3WC8:
reference: Formation of Oligomeric Cytochrome c during Folding by Intermolecular Hydrophobic Interaction between N- and C-Terminal alpha-Helices., Parui PP, Deshpande MS, Nagao S, Kamikubo H, Komori H, Higuchi Y, Kataoka M, Hirota S, Biochemistry. 2013 Dec 3;52(48):8732-44. doi: 10.1021/bi400986g. Epub 2013 Nov, 20. PMID: 24206001

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