4IS0:
reference: Structural insights into omega-class glutathione transferases: a snapshot of enzyme reduction and identification of a non-catalytic ligandin site., Brock J, Board PG, Oakley AJ, PLoS One. 2013 Apr 9;8(4):e60324. doi: 10.1371/journal.pone.0060324. Print 2013. PMID: 23593192

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