5Z25:
reference: Construction of a Triangle-Shaped Trimer and a Tetrahedral Structure Using an alpha-Helix-Inserted Circular Permutant of Cytochrome c(5)(5)(5)., Oda A, Nagao S, Yamanaka M, Ueda I, Watanabe H, Uchihashi T, Shibata N, Higuchi Y, Hirota S, Chem Asian J. 2018 Feb 26. doi: 10.1002/asia.201800252. PMID: 29484831

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