Title |
Ligand-Dependent Nuclear Receptor Corepressor LCoR Functions by Histone Deacetylase-Dependent and -Independent Mechanisms
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Published in |
Molecular Cell, January 2003
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DOI | 10.1016/s1097-2765(03)00014-5 |
Pubmed ID | |
Authors |
Isabelle Fernandes, Yolande Bastien, Timothy Wai, Karen Nygard, Roberto Lin, Olivier Cormier, Han S. Lee, Frankie Eng, Nicholas R. Bertos, Nadine Pelletier, Sylvie Mader, Victor K.M. Han, Xiang-Jiao Yang, John H. White |
Abstract |
LCoR (ligand-dependent corepressor) is a transcriptional corepressor widely expressed in fetal and adult tissues that is recruited to agonist-bound nuclear receptors through a single LXXLL motif. LCoR binding to estrogen receptor alpha depends in part on residues in the coactivator binding pocket distinct from those bound by TIF-2. Repression by LCoR is abolished by histone deacetylase inhibitor trichostatin A in a receptor-dependent fashion, indicating HDAC-dependent and -independent modes of action. LCoR binds directly to specific HDACs in vitro and in vivo. Moreover, LCoR functions by recruiting C-terminal binding protein corepressors through two consensus binding motifs and colocalizes with CtBPs in the nucleus. LCoR represents a class of corepressor that attenuates agonist-activated nuclear receptor signaling by multiple mechanisms. |
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Unknown | 21 | 17% |
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