7292
GATA-1 and erythropoietin cooperate to promote erythroid cell survival by regulating bcl-xL expression .
 ( protein: bcl-xL, None) , ( protein: erythropoietin, None) , ( protein: GATA-1, 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: bcl-xL, None) , ( protein: erythropoietin, None) , ( protein: GATA-1, None) 