14591
Serum response factor ( SRF ) binds to a site adjacent to the NF-kappa B site in the IL-2R enhancer , and both sites together have strong transcriptional activity specifically in T cells .
 ( DNA: NF-kappa B site, None) , ( cell type: T cells, None) , ( protein: Serum response factor, None) , ( protein: SRF, None) , ( DNA: IL-2R enhancer, 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:
 ( DNA: NF-kappa B site, None) , ( cell type: T cells, None) , ( protein: Serum response factor, None) , ( protein: SRF, None) , ( DNA: IL-2R enhancer, None) 