3G2Z:
reference: Molecular docking and ligand specificity in fragment-based inhibitor discovery., Chen Y, Shoichet BK, Nat Chem Biol. 2009 May;5(5):358-64. Epub 2009 Mar 22. PMID: 19305397

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