1328
Since internal sites of oxidant production have been shown to play a key role in the cytokine -stimulated activation of NF-kappa B , and since tyrosine kinase and phosphatase activities are known to be altered by oxidants, these findings suggest that intracellular redox status controls NF-kappa B activation by regulating tyrosine phosphorylation event(s) within the common step of the NF-kappa B signal transduction pathway .
 ( protein: NF-kappa B, None) , ( protein: cytokine, None) , ( protein: NF-kappa B, 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: cytokine, None) , ( protein: NF-kappa B, None) , ( protein: NF-kappa B, None) 