11152
Human neutrophil elastase proteolytically activates the platelet integrin alphaIIbbeta3 through cleavage of the carboxyl terminus of the alphaIIb subunit heavy chain .
 ( protein: alphaIIb subunit heavy chain, None) , ( protein: platelet integrin, None) , ( protein: carboxyl terminus, None) , ( protein: Human neutrophil elastase, None) , ( protein: alphaIIbbeta3, 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: alphaIIb subunit heavy chain, None) , ( protein: platelet integrin, None) , ( protein: carboxyl terminus, None) , ( protein: Human neutrophil elastase, None) , ( protein: alphaIIbbeta3, None) 