8262
Incidentally, Grf40 binds to linker for activation of T cells ( LAT ) possibly via its SH2 domain .
 ( protein: SH2 domain, None) , ( protein: LAT, None) , ( protein: linker for activation of T cells, None) , ( protein: Grf40, None) , ( cell type: T cells, 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: SH2 domain, None) , ( protein: LAT, None) , ( protein: linker for activation of T cells, None) , ( protein: Grf40, None) , ( cell type: T cells, None) 