4OW0:
reference: X-ray Structural and Biological Evaluation of a Series of Potent and Highly Selective Inhibitors of Human Coronavirus Papain-like Proteases., Baez-Santos YM, Barraza SJ, Wilson MW, Agius MP, Mielech AM, Davis NM, Baker SC, Larsen SD, Mesecar AD, J Med Chem. 2014 Mar 27;57(6):2393-412. doi: 10.1021/jm401712t. Epub 2014 Mar 14. PMID: 24568342

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