Interaction of estrogen receptor complexes with the promoter region of genes that are negatively regulated by estrogens: the alpha 2u-globulins.

Abstract:

:Since estrogens strongly suppress the expression of alpha 2u-globulin genes in the rat liver, we studied the binding of estrogen-receptor complexes to fragments derived from alpha 2u-globulin gene RAO 01 using a DNA-cellulose competition assay. Rat uterus cytosol labelled with [3H]estradiol was used as a source of the estrogen receptor. As a positive control in these experiments we used an oligonucleotide containing the estrogen response element (ERE) cloned into pUC18. Our experiments indicate that estrogen-receptor complexes bind specifically to the ERE and to a fragment of RAO 01 located in the 5'-upstream region (bp -606 up to -575). This fragment is conserved among other members of this gene family. This is the first time that in vitro estrogen receptor binding is observed to gene fragments derived from a gene that is repressed by this steroid in vivo.

authors

Van Dijck P,Verhoeven G

doi

10.1016/s0006-291x(05)80127-5

subject

Has Abstract

pub_date

1992-01-15 00:00:00

pages

174-81

issue

1

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(05)80127-5

journal_volume

182

pub_type

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