4831
These findings suggest that the processing of p105 is subject to negative regulation by the various NF-kappaB subunits .
 ( protein: NF-kappaB subunits, None) , ( protein: NF-kappaB, None) , ( protein: p105, 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-kappaB subunits, None) , ( protein: NF-kappaB, None) , ( protein: p105, None) 