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{{STRUCTURE_4dk8|  PDB=4dk8  |  SCENE=  }}
==Crystal structure of LXR ligand binding domain in complex with partial agonist 5==
===Crystal structure of LXR ligand binding domain in complex with partial agonist 5===
<StructureSection load='4dk8' size='340' side='right' caption='[[4dk8]], [[Resolution|resolution]] 2.75&Aring;' scene=''>
{{ABSTRACT_PUBMED_22406115}}
== Structural highlights ==
 
<table><tr><td colspan='2'>[[4dk8]] is a 4 chain structure with 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=4DK8 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4DK8 FirstGlance]. <br>
==Disease==
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=0KT:N-METHYL-N-(4-{(1S)-2,2,2-TRIFLUORO-1-HYDROXY-1-[1-(2-METHOXYETHYL)-1H-PYRROL-2-YL]ETHYL}PHENYL)BENZENESULFONAMIDE'>0KT</scene>, <scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</scene></td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4dk7|4dk7]]</td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">NR1H2, LXRB, NER, UNR ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Histone_acetyltransferase Histone acetyltransferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.3.1.48 2.3.1.48] </span></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4dk8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4dk8 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4dk8 RCSB], [http://www.ebi.ac.uk/pdbsum/4dk8 PDBsum]</span></td></tr>
</table>
== Disease ==
[[http://www.uniprot.org/uniprot/NCOA1_HUMAN NCOA1_HUMAN]] Note=A chromosomal aberration involving NCOA1 is a cause of rhabdomyosarcoma. Translocation t(2;2)(q35;p23) with PAX3 generates the NCOA1-PAX3 oncogene consisting of the N-terminus part of PAX3 and the C-terminus part of NCOA1. The fusion protein acts as a transcriptional activator. Rhabdomyosarcoma is the most common soft tissue carcinoma in childhood, representing 5-8% of all malignancies in children.  
[[http://www.uniprot.org/uniprot/NCOA1_HUMAN NCOA1_HUMAN]] Note=A chromosomal aberration involving NCOA1 is a cause of rhabdomyosarcoma. Translocation t(2;2)(q35;p23) with PAX3 generates the NCOA1-PAX3 oncogene consisting of the N-terminus part of PAX3 and the C-terminus part of NCOA1. The fusion protein acts as a transcriptional activator. Rhabdomyosarcoma is the most common soft tissue carcinoma in childhood, representing 5-8% of all malignancies in children.  
== Function ==
[[http://www.uniprot.org/uniprot/NR1H2_HUMAN NR1H2_HUMAN]] Orphan receptor. Binds preferentially to double-stranded oligonucleotide direct repeats having the consensus half-site sequence 5'-AGGTCA-3' and 4-nt spacing (DR-4). Regulates cholesterol uptake through MYLIP-dependent ubiquitination of LDLR, VLDLR and LRP8 (By similarity). [[http://www.uniprot.org/uniprot/NCOA1_HUMAN NCOA1_HUMAN]] Nuclear receptor coactivator that directly binds nuclear receptors and stimulates the transcriptional activities in a hormone-dependent fashion. Involved in the coactivation of different nuclear receptors, such as for steroids (PGR, GR and ER), retinoids (RXRs), thyroid hormone (TRs) and prostanoids (PPARs). Also involved in coactivation mediated by STAT3, STAT5A, STAT5B and STAT6 transcription factors. Displays histone acetyltransferase activity toward H3 and H4; the relevance of such activity remains however unclear. Plays a central role in creating multisubunit coactivator complexes that act via remodeling of chromatin, and possibly acts by participating in both chromatin remodeling and recruitment of general transcription factors. Required with NCOA2 to control energy balance between white and brown adipose tissues. Required for mediating steroid hormone response. Isoform 2 has a higher thyroid hormone-dependent transactivation activity than isoform 1 and isoform 3.<ref>PMID:9427757</ref> <ref>PMID:7481822</ref> <ref>PMID:9223431</ref> <ref>PMID:9296499</ref> <ref>PMID:9223281</ref> <ref>PMID:10449719</ref> <ref>PMID:12954634</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Structural modification of a series of dual LXRalpha/beta agonists led to the identification of a new class of LXRbeta partial agonists. An X-ray co-crystal structure shows that a representative member of this series, pyrrole 5, binds to LXRbeta with a reversed orientation compared to 1.


