1MBM:
reference: Structure of arterivirus nsp4. The smallest chymotrypsin-like proteinase with an alpha/beta C-terminal extension and alternate conformations of the oxyanion hole., Barrette-Ng IH, Ng KK, Mark BL, Van Aken D, Cherney MM, Garen C, Kolodenko Y, Gorbalenya AE, Snijder EJ, James MN, J Biol Chem 2002 Oct 18;277(42):39960-6. Epub 2002 Aug 5. PMID: 12163505

This OCA Structure page
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