6103
Expression of wild-type SHP1 had a very small effect on the TCR-induced tyrosine phosphorylation of ZAP-70 and Syk , even when SHP1 was overexpressed 20 - 100-fold over endogenous SHP1 .
 ( protein: endogenous SHP1, None) , ( protein: SHP1, None) , ( protein: SHP1, None) , ( protein: Syk, None) , ( protein: wild-type SHP1, None) , ( protein: SHP1, 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: endogenous SHP1, None) , ( protein: SHP1, None) , ( protein: SHP1, None) , ( protein: Syk, None) , ( protein: wild-type SHP1, None) , ( protein: SHP1, None) , ( protein: ZAP-70, None) 