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2gpv

From Proteopedia

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{{STRUCTURE_2gpv| PDB=2gpv | SCENE= }}
{{STRUCTURE_2gpv| PDB=2gpv | SCENE= }}
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'''Estrogen Related Receptor-gamma ligand binding domain complexed with 4-hydroxy-tamoxifen and a SMRT peptide'''
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===Estrogen Related Receptor-gamma ligand binding domain complexed with 4-hydroxy-tamoxifen and a SMRT peptide===
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==Overview==
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X-ray crystal structures of the ligand binding domain (LBD) of the estrogen-related receptor-gamma (ERRgamma) were determined that describe this receptor in three distinct states: unliganded, inverse agonist bound, and agonist bound. Two structures were solved for the unliganded state, the ERRgamma LBD alone, and in complex with a coregulator peptide representing a portion of receptor interacting protein 140 (RIP140). No significant differences were seen between these structures that both exhibited the conformation of ERRgamma seen in studies with other coactivators. Two structures were obtained describing the inverse agonist-bound state, the ERRgamma LBD with 4-hydroxytamoxifen (4-OHT), and the ERRgamma LBD with 4-OHT and a peptide representing a portion of the silencing mediator of retinoid and thyroid hormone action protein (SMRT). The 4-OHT structure was similar to other reported inverse agonist bound structures, showing reorientation of phenylalanine 435 and a displacement of the AF-2 helix relative to the unliganded structures with little other rearrangement occurring. No significant changes to the LBD appear to be induced by peptide binding with the addition of the SMRT peptide to the ERRgamma plus 4-OHT complex. The observed agonist-bound state contains the ERRgamma LBD, a ligand (GSK4716), and the RIP140 peptide and reveals an unexpected rearrangement of the phenol-binding residues. Thermal stability studies show that agonist binding leads to global stabilization of the ligand binding domain. In contrast to the conventional mechanism of nuclear receptor ligand activation, activation of ERRgamma by GSK4716 does not appear to involve a major rearrangement or significant stabilization of the C-terminal helix.
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{{ABSTRACT_PUBMED_16990259}}
==About this Structure==
==About this Structure==
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[[Category: Tamoxifen]]
[[Category: Tamoxifen]]
[[Category: Transcription]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 05:22:59 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 00:01:58 2008''

Revision as of 21:02, 28 July 2008

Image:2gpv.png

Template:STRUCTURE 2gpv

Estrogen Related Receptor-gamma ligand binding domain complexed with 4-hydroxy-tamoxifen and a SMRT peptide

Template:ABSTRACT PUBMED 16990259

About this Structure

2GPV is a Protein complex structure of sequences from Homo sapiens. Full crystallographic information is available from OCA.

Reference

X-ray crystal structures of the estrogen-related receptor-gamma ligand binding domain in three functional states reveal the molecular basis of small molecule regulation., Wang L, Zuercher WJ, Consler TG, Lambert MH, Miller AB, Orband-Miller LA, McKee DD, Willson TM, Nolte RT, J Biol Chem. 2006 Dec 8;281(49):37773-81. Epub 2006 Sep 21. PMID:16990259

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