6496
To determine whether it is possible to artificially enhance the opening of the chromatin structure of a minimal beta-globin promoter , we placed a 101bp, erythroid-specific DNase 1 hypersensitive site-forming element ( HSFE ) immediately upstream of the beta-globin promoter and gene .
 ( DNA: erythroid-specific DNase 1 hypersensitive site-forming element, None) , ( DNA: minimal beta-globin promoter, None) , ( DNA: HSFE, 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: erythroid-specific DNase 1 hypersensitive site-forming element, None) , ( DNA: minimal beta-globin promoter, None) , ( DNA: HSFE, None) 