2CB2:
reference: X-ray Structure of a self-compartmentalizing sulfur cycle metalloenzyme., Urich T, Gomes CM, Kletzin A, Frazao C, Science. 2006 Feb 17;311(5763):996-1000. PMID: 16484493

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