3135
Moreover, the catalytic domain of pp56(lck) was able to induce IL-2 cytokine production to an extent similar to that of wild-type pp56(lck) .
 ( protein: catalytic domain, None) , ( protein: pp56(lck), None) , ( protein: IL-2, None) , ( protein: cytokine, None) , ( protein: pp56(lck), 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: catalytic domain, None) , ( protein: pp56(lck), None) , ( protein: IL-2, None) , ( protein: cytokine, None) , ( protein: pp56(lck), None) 