5ZC1:
reference: Structural basis of the cystein protease inhibitor Clonorchis sinensis Stefin-1., Park SY, Jeong MS, Park SA, Ha SC, Na BK, Jang SB, Biochem Biophys Res Commun. 2018 Mar 25;498(1):9-17. doi:, 10.1016/j.bbrc.2018.02.196. Epub 2018 Feb 28. PMID: 29499196

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