1JB1:
reference: X-ray structure of HPr kinase: a bacterial protein kinase with a P-loop nucleotide-binding domain., Fieulaine S, Morera S, Poncet S, Monedero V, Gueguen-Chaignon V, Galinier A, Janin J, Deutscher J, Nessler S, EMBO J 2001 Aug 1;20(15):3917-27. PMID: 11483495

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