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 .
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 .
O O O B-DNA_domain_or_region O O O B-DNA_domain_or_region O B-DNA_domain_or_region I-DNA_domain_or_region O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O O O O B-DNA_domain_or_region I-DNA_domain_or_region I-DNA_domain_or_region O O B-cell_line I-cell_line I-cell_line I-cell_line O O B-DNA_domain_or_region I-DNA_domain_or_region O O O O B-cell_line I-cell_line I-cell_line I-cell_line O