3LXU:
reference: Hybrid molecular structure of the giant protease tripeptidyl peptidase II., Chuang CK, Rockel B, Seyit G, Walian PJ, Schonegge AM, Peters J, Zwart PH, Baumeister W, Jap BK, Nat Struct Mol Biol. 2010 Aug;17(8):990-6. Epub 2010 Aug 1. PMID: 20676100

This OCA Structure page
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