1MNY:
reference: Dimethyl propionate ester heme-containing cytochrome b5: structure and stability., Banci L, Bertini I, Branchini BR, Hajieva P, Spyroulias GA, Turano P, J Biol Inorg Chem 2001 Jun;6(5-6):490-503. PMID: 11472013

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