5068
Inhibition of alpha interferon but not gamma interferon signal transduction by phorbol esters is mediated by a tyrosine phosphatase .
 ( protein: tyrosine phosphatase, None) , ( protein: gamma interferon, None) , ( protein: alpha interferon, 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: tyrosine phosphatase, None) , ( protein: gamma interferon, None) , ( protein: alpha interferon, None) 