375
However, upon stable integration into chromatin , deletion of this region causes a nearly 90% decrease in promoter activity compared with expression from an alpha-globin promoter retaining this region.
 ( DNA: alpha-globin promoter, None) , ( DNA: chromatin, 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: alpha-globin promoter, None) , ( DNA: chromatin, None) 