5MUA:
reference: Family of Papain-Like Fungal Chimerolectins with Distinct Ca2+-Dependent Activation Mechanism., Cordara G, Manna D, Krengel U, Biochemistry. 2017 Aug 22. doi: 10.1021/acs.biochem.7b00317. PMID: 28665586

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).