1QCR:
reference: Crystal structure of the cytochrome bc1 complex from bovine heart mitochondria., Xia D, Yu CA, Kim H, Xia JZ, Kachurin AM, Zhang L, Yu L, Deisenhofer J, Science 1997 Jul 4;277(5322):60-6. PMID: 9204897

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