6394
NIK cannot phosphorylate IkappaB -alpha directly, but it appears to be a functionally important subunit, because mutated NIK inhibited stimulus-induced kappaB -dependent transcription more effectively than mutated IKK-alpha or -beta .
 ( protein: IkappaB -alpha, None) , ( protein: NIK, None) , ( protein: NIK, None) , ( protein: IKK-alpha, None) , ( protein: IkappaB, None) , ( protein: -beta, None) , ( protein: kappaB, 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: IkappaB -alpha, None) , ( protein: NIK, None) , ( protein: NIK, None) , ( protein: IKK-alpha, None) , ( protein: IkappaB, None) , ( protein: -beta, None) , ( protein: kappaB, None) 