2AZ3:
reference: Structure of a halophilic nucleoside diphosphate kinase from Halobacterium salinarum., Besir H, Zeth K, Bracher A, Heider U, Ishibashi M, Tokunaga M, Oesterhelt D, FEBS Lett 2005 Dec 5;579(29):6595-600. Epub 2005 Nov 9. PMID: 16293253

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