14355
A dominant inhibitory ras mutant specifically blocked antigen receptor agonism, indicating that ras activity is required for antigen receptor signaling .
 ( protein: ras, None) , ( protein: antigen receptor, None) , ( protein: dominant inhibitory ras mutant, 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: ras, None) , ( protein: antigen receptor, None) , ( protein: dominant inhibitory ras mutant, None) 