2045
In vitro binding studies demonstrated that the TF site bound translated c- Rel and p65 homodimers but not p50/p65 heterodimers or p50 homodimers .
 ( protein: p50/p65 heterodimers, None) , ( DNA: TF site, None) , ( protein: Rel, None) , ( protein: TF, None) , ( protein: p50 homodimers, 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/p65 heterodimers, None) , ( DNA: TF site, None) , ( protein: Rel, None) , ( protein: TF, None) , ( protein: p50 homodimers, None) 