ChIP-chip data for the α globin locus in erythroid precursor and HeLa cells. Results from ChIP-chip experiments for GATA-1, RNAP II, and AcH3 in erythroid precursors and AcH3 in HeLa cells analyzed on the custom-designed array. The figure covers a 120-kb region (position chr16: 70 000-187 000) that includes the α-globin locus. The globin genes are indicated below and include ζ globin (HBZ), α globins (HBA1 and HBA2), and θ globin (HBQ1), and the ψα2 pseudogene (HBM). Other genes include C16ORF35 and LUC7L. Hypersensitive sites in the human α globin locus (HS48, HS40, HS33, and HS10) and the human orthologous mouse HS12 (ho12) are marked with .