8560
Members of the cyclic adenosine monophosphate ( cAMP ) response element binding (CREB)/activating transcription factor 1 ( ATF-1 ) family of transcription factors bind three 21-bp repeats ( Tax-responsive element-1 , or TRE-1 ) within the viral promoter and are important for basal and Tax-mediated transcription .
 ( DNA: cyclic adenosine monophosphate ( cAMP ) response element, None) , ( DNA: viral promoter, None) , ( protein: transcription factors, None) , ( DNA: 21-bp repeats, None) , ( protein: ATF-1, None) , ( DNA: Tax-responsive element-1, None) , ( protein: cyclic adenosine monophosphate ( cAMP ) response element binding (CREB)/activating transcription factor 1 ( ATF-1 ) family, None) , ( DNA: TRE-1, 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: cyclic adenosine monophosphate ( cAMP ) response element, None) , ( DNA: viral promoter, None) , ( protein: transcription factors, None) , ( DNA: 21-bp repeats, None) , ( protein: ATF-1, None) , ( DNA: Tax-responsive element-1, None) , ( protein: cyclic adenosine monophosphate ( cAMP ) response element binding (CREB)/activating transcription factor 1 ( ATF-1 ) family, None) , ( DNA: TRE-1, None) 