tokens: Erythroid-specific genes contain binding sites for NF-E1 ( also called GF-1 and Eryf-1 ; refs 1-3 respectively ) , the principal DNA-binding protein of the erythrocytic lineage .
folded_tokens: erythroid-specific genes contain binding sites for nf-e1 ( also called gf-1 and eryf-1 ; refs 1-3 respectively ) , the principal dna-binding protein of the erythrocytic lineage .
labels: B-DNA_family_or_group I-DNA_family_or_group O O O O B-protein_molecule O O O B-protein_molecule O B-protein_molecule O O O O O O O O B-protein_family_or_group I-protein_family_or_group O O B-cell_type I-cell_type O