5I4H:
reference: Caught in the act: the crystal structure of cleaved cathepsin L bound to the active site of Cathepsin L., Sosnowski P, Turk D, FEBS Lett. 2016 Apr;590(8):1253-61. doi: 10.1002/1873-3468.12140. Epub 2016 Mar, 30. PMID: 26992470

This OCA Structure page
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