535
Three of these HS-40 enhancer motifs , 5'NF-E2/AP1 , GT II , and GATA-1(c) , positively regulate the zeta 2-globin promoter activity in embryonic/fetal erythroid K562 cells and the adult alpha -globin promoter activity in adult erythroid MEL cells .
 ( DNA: adult alpha -globin promoter, None) , ( DNA: GATA-1(c), None) , ( cell line: embryonic/fetal erythroid K562 cells, None) , ( DNA: HS-40 enhancer motifs, None) , ( DNA: adult alpha, None) , ( cell line: adult erythroid MEL cells, None) , ( DNA: zeta 2-globin promoter, None) , ( DNA: GT II, None) , ( DNA: HS-40, None) , ( DNA: 5#$%#NF-E2/AP1, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( DNA: adult alpha -globin promoter, None) , ( DNA: GATA-1(c), None) , ( cell line: embryonic/fetal erythroid K562 cells, None) , ( DNA: HS-40 enhancer motifs, None) , ( DNA: adult alpha, None) , ( cell line: adult erythroid MEL cells, None) , ( DNA: zeta 2-globin promoter, None) , ( DNA: GT II, None) , ( DNA: HS-40, None) , ( DNA: 5#$%#NF-E2/AP1, None) 