3668
Site-directed mutagenesis of these cis elements demonstrated that Cp activity is highly dependent on the presence of a properly positioned CCAAT box , with the dependence on the distal CCAAT box apparent only when the proximal CCAAT box was deleted or mutated.
 ( DNA: cis elements, None) , ( DNA: CCAAT box, None) , ( DNA: CCAAT box, None) , ( DNA: proximal CCAAT box, None) , ( DNA: Cp, None) , ( DNA: CCAAT box, None) , ( DNA: distal CCAAT box, 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: cis elements, None) , ( DNA: CCAAT box, None) , ( DNA: CCAAT box, None) , ( DNA: proximal CCAAT box, None) , ( DNA: Cp, None) , ( DNA: CCAAT box, None) , ( DNA: distal CCAAT box, None) 