2131
This alternative pathway of Tat activation is mediated by the viral enhancer , a kappa B domain capable of binding the prototypical form of the transcription factor nuclear factor kappa B ( NF-kappa B ) present in many cell types, including T lymphocytes .
 ( protein: Tat, None) , ( protein: NF-kappa B, None) , ( protein: transcription factor, None) , ( DNA: viral enhancer, None) , ( cell type: T lymphocytes, 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: Tat, None) , ( protein: NF-kappa B, None) , ( protein: transcription factor, None) , ( DNA: viral enhancer, None) , ( cell type: T lymphocytes, None) 