4GP8:
reference: Ligand Access to the Active Site in Thermus thermophilus ba3 and Bovine Heart aa3 Cytochrome Oxidases., McDonald WJ, Funatogawa C, Li Y, Szundi I, Chen Y, Fee JA, Stout CD, Einarsdottir O, Biochemistry. 2013 Jan 2. PMID: 23282175

This OCA Structure page
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