1374
We have detected a specific nuclear protein complex that binds to the element and show that NF-kappa B1 ( p50 ) is a part of this complex.
 ( protein: nuclear protein complex, None) , ( protein: NF-kappa B1, None) , ( protein: p50, 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: nuclear protein complex, None) , ( protein: NF-kappa B1, None) , ( protein: p50, None) 