3ERW:
reference: Structure and functional properties of Bacillus subtilis endospore biogenesis factor StoA., Crow A, Liu Y, Moller MC, Le Brun NE, Hederstedt L, J Biol Chem. 2009 Apr 10;284(15):10056-66. Epub 2009 Jan 13. PMID: 19144642

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