12777
Tyrosine phosphorylation of linker proteins enables the T cell antigen receptor (TCR)-associated protein tyrosine kinases to phosphorylate and regulate effector molecules that generate second messengers .
 ( protein: effector molecules, None) , ( protein: T cell antigen receptor (TCR)-associated protein tyrosine kinases, None) , ( protein: second messengers, None) , ( protein: linker proteins, 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: effector molecules, None) , ( protein: T cell antigen receptor (TCR)-associated protein tyrosine kinases, None) , ( protein: second messengers, None) , ( protein: linker proteins, None) 