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Activation functions 1 and 2 of nuclear receptors: Molecular strategies for transcriptional activation
Södertörns högskola, Avdelning Naturvetenskap. Karolinska Institutet.ORCID-id: 0000-0003-1029-9969
2003 (engelsk)Inngår i: Molecular Endocrinology, ISSN 0888-8809, E-ISSN 1944-9917, Vol. 17, nr 10, s. 1901-1909Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Nuclear receptors (NRs) comprise a family of ligand inducible transcription factors. To achieve transcriptional activation of target genes, DNA-bound NRs directly recruit general transcription factors (GTFs) to the preinitiation complex or bind intermediary factors, so-called coactivators. These coactivators often constitute subunits of larger multiprotein complexes that act at several functional levels, such as chromatin remodeling, enzymatic modification of histone tails, or modulation of the preinitiation complex via interactions with RNA polymerase II and GTFs. The binding of NR to coactivators is often mediated through one of its activation domains. Many NRs have at least two activation domains, the ligand-independent activation function (AF)-1, which resides in the N-terminal domain, and the ligand-dependent AF-2, which is localized in the C-terminal domain. In this review, we summarize and discuss current knowledge regarding the molecular mechanisms of AF-1- and AF-2-mediated gene activation, focusing on AF-1 and AF-2 conformation and coactivator binding.

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2003. Vol. 17, nr 10, s. 1901-1909
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URN: urn:nbn:se:sh:diva-15532DOI: 10.1210/me.2002-0384ISI: 000185640100001PubMedID: 12893880Scopus ID: 2-s2.0-0345650665OAI: oai:DiVA.org:sh-15532DiVA, id: diva2:504749
Tilgjengelig fra: 2012-02-21 Laget: 2012-02-21 Sist oppdatert: 2017-12-07bibliografisk kontrollert

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