Hypersensitive site 4 of the human β-globin locus control region.


Article
volume 19 pp 1413-1419.
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The Locus Control Region (LCR) of the human beta globin gene domain is defined by four erythroid-specific DNasel hypersensitive sites (HSS) located upstream of this multigene cluster. The LCR confers copy number dependent high levels of erythroid specific expression to a linked transgene, independent of the site of integration. To assess the role of the individual hypersensitive sites of the LCR, we have localized HSS4 to a 280bp fragment that is functional both in murine erythroleukaemia (MEL) cells and in transgenic mice. This fragment coincides with the major area of hypersensitivity 'in vivo' and contains a number of DNasel footprints. Bandshift analysis shows that these footprints correspond to binding sites for the erythroid specific proteins GATA1 and NF-E2 and a number of ubiquitous proteins, including jun/fos, Sp1 and TEF2.



Keywords


Automatically Extracted Terms
  • fragment
  • globin
  • hss 4
  • binding
  • expression
  • mel cells
  • grosveld
  • hypersensitive
  • hss 2
  • level
  • protein
  • oligonucleotide
  • factor
  • acids research
  • probe
  • number
  • transgene
  • region
  • oligo
  • dnasei