4RH4:
reference: Zinc-substituted pseudoazurin solved by S/Zn-SAD phasing., Gessmann R, Papadovasilaki M, Drougkas E, Petratos K, Acta Crystallogr F Struct Biol Commun. 2015 Jan 1;71(Pt 1):19-23. doi:, 10.1107/S2053230X14025552. Epub 2015 Jan 1. PMID: 25615962

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