| 2OGW: reference: Structural Analysis of ABC-family Periplasmic Zinc Binding Protein Provides New Insights Into Mechanism of Ligand Uptake and Release., Chandra BR, Yogavel M, Sharma A, J Mol Biol. 2007 Jan 23;. PMID: 17306297 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).