4P2L:
reference: Enzyme structure captures four cysteines aligned for disulfide relay., Gat Y, Vardi-Kilshtain A, Grossman I, Major DT, Fass D, Protein Sci. 2014 Jun 3. doi: 10.1002/pro.2496. PMID: 24888638

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