6751
IL-4R are thought to be composed of the IL-4R alpha chain ( IL-4R alpha ) and either the IL-2R gamma chain or the IL-13R alpha chain .
 ( protein: IL-4R alpha, None) , ( protein: IL-4R, None) , ( protein: IL-2R gamma chain, None) , ( protein: IL-13R alpha chain, None) , ( protein: IL-4R alpha chain, 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: IL-4R alpha, None) , ( protein: IL-4R, None) , ( protein: IL-2R gamma chain, None) , ( protein: IL-13R alpha chain, None) , ( protein: IL-4R alpha chain, None) 