1C6S:
reference: Solution structure of cytochrome c6 from the thermophilic cyanobacterium Synechococcus elongatus., Beissinger M, Sticht H, Sutter M, Ejchart A, Haehnel W, Rosch P, EMBO J 1998 Jan 2;17(1):27-36. PMID: 9427738

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