==Function==
Discovery of a new binding mode for a series of liver X receptor agonists.,Kopecky DJ, Jiao XY, Fisher B, McKendry S, Labelle M, Piper DE, Coward P, Shiau AK, Escaron P, Danao J, Chai A, Jaen J, Kayser F Bioorg Med Chem Lett. 2012 Apr 1;22(7):2407-10. Epub 2012 Feb 20. PMID:22406115<ref>PMID:22406115</ref>
[[http://www.uniprot.org/uniprot/NR1H2_HUMAN NR1H2_HUMAN]] Orphan receptor. Binds preferentially to double-stranded oligonucleotide direct repeats having the consensus half-site sequence 5'-AGGTCA-3' and 4-nt spacing (DR-4). Regulates cholesterol uptake through MYLIP-dependent ubiquitination of LDLR, VLDLR and LRP8 (By similarity). [[http://www.uniprot.org/uniprot/NCOA1_HUMAN NCOA1_HUMAN]] Nuclear receptor coactivator that directly binds nuclear receptors and stimulates the transcriptional activities in a hormone-dependent fashion. Involved in the coactivation of different nuclear receptors, such as for steroids (PGR, GR and ER), retinoids (RXRs), thyroid hormone (TRs) and prostanoids (PPARs). Also involved in coactivation mediated by STAT3, STAT5A, STAT5B and STAT6 transcription factors. Displays histone acetyltransferase activity toward H3 and H4; the relevance of such activity remains however unclear. Plays a central role in creating multisubunit coactivator complexes that act via remodeling of chromatin, and possibly acts by participating in both chromatin remodeling and recruitment of general transcription factors. Required with NCOA2 to control energy balance between white and brown adipose tissues. Required for mediating steroid hormone response. Isoform 2 has a higher thyroid hormone-dependent transactivation activity than isoform 1 and isoform 3.<ref>PMID:9427757</ref><ref>PMID:7481822</ref><ref>PMID:9223431</ref><ref>PMID:9296499</ref><ref>PMID:9223281</ref><ref>PMID:10449719</ref><ref>PMID:12954634</ref>
 
==About this Structure==
[[4dk8]] is a 4 chain structure with 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=4DK8 OCA].


==Reference==
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
<ref group="xtra">PMID:022406115</ref><references group="xtra"/><references/>
</div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Histone acetyltransferase]]
[[Category: Histone acetyltransferase]]
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
[[Category: Kopecky, D J.]]
[[Category: Kopecky, D J]]
[[Category: Piper, D E.]]
[[Category: Piper, D E]]
[[Category: Xu, H.]]
[[Category: Xu, H]]
[[Category: Ligand binding domain]]
[[Category: Ligand binding domain]]
[[Category: Nuclear hormone receptor]]
[[Category: Nuclear hormone receptor]]
[[Category: Transcription-peptide-agonist complex]]
[[Category: Transcription-peptide-agonist complex]]

Revision as of 12:08, 21 December 2014

Crystal structure of LXR ligand binding domain in complex with partial agonist 5Crystal structure of LXR ligand binding domain in complex with partial agonist 5

Structural highlights

4dk8 is a 4 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:, ,
Gene:NR1H2, LXRB, NER, UNR (Homo sapiens)
Activity:Histone acetyltransferase, with EC number 2.3.1.48
Resources:FirstGlance, OCA, RCSB, PDBsum

Disease

[NCOA1_HUMAN] Note=A chromosomal aberration involving NCOA1 is a cause of rhabdomyosarcoma. Translocation t(2;2)(q35;p23) with PAX3 generates the NCOA1-PAX3 oncogene consisting of the N-terminus part of PAX3 and the C-terminus part of NCOA1. The fusion protein acts as a transcriptional activator. Rhabdomyosarcoma is the most common soft tissue carcinoma in childhood, representing 5-8% of all malignancies in children.

