7494
We propose that HePTP plays a negative role in antigen receptor signaling by specifically regulating MAP kinases in the cytosol and at early time points of T cell activation before the activation-induced expression of nuclear dual-specific MAP kinase phosphatases .
 ( protein: nuclear dual-specific MAP kinase phosphatases, None) , ( protein: HePTP, None) , ( protein: MAP kinases, 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: nuclear dual-specific MAP kinase phosphatases, None) , ( protein: HePTP, None) , ( protein: MAP kinases, None) 