4899
Our data suggest that interferon-alpha /beta-induced tyrosine phosphorylation increases the stability of a preexisting, latent, STAT1 - STAT2 signaling complex .
 ( protein: interferon-alpha, None) , ( protein: STAT2 signaling complex, None) , ( protein: STAT1, None) , ( protein: STAT2, 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: interferon-alpha, None) , ( protein: STAT2 signaling complex, None) , ( protein: STAT1, None) , ( protein: STAT2, None) 