Function

[NR1H2_HUMAN] Orphan receptor. Binds preferentially to double-stranded oligonucleotide direct repeats having the consensus half-site sequence 5'-AGGTCA-3' and 4-nt spacing (DR-4). Regulates cholesterol uptake through MYLIP-dependent ubiquitination of LDLR, VLDLR and LRP8 (By similarity). [NCOA1_HUMAN] Nuclear receptor coactivator that directly binds nuclear receptors and stimulates the transcriptional activities in a hormone-dependent fashion. Involved in the coactivation of different nuclear receptors, such as for steroids (PGR, GR and ER), retinoids (RXRs), thyroid hormone (TRs) and prostanoids (PPARs). Also involved in coactivation mediated by STAT3, STAT5A, STAT5B and STAT6 transcription factors. Displays histone acetyltransferase activity toward H3 and H4; the relevance of such activity remains however unclear. Plays a central role in creating multisubunit coactivator complexes that act via remodeling of chromatin, and possibly acts by participating in both chromatin remodeling and recruitment of general transcription factors. Required with NCOA2 to control energy balance between white and brown adipose tissues. Required for mediating steroid hormone response. Isoform 2 has a higher thyroid hormone-dependent transactivation activity than isoform 1 and isoform 3.[1] [2] [3] [4] [5] [6] [7]

Publication Abstract from PubMed

Structural modification of a series of dual LXRalpha/beta agonists led to the identification of a new class of LXRbeta partial agonists. An X-ray co-crystal structure shows that a representative member of this series, pyrrole 5, binds to LXRbeta with a reversed orientation compared to 1.

Discovery of a new binding mode for a series of liver X receptor agonists.,Kopecky DJ, Jiao XY, Fisher B, McKendry S, Labelle M, Piper DE, Coward P, Shiau AK, Escaron P, Danao J, Chai A, Jaen J, Kayser F Bioorg Med Chem Lett. 2012 Apr 1;22(7):2407-10. Epub 2012 Feb 20. PMID:22406115[8]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

  1. ↑ Kalkhoven E, Valentine JE, Heery DM, Parker MG. Isoforms of steroid receptor co-activator 1 differ in their ability to potentiate transcription by the oestrogen receptor. EMBO J. 1998 Jan 2;17(1):232-43. PMID:9427757 doi:10.1093/emboj/17.1.232
  2. ↑ Onate SA, Tsai SY, Tsai MJ, O'Malley BW. Sequence and characterization of a coactivator for the steroid hormone receptor superfamily. Science. 1995 Nov 24;270(5240):1354-7. PMID:7481822
  3. ↑ Hayashi Y, Ohmori S, Ito T, Seo H. A splicing variant of Steroid Receptor Coactivator-1 (SRC-1E): the major isoform of SRC-1 to mediate thyroid hormone action. Biochem Biophys Res Commun. 1997 Jul 9;236(1):83-7. PMID:9223431 doi:10.1006/bbrc.1997.6911
  4. ↑ Spencer TE, Jenster G, Burcin MM, Allis CD, Zhou J, Mizzen CA, McKenna NJ, Onate SA, Tsai SY, Tsai MJ, O'Malley BW. Steroid receptor coactivator-1 is a histone acetyltransferase. Nature. 1997 Sep 11;389(6647):194-8. PMID:9296499 doi:10.1038/38304
  5. ↑ Jenster G, Spencer TE, Burcin MM, Tsai SY, Tsai MJ, O'Malley BW. Steroid receptor induction of gene transcription: a two-step model. Proc Natl Acad Sci U S A. 1997 Jul 22;94(15):7879-84. PMID:9223281
  6. ↑ Liu Z, Wong J, Tsai SY, Tsai MJ, O'Malley BW. Steroid receptor coactivator-1 (SRC-1) enhances ligand-dependent and receptor-dependent cell-free transcription of chromatin. Proc Natl Acad Sci U S A. 1999 Aug 17;96(17):9485-90. PMID:10449719
  7. ↑ Litterst CM, Kliem S, Marilley D, Pfitzner E. NCoA-1/SRC-1 is an essential coactivator of STAT5 that binds to the FDL motif in the alpha-helical region of the STAT5 transactivation domain. J Biol Chem. 2003 Nov 14;278(46):45340-51. Epub 2003 Sep 3. PMID:12954634 doi:http://dx.doi.org/10.1074/jbc.M303644200
  8. ↑ Kopecky DJ, Jiao XY, Fisher B, McKendry S, Labelle M, Piper DE, Coward P, Shiau AK, Escaron P, Danao J, Chai A, Jaen J, Kayser F. Discovery of a new binding mode for a series of liver X receptor agonists. Bioorg Med Chem Lett. 2012 Apr 1;22(7):2407-10. Epub 2012 Feb 20. PMID:22406115 doi:10.1016/j.bmcl.2012.02.028

4dk8, resolution 2.75Å

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