1AR1:
reference: Structure at 2.7 A resolution of the Paracoccus denitrificans two-subunit cytochrome c oxidase complexed with an antibody FV fragment., Ostermeier C, Harrenga A, Ermler U, Michel H, Proc Natl Acad Sci U S A 1997 Sep 30;94(20):10547-53. PMID: 9380672

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