>sp|Q466D4|NDK_METBF Nucleoside diphosphate kinase OS=Methanosarcina barkeri GN=ndk MEQTYVMVKPDGVQRGLVGEIISRIEKRGLKIVALRMNVISEATAKEHYSEHAAKPFFPG LVGFITSGPSVSMVVEGKDAIRVMRAINGATNPVDAAPGTVRGDFALDVGRNVVHASDSP EAAAREIAIHFKDSEIGNYSRIDEVCLYE