4CT0:
reference: Interaction of Circadian Clock Proteins CRY1 and PER2 Is Modulated by Zinc Binding and Disulfide Bond Formation., Schmalen I, Reischl S, Wallach T, Klemz R, Grudziecki A, Prabu JR, Benda C, Kramer A, Wolf E, Cell. 2014 May 22;157(5):1203-15. doi: 10.1016/j.cell.2014.03.057. PMID: 24855952

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