2048
Antibodies against the NF-kappa B and Rel proteins and UV cross-linking studies revealed the presence of c-Rel and p65 and the absence of p50 in the TF complex and further showed that c-Rel/ p65 heterodimers selectively bound to the TF kappa B-like site .
 ( protein: p65, None) , ( protein: NF-kappa B, None) , ( protein: TF, None) , ( protein: c-Rel, None) , ( protein: p50, None) , ( protein: c-Rel/ p65 heterodimers, None) , ( protein: TF, None) , ( DNA: TF kappa B-like site, None) , ( protein: p65, None) , ( protein: TF complex, 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: p65, None) , ( protein: NF-kappa B, None) , ( protein: TF, None) , ( protein: c-Rel, None) , ( protein: p50, None) , ( protein: c-Rel/ p65 heterodimers, None) , ( protein: TF, None) , ( DNA: TF kappa B-like site, None) , ( protein: p65, None) , ( protein: TF complex, None) 