1. Since NDP kinases are not specific for ATP, a more correct terminology would be nucleoside triphosphate:nucleoside diphosphate phosphotransferase
2. Throughout this article it is assumed that actual substrates are Mg-nucleotide complexes, e.g., Mg-ATP
3. Transphosphorylation between Nucleoside Polyphosphates
4. Some reactions of adenosine and inosine phosphates in animal tissues
5. Nucleoside Triphosphate-Nucleoside Diphosphate Transphosphorylase (Nucleoside Diphosphokinase)