4826
Regulation of the transcription factor NF-kappaB involves proteasome-mediated processing of the NF-kappaB1 p105 precursor protein , which generates the p50 subunit of NF-kappaB .
 ( protein: NF-kappaB1 p105 precursor protein, None) , ( protein: p50 subunit, None) , ( protein: p105, None) , ( protein: NF-kappaB, None) , ( protein: NF-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: NF-kappaB1 p105 precursor protein, None) , ( protein: p50 subunit, None) , ( protein: p105, None) , ( protein: NF-kappaB, None) , ( protein: NF-kappaB, None) 