6969
Composite elements are regulatory modules of promoters or enhancers that consist of binding sites of two different but synergizing transcription factors .
 ( DNA: promoters, None) , ( DNA: regulatory modules, None) , ( DNA: Composite elements, None) , ( DNA: enhancers, None) , ( protein: transcription factors, 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: promoters, None) , ( DNA: regulatory modules, None) , ( DNA: Composite elements, None) , ( DNA: enhancers, None) , ( protein: transcription factors, None) 