6802
This is the first study to demonstrate activation of CREB /ATF and AP-1 transcription factors by PGN or by any other component of Gram-positive bacteria .
 ( protein: AP-1, None) , ( protein: CREB, None) , ( protein: AP-1 transcription factors, None) , ( protein: CREB /ATF, 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:
 ( protein: AP-1, None) , ( protein: CREB, None) , ( protein: AP-1 transcription factors, None) , ( protein: CREB /ATF, None) , ( protein: transcription factors, None) 