5277
Antibodies against CRE -binding (CREB) protein but not against c-Fos or c-Jun were able to supershift the DNA-protein complex , identifying the nature of the transcription factor which binds to ZII as a member of the CREB family of proteins .
 ( protein: DNA-protein complex, None) , ( DNA: CRE, None) , ( protein: c-Fos, None) , ( protein: transcription factor, None) , ( protein: CRE -binding (CREB) protein, None) , ( protein: CREB family of proteins, None) , ( DNA: ZII, None) , ( protein: c-Jun, 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: DNA-protein complex, None) , ( DNA: CRE, None) , ( protein: c-Fos, None) , ( protein: transcription factor, None) , ( protein: CRE -binding (CREB) protein, None) , ( protein: CREB family of proteins, None) , ( DNA: ZII, None) , ( protein: c-Jun, None) 