1kv6

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[[Image:1kv6.gif|left|200px]]
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{{STRUCTURE_1kv6| PDB=1kv6 | SCENE= }}
{{STRUCTURE_1kv6| PDB=1kv6 | SCENE= }}
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'''X-ray structure of the orphan nuclear receptor ERR3 ligand-binding domain in the constitutively active conformation'''
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===X-ray structure of the orphan nuclear receptor ERR3 ligand-binding domain in the constitutively active conformation===
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==Overview==
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The crystal structure of the ligand binding domain (LBD) of the estrogen-related receptor 3 (ERR3) complexed with a steroid receptor coactivator-1 (SRC-1) peptide reveals a transcriptionally active conformation in absence of any ligand. The structure explains why estradiol does not bind ERRs with significant affinity. Docking of the previously reported ERR antagonists, diethylstilbestrol and 4-hydroxytamoxifen, requires structural rearrangements enlarging the ligand binding pocket that can only be accommodated with an antagonist LBD conformation. Mutant receptors in which the ligand binding cavity is filled up by bulkier side chains still interact with SRC-1 in vitro and are transcriptionally active in vivo, but are no longer efficiently inactivated by diethylstilbestrol or 4-hydroxytamoxifen. These results provide structural and functional evidence for ligand-independent transcriptional activation by ERR3.
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(as it appears on PubMed at http://www.pubmed.gov), where 11864604 is the PubMed ID number.
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{{ABSTRACT_PUBMED_11864604}}
==About this Structure==
==About this Structure==
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[[Category: Structural proteomics in europe]]
[[Category: Structural proteomics in europe]]
[[Category: Transcriptionally active conformation in absence of ligand]]
[[Category: Transcriptionally active conformation in absence of ligand]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Apr 13 08:07:00 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Wed Jul 2 11:04:20 2008''

Revision as of 08:04, 2 July 2008

Image:1kv6.png

Template:STRUCTURE 1kv6

X-ray structure of the orphan nuclear receptor ERR3 ligand-binding domain in the constitutively active conformation

Template:ABSTRACT PUBMED 11864604

About this Structure

1KV6 is a Protein complex structure of sequences from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Structural and functional evidence for ligand-independent transcriptional activation by the estrogen-related receptor 3., Greschik H, Wurtz JM, Sanglier S, Bourguet W, van Dorsselaer A, Moras D, Renaud JP, Mol Cell. 2002 Feb;9(2):303-13. PMID:11864604

Page seeded by OCA on Wed Jul 2 11:04:20 2008

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