Dexamethasone-receptor complexes can be extracted from HeLa cell nuclei by mild sonication. These complexes can account for 800-1000 binding sites/cell, and are indistinguishable from salt-extractable ones as judged by sucrose gradient centrifugation in the presence of 0.3 M KCl, showing a sedimentation coefficient of 3.6 S. These complexes, however, broadly sediment in the 7 to 3.6 S region of low salt sucrose gradients. Enzymatic treatment of soluble extracts from nuclear sonicates shows that RNA is associated to dexamethasone-receptor complexes.
RNase-sensitive glucocorticoid-receptor complexes from HeLa cell nuclei / Rossini, Gian Paolo; B., Barbiroli. - In: BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS. - ISSN 0006-291X. - STAMPA. - 113:(1983), pp. 876-882.
RNase-sensitive glucocorticoid-receptor complexes from HeLa cell nuclei
ROSSINI, Gian Paolo;
1983
Abstract
Dexamethasone-receptor complexes can be extracted from HeLa cell nuclei by mild sonication. These complexes can account for 800-1000 binding sites/cell, and are indistinguishable from salt-extractable ones as judged by sucrose gradient centrifugation in the presence of 0.3 M KCl, showing a sedimentation coefficient of 3.6 S. These complexes, however, broadly sediment in the 7 to 3.6 S region of low salt sucrose gradients. Enzymatic treatment of soluble extracts from nuclear sonicates shows that RNA is associated to dexamethasone-receptor complexes.
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