6IEJ:
reference: Structural basis of phosphatidylcholine recognition by the C2-domain of cytosolic phospholipase A2alpha., Hirano Y, Gao YG, Stephenson DJ, Vu NT, Malinina L, Simanshu DK, Chalfant CE, Patel DJ, Brown RE, Elife. 2019 May 3;8. pii: 44760. doi: 10.7554/eLife.44760. PMID: 31050338

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