10670
Following TcR stimulation , activation of Erk2 was only inhibited by a previously described truncated form of p85 that cannot bind the catalytic subunit , but not by other constructs of p85 .
 ( protein: truncated form of p85, None) , ( protein: catalytic subunit, None) , ( protein: TcR, None) , ( protein: Erk2, None) , ( protein: p85, 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: truncated form of p85, None) , ( protein: catalytic subunit, None) , ( protein: TcR, None) , ( protein: Erk2, None) , ( protein: p85, None) 