4482
In this manuscript, we demonstrate that Rex shuttles between the nucleus and the cytoplasm and that its activation domain constitutes a nuclear export signal that specifies efficient transport to the cytoplasm .
 ( protein: activation domain, None) , ( protein: Rex, None) , ( protein: nuclear export signal, 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: activation domain, None) , ( protein: Rex, None) , ( protein: nuclear export signal, None) 