7890
By using PD98059 , we demonstrated that the Raf1/MEK1/ ERK1/2 pathway did not affect the DNA binding of NF-kappa B but, rather, acted at the level of transcriptional activity of NF-kappa B .
 ( protein: NF-kappa B, None) , ( protein: ERK1/2, 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, None) , ( protein: ERK1/2, None) , ( protein: NF-kappa B, None) 