11440
The reduction paralleled a decrease in tyrosine phosphorylation of endogenous wild-type Itk .
 ( protein: endogenous wild-type Itk, None) , ( protein: Itk, 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 wild-type Itk, None) , ( protein: Itk, None) 