3KYF:
reference: Structure of PP4397 reveals the molecular basis for different c-di-GMP binding modes by Pilz domain proteins., Ko J, Ryu KS, Kim H, Shin JS, Lee JO, Cheong C, Choi BS, J Mol Biol. 2010 Apr 23;398(1):97-110. Epub 2010 Mar 10. PMID: 20226196

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