1h9u

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[[Image:1h9u.jpg|left|200px]]
 
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{{Structure
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==The structure of the human retinoid-X-receptor beta ligand binding domain in complex with the specific synthetic agonist LG100268==
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|PDB= 1h9u |SIZE=350|CAPTION= <scene name='initialview01'>1h9u</scene>, resolution 2.70&Aring;
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<StructureSection load='1h9u' size='340' side='right'caption='[[1h9u]], [[Resolution|resolution]] 2.70&Aring;' scene=''>
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|SITE= <scene name='pdbsite=LGA:Ni+Binding+Site+For+Chain+D'>LGA</scene>
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== Structural highlights ==
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|LIGAND= <scene name='pdbligand=NI:NICKEL+(II)+ION'>NI</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene> and <scene name='pdbligand=LG2:6-[1-(3,5,5,8,8-PENTAMETHYL-5,6,7,8-TETRAHYDRONAPHTHALEN-2-YL)CYCLOPROPYL]PYRIDINE-3-CARBOXYLIC ACID'>LG2</scene>
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<table><tr><td colspan='2'>[[1h9u]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1H9U OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1H9U FirstGlance]. <br>
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|ACTIVITY=
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.7&#8491;</td></tr>
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|GENE=
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=LG2:6-[1-(3,5,5,8,8-PENTAMETHYL-5,6,7,8-TETRAHYDRONAPHTHALEN-2-YL)CYCLOPROPYL]PYRIDINE-3-CARBOXYLIC+ACID'>LG2</scene>, <scene name='pdbligand=NI:NICKEL+(II)+ION'>NI</scene></td></tr>
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}}
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1h9u FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1h9u OCA], [https://pdbe.org/1h9u PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1h9u RCSB], [https://www.ebi.ac.uk/pdbsum/1h9u PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1h9u ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/RXRB_HUMAN RXRB_HUMAN] Receptor for retinoic acid. Retinoic acid receptors bind as heterodimers to their target response elements in response to their ligands, all-trans or 9-cis retinoic acid, and regulate gene expression in various biological processes. The RAR/RXR heterodimers bind to the retinoic acid response elements (RARE) composed of tandem 5'-AGGTCA-3' sites known as DR1-DR5 (By similarity). Specifically binds 9-cis retinoic acid (9C-RA).
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/h9/1h9u_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1h9u ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Ligands that specifically target retinoid-X receptors (RXRs) are emerging as potentially powerful therapies for cancer, diabetes, and the lowering of circulatory cholesterol. To date, RXR has only been crystallized in the absence of ligand or with the promiscuous ligand 9-cis retinoic acid, which also activates retinoic acid receptors. Here we present the structure of hRXRbeta in complex with the RXR-specific agonist LG100268 (LG268). The structure clearly reveals why LG268 is specific for the RXR ligand binding pocket and will not activate retinoic acid receptors. Intriguingly, in the crystals, the C-terminal "activation" helix (AF-2/helix H12) is trapped in a novel position not seen in other nuclear receptor structures such that it does not cap the ligand binding cavity. Mammalian two-hybrid assays indicate that LG268 is unable to release co-repressors from RXR unless co-activators are also present. Together these findings suggest that RXR ligands may be inefficient at repositioning helix H12.
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'''THE STRUCTURE OF THE HUMAN RETINOID-X-RECEPTOR BETA LIGAND BINDING DOMAIN IN COMPLEX WITH THE SPECIFIC SYNTHETIC AGONIST LG100268'''
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The structural basis for the specificity of retinoid-X receptor-selective agonists: new insights into the role of helix H12.,Love JD, Gooch JT, Benko S, Li C, Nagy L, Chatterjee VK, Evans RM, Schwabe JW J Biol Chem. 2002 Mar 29;277(13):11385-91. Epub 2002 Jan 8. PMID:11782480<ref>PMID:11782480</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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</div>
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<div class="pdbe-citations 1h9u" style="background-color:#fffaf0;"></div>
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==Overview==
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==See Also==
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Ligands that specifically target retinoid-X receptors (RXRs) are emerging as potentially powerful therapies for cancer, diabetes, and the lowering of circulatory cholesterol. To date, RXR has only been crystallized in the absence of ligand or with the promiscuous ligand 9-cis retinoic acid, which also activates retinoic acid receptors. Here we present the structure of hRXRbeta in complex with the RXR-specific agonist LG100268 (LG268). The structure clearly reveals why LG268 is specific for the RXR ligand binding pocket and will not activate retinoic acid receptors. Intriguingly, in the crystals, the C-terminal "activation" helix (AF-2/helix H12) is trapped in a novel position not seen in other nuclear receptor structures such that it does not cap the ligand binding cavity. Mammalian two-hybrid assays indicate that LG268 is unable to release co-repressors from RXR unless co-activators are also present. Together these findings suggest that RXR ligands may be inefficient at repositioning helix H12.
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*[[Retinoid X receptor 3D structures|Retinoid X receptor 3D structures]]
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== References ==
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==About this Structure==
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<references/>
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1H9U is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1H9U OCA].
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__TOC__
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</StructureSection>
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==Reference==
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The structural basis for the specificity of retinoid-X receptor-selective agonists: new insights into the role of helix H12., Love JD, Gooch JT, Benko S, Li C, Nagy L, Chatterjee VK, Evans RM, Schwabe JW, J Biol Chem. 2002 Mar 29;277(13):11385-91. Epub 2002 Jan 8. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/11782480 11782480]
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[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
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[[Category: Single protein]]
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[[Category: Large Structures]]
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[[Category: Gooch, J T.]]
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[[Category: Gooch JT]]
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[[Category: Love, J D.]]
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[[Category: Love JD]]
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[[Category: Schwabe, J W.R.]]
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[[Category: Schwabe JWR]]
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[[Category: CL]]
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[[Category: LG2]]
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[[Category: NI]]
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[[Category: nuclear receptor]]
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[[Category: rxr]]
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[[Category: transcription factor]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 11:34:25 2008''
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Current revision

The structure of the human retinoid-X-receptor beta ligand binding domain in complex with the specific synthetic agonist LG100268

PDB ID 1h9u

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