3490
The ZAP-70 mutant studied here could be phosphorylated on tyrosine when associated to the TCR zeta chain and was able to bind p56(lck) .
 ( protein: TCR zeta chain, None) , ( protein: p56(lck), None) , ( protein: ZAP-70, 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: TCR zeta chain, None) , ( protein: p56(lck), None) , ( protein: ZAP-70, None) 