1WTF:
reference: Identification of Variant Molecules of Bacillus thermoproteolyticus Ferredoxin: Crystal Structure Reveals Bound Coenzyme A and an Unexpected [3Fe-4S] Cluster Associated with a Canonical [4Fe-4S] Ligand Motif(,)., Shirakawa T, Takahashi Y, Wada K, Hirota J, Takao T, Ohmori D, Fukuyama K, Biochemistry 2005 Sep 20;44(37):12402-12410. PMID: 16156653

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