1050
In order to investigate the mechanism of the regulation of cdc2 mRNA expression in hematopoietic cells , we isolated the 5'-flanking sequence of the cdc2 gene and found the putative E2F binding site at the position of nucleotides -124 to -117 .
 ( DNA: nucleotides -124 to -117, None) , ( DNA: 5#$%#-flanking sequence, None) , ( DNA: binding site, None) , ( DNA: cdc2 gene, None) , ( cell type: hematopoietic cells, None) , ( RNA: cdc2 mRNA, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( DNA: nucleotides -124 to -117, None) , ( DNA: 5#$%#-flanking sequence, None) , ( DNA: binding site, None) , ( DNA: cdc2 gene, None) , ( cell type: hematopoietic cells, None) , ( RNA: cdc2 mRNA, None) 