3894
Glutathione-S-transferase (GST)-Grb2 fusion proteins have been used to identify the potential role of Grb2-binding proteins in platelet activation by the platelet low-affinity IgG receptor , Fc gamma RIIA .
 ( protein: Glutathione-S-transferase (GST)-Grb2 fusion proteins, None) , ( protein: Fc gamma RIIA, None) , ( protein: Glutathione-S-transferase, None) , ( cell type: platelet, None) , ( protein: platelet low-affinity IgG receptor, None) , ( protein: Grb2-binding proteins, None) , ( cell type: platelet, 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: Glutathione-S-transferase (GST)-Grb2 fusion proteins, None) , ( protein: Fc gamma RIIA, None) , ( protein: Glutathione-S-transferase, None) , ( cell type: platelet, None) , ( protein: platelet low-affinity IgG receptor, None) , ( protein: Grb2-binding proteins, None) , ( cell type: platelet, None) 