401
Although all nm23 proteins contain nucleoside diphosphate (NDP) kinase activity , it has not been established that the enzyme activity mediated the various functions of nm23 proteins .
 ( protein: nucleoside diphosphate (NDP) kinase, None) , ( protein: nm23 proteins, None) , ( protein: nm23 proteins, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( protein: nucleoside diphosphate (NDP) kinase, None) , ( protein: nm23 proteins, None) , ( protein: nm23 proteins, None) 