1E19:
reference: The 1.5 A resolution crystal structure of the carbamate kinase-like carbamoyl phosphate synthetase from the hyperthermophilic Archaeon pyrococcus furiosus, bound to ADP, confirms that this thermostable enzyme is a carbamate kinase, and provides insight into substrate binding and stability in carbamate kinases., Ramon-Maiques S, Marina A, Uriarte M, Fita I, Rubio V, J Mol Biol 2000 Jun 2;299(2):463-76. PMID: 10860751

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