1YOH: Cobalt Myoglobin (Met)
reference: High resolution crystal structures of the deoxy, oxy, and aquomet forms of cobalt myoglobin., Brucker EA, Olson JS, Phillips GN Jr, Dou Y, Ikeda-Saito M, J Biol Chem 1996 Oct 11;271(41):25419-22. PMID: 8810310

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