The "beta-like-globin" gene domain in human erythroid cells
- PMID: 3879975
- PMCID: PMC390720
- DOI: 10.1073/pnas.82.19.6384
The "beta-like-globin" gene domain in human erythroid cells
Abstract
We have mapped the distribution of the major and minor DNase I-hypersensitive sites in the human "beta-like-globin" gene domain. The minor DNase I-hypersensitive sites map close to the 5' end of each of the beta-like-globin genes. Their presence is specifically associated with the transcription of the immediate downstream beta-like-globin genes. The major DNase I-hypersensitive sites map in what appear to be the 5' and 3' boundary areas of the human beta-like-globin gene domain, a region estimated to span at least 90 kilobases of DNA. These major sites are present in various erythroid cells, which express predominantly either the embryonic, the fetal, or the adult beta-like-globin genes, and seem to be involved in defining the active beta-like-globin genes domain in cells of erythroid lineage. The four major DNase I-hypersensitive sites in the 5' boundary area, when correlated with sequencing data, are shown to be located in DNA regions containing enhancer core-like sequences and alternating purine and pyrimidine bases.
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