11753
Neither a mutation in I kappaB alpha nor a mutation in p50 or relA , the two major subunits of NF-kappaB in this cell line, accounts for this phosphorylation defect .
 ( protein: relA, None) , ( protein: I kappaB, None) , ( protein: NF-kappaB, None) , ( protein: I kappaB alpha, 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: relA, None) , ( protein: I kappaB, None) , ( protein: NF-kappaB, None) , ( protein: I kappaB alpha, None) , ( protein: p50, None) 