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. 1979 Oct;76(10):5005–5009. doi: 10.1073/pnas.76.10.5005

Regulation of activity of chromatin receptors for thyroid hormone: possible involvement of histone-like proteins.

N L Eberhardt, J C Ring, L K Johnson, K R Latham, J W Apriletti, R N Kitsis, J D Baxter
PMCID: PMC413067  PMID: 228271

Abstract

Thyroid hormone receptors lose their capability for high-affinity binding of the biologically active triiodothyronine after solubilization and separation from other chromatin proteins. The high-affinity triiodothyronine-binding capacity can be reconstituted by addition of a histone-containing extract of chromatin of purified core histones (H2A, H2B, H3, and H4); a number of other acidic or basic proteins tested were ineffective. The data support a model of the receptor in which a "core" receptor subunit that contains a thyroid hormone-binding site interacts with a regulatory subunit, which is possibly a histone or histone-like species. This interaction with the "core" subunit enables the resulting "holo" receptor to bind biologically active hormones. These data also suggest that histones or related proteins can modulate the activity of nonhistone chromosomal proteins that are involved in regulating the expression of specific genes.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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