1V2Z:
reference: Crystal structure of the C-terminal clock-oscillator domain of the cyanobacterial KaiA protein., Uzumaki T, Fujita M, Nakatsu T, Hayashi F, Shibata H, Itoh N, Kato H, Ishiura M, Nat Struct Mol Biol 2004 Jul;11(7):623-31. Epub 2004 May 30. PMID: 15170179

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