Yao X, Wu Z, Guo L, Lei X, Wang J, Wang M, Jin Q, Cui S, J Virol. 2011 Aug 3. PMID: 21813612

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