1URI:
reference: X-ray analysis and spectroscopic characterization of M121Q azurin. A copper site model for stellacyanin., Romero A, Hoitink CW, Nar H, Huber R, Messerschmidt A, Canters GW, J Mol Biol 1993 Feb 20;229(4):1007-21. PMID: 8383207

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