3CH2:
reference: Structural Insights into the Protease-like Antigen Plasmodium falciparum SERA5 and Its Noncanonical Active-Site Serine., Hodder AN, Malby RL, Clarke OB, Fairlie WD, Colman PM, Crabb BS, Smith BJ, J Mol Biol. 2009 Jul 8. PMID: 19591843

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