3234
In this report, we demonstrate that engagement of the TCR results in tyrosine phosphorylation of SLP-76 in its amino-terminal acidic region .
 ( protein: amino-terminal acidic region, None) , ( protein: TCR, None) , ( protein: SLP-76, 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: amino-terminal acidic region, None) , ( protein: TCR, None) , ( protein: SLP-76, None) 