4X2T:
reference: X-ray crystal structures of an orally available aminopeptidase inhibitor, Tosedostat, bound to anti-malarial drug targets PfA-M1 and PfA-M17., Drinkwater N, Bamert RS, Kannan Sivaraman K, Paiardini A, McGowan S, Proteins. 2015 Feb 2. doi: 10.1002/prot.24771. PMID: 25645579

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