5KKG:
reference: Reconstructed ancestral enzymes reveal that negative selection drove the evolution of substrate specificity in ADP-dependent kinases., Castro-Fernandez V, Herrera-Morande A, Zamora R, Merino F, Gonzalez-Ordenes F, Padilla-Salinas F, Pereira HM, Brandao-Neto J, Garratt RC, Guixe V, J Biol Chem. 2017 Dec 22;292(51):21218. doi: 10.1074/jbc.AAC117.001147. PMID: 29273585

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