1X3N:
reference: Crystal Structures of ADP and AMPPNP-bound Propionate Kinase (TdcD) from Salmonella typhimurium: Comparison with Members of Acetate and Sugar Kinase/Heat Shock Cognate 70/Actin Superfamily., Simanshu DK, Savithri HS, Murthy MR, J Mol Biol 2005 Sep 30;352(4):876-92. PMID: 16139298

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