5D1F:
reference: Structural Basis of Reversible Phosphorylation by Maize Pyruvate Orthophosphate Dikinase Regulatory Protein., Jiang L, Chen YB, Zheng J, Chen Z, Liu Y, Tao Y, Wu W, Chen Z, Wang BC, Plant Physiol. 2016 Feb;170(2):732-41. doi: 10.1104/pp.15.01709. Epub 2015 Nov, 30. PMID: 26620526

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