3PZF:
reference: Crystal structure of native Anopheles gambiae serpin-2, a negative regulator of melanization in mosquitoes., An C, Lovell S, Kanost MR, Battaile KP, Michel K, Proteins. 2011 Feb 3. doi: 10.1002/prot.23002. PMID: 21465556

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