405
Moreover, both the mutant nm23-H2His protein and truncated nm23-H2 protein containing N-terminal (1-60) peptide , which do not have NDP kinase activity , also inhibited erythroid differentiation of HEL cells .
 ( protein: mutant nm23-H2His protein, None) , ( protein: N-terminal (1-60) peptide, None) , ( protein: NDP kinase, None) , ( cell line: HEL cells, None) , ( protein: truncated nm23-H2 protein, 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: mutant nm23-H2His protein, None) , ( protein: N-terminal (1-60) peptide, None) , ( protein: NDP kinase, None) , ( cell line: HEL cells, None) , ( protein: truncated nm23-H2 protein, None) 