Nucleoside diphosphate kinase I MEQTFIMIKPDGVQRGLVGEIISRFEKKGFSLKALKFVNVDRPFAEKHYADLSAKPFFNGLVEYIVSGPVVAMVWEGKGVVATGRKLIGATNPLASEPGTIRGDFAIDIGRNVIHGSDAVDSATKEIALWFPDGVVHWQSSLHSWIYE NDPK1 148 Nucleoside diphosphate kinase 1 Major role in the synthesis of nucleoside triphosphates other than ATP. The ATP gamma phosphate is transferred to the NDP beta phosphate via a ping-pong mechanism, using a phosphorylated active-site intermediate. NDK1_SPIOL