7548
The results of supershift analysis using specific antibodies against transcription factors suggested that both binding complexes contained the NF-kappaB components p50 and p65 , and did not contain other NF-kappaB proteins ( p52 , c-Rel , Rel B ), AP-1 proteins ( c-Fos , C-Jun ), CREB or C/EBPbeta ( NF-IL6 ).
 ( protein: p50, None) , ( protein: NF-IL6, None) , ( protein: AP-1 proteins, None) , ( protein: c-Rel, None) , ( protein: p65, None) , ( protein: NF-kappaB, None) , ( protein: NF-kappaB, None) , ( protein: CREB, None) , ( protein: C/EBPbeta, None) , ( protein: transcription factors, None) , ( protein: Rel B, None) , ( protein: p52, None) , ( protein: NF-kappaB components, None) , ( protein: C-Jun, None) , ( protein: c-Fos, None) , ( protein: NF-kappaB proteins, 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: p50, None) , ( protein: NF-IL6, None) , ( protein: AP-1 proteins, None) , ( protein: c-Rel, None) , ( protein: p65, None) , ( protein: NF-kappaB, None) , ( protein: NF-kappaB, None) , ( protein: CREB, None) , ( protein: C/EBPbeta, None) , ( protein: transcription factors, None) , ( protein: Rel B, None) , ( protein: p52, None) , ( protein: NF-kappaB components, None) , ( protein: C-Jun, None) , ( protein: c-Fos, None) , ( protein: NF-kappaB proteins, None) 