5U7N:
reference: Engineering a bifunctional copper site in the cupredoxin fold by loop-directed mutagenesis., Espinoza-Cara A, Zitare U, Alvarez-Paggi D, Klinke S, Otero LH, Murgida DH, Vila AJ, Chem Sci. 2018 Jun 28;9(32):6692-6702. doi: 10.1039/c8sc01444b. eCollection 2018 , Aug 28. PMID: 30310603

This OCA Structure page
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