1706
The protease inhibitors N alpha-tosylphenylalanyl chloromethyl ketone ( TPCK ) and N alpha-tosyl-L-lysine chloromethyl ketone ( TLCK ) block activation of NF-kappa B /Rel proteins by preventing degradation of I kappa B alpha .
 ( protein: NF-kappa B /Rel proteins, None) , ( protein: I kappa B alpha, None) , ( protein: NF-kappa B, 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-kappa B /Rel proteins, None) , ( protein: I kappa B alpha, None) , ( protein: NF-kappa B, None) 