4GQZ:
reference: Structure of the periplasmic copper-binding protein CueP from Salmonella enterica serovar Typhimurium., Yoon BY, Kim YH, Kim N, Yun BY, Kim JS, Lee JH, Cho HS, Lee K, Ha NC, Acta Crystallogr D Biol Crystallogr. 2013 Oct;69(Pt 10):1867-75. doi:, 10.1107/S090744491301531X. Epub 2013 Sep 20. PMID: 24100307

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