An erythrocyte-specific DNA-binding factor recognizes a regulatory sequence common to all chicken globin genes.
We have identified a protein present only in erythroid cells that binds to two adjacent sites within an enhancer region of the chicken beta-globin locus. Mutation of the sites, so that binding by the factor can no longer be detected in vitro, leads to a loss of enhancing ability, assayed by transient expression in primary erythrocytes. Binding sites for the erythroid-specific factor (Eryf1) are found within regulatory regions for all chicken globin genes. A strong Eryf1 binding site is also present within the enhancer of at least one human globin gene, and proteins from human erythroid cells (but not HeLa cells) bind to both the chicken and the human sites.
Evans
T
T
Laboratory of Molecular Biology, National Institute of Diabetes and Digestive and Kidney Diseases, Bethesda, MD 20892.
Reitman
M
M
Felsenfeld
G
G
D000818:Animals; D001483:Base Sequence; D001665:Binding Sites; D002642:Chick Embryo; D004247:DNA / Q000378:metabolism*; D004268:DNA-Binding Proteins / Q000235:genetics*; D004742:Enhancer Elements, Genetic; D004912:Erythrocytes / Q000378:metabolism*; D050981:Erythroid-Specific DNA-Binding Factors; D004920:Erythropoiesis; D005809:Genes, Regulator; D005914:Globins / Q000235:genetics*; D014157:Transcription Factors
D004268:DNA-Binding Proteins; D050981:Erythroid-Specific DNA-Binding Factors; D014157:Transcription Factors; D005914:Globins; D004247:DNA