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1upw

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{{STRUCTURE_1upw| PDB=1upw | SCENE= }}
{{STRUCTURE_1upw| PDB=1upw | SCENE= }}
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'''CRYSTAL STRUCTURE OF THE HUMAN LIVER X RECEPTOR BETA LIGAND BINDING DOMAIN IN COMPLEX WITH A SYNTHETIC AGONIST'''
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===CRYSTAL STRUCTURE OF THE HUMAN LIVER X RECEPTOR BETA LIGAND BINDING DOMAIN IN COMPLEX WITH A SYNTHETIC AGONIST===
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==Overview==
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LXRbeta belongs to the nuclear hormone receptor superfamily of ligand-activated transcription factors. Its natural ligands are supposed to be oxidised derivatives of cholesterol. Stimulation of LXRbeta by agonists activates a number of genes that are involved in the regulation of lipid metabolism and cholesterol efflux from cells. Therefore, LXRbeta may represent a novel therapeutic target for the treatment of dyslipidemia and atherosclerosis.Here, we report the X-ray crystal structure of the LXRbeta ligand-binding domain in complex with a synthetic agonist, T-0901317. This compound occupies the ligand-binding pocket of the receptor, forms numerous lipophilic contacts with the protein and one crucial hydrogen bond to His435 and stabilises the agonist conformation of the receptor ligand-binding domain. The recruitment of the AF2-region of the protein is not achieved via direct polar interactions of the ligand with protein side-chains of this helical segment, but rather via few hydrophobic contacts and probably more importantly via indirect effects involving the pre-orientation of side-chains that surround the ligand-binding pocket and form the interface to the AF2-helix.On the basis of these results we propose a binding mode and a mechanism of action for the putative natural ligands, oxidised derivatives of cholesterol.
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(as it appears on PubMed at http://www.pubmed.gov), where 14643652 is the PubMed ID number.
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{{ABSTRACT_PUBMED_14643652}}
==About this Structure==
==About this Structure==
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[[Category: Nuclear hormone receptor]]
[[Category: Nuclear hormone receptor]]
[[Category: Transcription factor]]
[[Category: Transcription factor]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 11:33:05 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 07:27:42 2008''

Revision as of 04:27, 29 July 2008

Image:1upw.png

Template:STRUCTURE 1upw

CRYSTAL STRUCTURE OF THE HUMAN LIVER X RECEPTOR BETA LIGAND BINDING DOMAIN IN COMPLEX WITH A SYNTHETIC AGONIST

Template:ABSTRACT PUBMED 14643652

About this Structure

1UPW is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.

Reference

Crystal structure of the human liver X receptor beta ligand-binding domain in complex with a synthetic agonist., Hoerer S, Schmid A, Heckel A, Budzinski RM, Nar H, J Mol Biol. 2003 Dec 12;334(5):853-61. PMID:14643652

Page seeded by OCA on Tue Jul 29 07:27:42 2008

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