2109
All four complexes contain CREB and are bound to the cAMP response element ( CRE ) core sequence ( TGACGTCA ), as indicated by antibody and oligonucleotide competition experiments .
 ( protein: CREB, None) , ( DNA: CRE, None) , ( DNA: cAMP response element, None) , ( DNA: cAMP response element ( CRE ) core sequence, 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: CREB, None) , ( DNA: CRE, None) , ( DNA: cAMP response element, None) , ( DNA: cAMP response element ( CRE ) core sequence, None) 