2579
Deletion analyses of the pCD41 ORF-A and the use of promoter constructs further mapped an internal functional promoter within the pCD41 sequence that can direct the synthesis of the trans-activating protein .
 ( protein: trans-activating protein, None) , ( DNA: promoter constructs, None) , ( protein: ORF-A, None) , ( DNA: pCD41, None) , ( DNA: pCD41, 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: trans-activating protein, None) , ( DNA: promoter constructs, None) , ( protein: ORF-A, None) , ( DNA: pCD41, None) , ( DNA: pCD41, None) 