8245
Furthermore, the phosphorylation status of TRAF2 had significant effects on the ability of the protein to bind to CD40 , as evidenced by our observations that the CD40 cytoplasmic domain interacted preferentially with underphosphorylated TRAF2 and that phosphatase treatment significantly enhanced the binding of TRAF2 to CD40 .
 ( protein: CD40, None) , ( protein: phosphatase, None) , ( protein: CD40, None) , ( protein: TRAF2, None) , ( protein: CD40 cytoplasmic domain, None) , ( protein: TRAF2, None) , ( protein: TRAF2, None) , ( protein: CD40, 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: CD40, None) , ( protein: phosphatase, None) , ( protein: CD40, None) , ( protein: TRAF2, None) , ( protein: CD40 cytoplasmic domain, None) , ( protein: TRAF2, None) , ( protein: TRAF2, None) , ( protein: CD40, None) 