3236
Although mutation of either Y113 and Y128 has a minimal effect on SLP-76 function , mutation of both residues decreases significantly the ability of SLP-76 to promote T cell activation .
 ( protein: SLP-76, 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: SLP-76, None) , ( protein: SLP-76, None) 