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| Título: | Superagonistic fluorinated vitamin D3 analogs stabilize helix 12 of the vitamin D receptor |
Autor: | Eelen, Guy; Valle, Noelia CSIC ORCID CVN; Muñoz Terol, Alberto CSIC ORCID; Verstuyf, Annemieke | Fecha de publicación: | 2008 | Editor: | Elsevier | Citación: | Chemistry and Biology 15(10): 1029-1034 (2008) | Resumen: | Side chain fluorination is often used to make analogs of 1,25-dihydroxyvitamin D3 [1,25(OH)2D3] resistant to degradation by 24-hydroxylase. The fluorinated nonsteroidal analogs CD578, WU515, and WY1113 have an increased prodifferentiating action on SW480-ADH colon cancer cells, which correlated with stronger induction of vitamin D receptor (VDR)-coactivator interactions and stronger repression of β-catenin/TCF activity. Cocrystallization of analog CD578 with the zebrafish (z)VDR and an SRC-1 coactivator peptide showed that the fluorine atoms of CD578 make additional contacts with Val444 and Phe448 of activation helix 12 (H12) of the zVDR and with Leu440 of the H11-H12 loop. Consequently, the SRC-1 peptide makes more contacts with the VDR-CD578 complex than with the VDR-1,25(OH)2D3 complex. These data show that fluorination not only affects degradation of an analog but can also have direct effects on H12 stabilization. © 2008 Elsevier Ltd. All rights reserved. | Descripción: | This is an article Open Access.-- et al. | Versión del editor: | http://dx.doi.org/10.1016/j.chembiol.2008.08.008 | URI: | http://hdl.handle.net/10261/81919 | DOI: | 10.1016/j.chembiol.2008.08.008 | Identificadores: | doi: 10.1016/j.chembiol.2008.08.008 issn: 1074-5521 e-issn: 1879-1301 |
| Aparece en las colecciones: | (IIBM) Artículos |
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| Fluorinated Vitamin D3.pdf | 446,92 kB | Adobe PDF |  Visualizar/Abrir |
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