Nucleic Acids Research, 1985, Vol. 13, No. 14 5189-5202
© 1985
Articles |
Nuclease-hypersensitive sites in chromatin of the estrogen-inducible apoVLDL II gene of chicken
Department of Biochemistry, Groningen University Nijenborgh 16, 9747 AG Groningen, The Netherlands
Received February 19, 1985. Revised June 13, 1985. Accepted June 13, 1985.
DNAseI-hypersensitlve sites were localized in apoVLDL II chromatin from chicken. In the liver two sites at 1.75 and 1.0 kb upstream from the capsite are present before the gene is activated. After induction by estradiol a number of additional sites appear, three in the promotor region of the gene, one within the coding region and two behind the poly-A signal. These sites disappear when the expression of the gene is shut off upon estradiol withdrawal. All sites appear to be tissue-specific in that they are not found in other tissues of the rooster. However, in oviduct of the laying hen we find a hypersensitive site at 1.6 kb in front of the gene.
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