>sp|A3PA97|NDK_PROM0 Nucleoside diphosphate kinase OS=Prochlorococcus marinus GN=ndk MTKERTFIAIKPDGVQRGYVSEIIGRFEKKGFKLVGLKQLIPSKELAQNHYGVHRERPFF GDLVDFISSGPVVAMVWEGEGVILSARKLIGSTKPLEAEPGTIRGDLAIDIGRNIIHGSD GEDTAKFEIDLWFNEEELCEWETSDLKWRSEN