605
Interaction between the stage selector element ( SSE ) in the proximal gamma-globin promoter and hypersensitivity site 2 in the locus control region partly mediates the competitive silencing of the beta-globin promoter in the fetal developmental stage.
 ( DNA: locus control region, None) , ( DNA: proximal gamma-globin promoter, None) , ( DNA: beta-globin promoter, None) , ( DNA: hypersensitivity site 2, None) , ( DNA: stage selector element, None) , ( DNA: SSE, 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:
 ( DNA: locus control region, None) , ( DNA: proximal gamma-globin promoter, None) , ( DNA: beta-globin promoter, None) , ( DNA: hypersensitivity site 2, None) , ( DNA: stage selector element, None) , ( DNA: SSE, None) 