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==X-ray structure of nuclear receptor ROR-gammat Ligand Binding Domain + SRC2 peptide==
==X-ray structure of nuclear receptor ROR-gammat Ligand Binding Domain + SRC2 peptide==
<StructureSection load='5vb3' size='340' side='right' caption='[[5vb3]], [[Resolution|resolution]] 1.95&Aring;' scene=''>
<StructureSection load='5vb3' size='340' side='right'caption='[[5vb3]], [[Resolution|resolution]] 1.95&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[5vb3]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5VB3 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5VB3 FirstGlance]. <br>
<table><tr><td colspan='2'>[[5vb3]] is a 1 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=5VB3 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5VB3 FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=NA:SODIUM+ION'>NA</scene></td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.95&#8491;</td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[5vb7|5vb7]], [[5vb6|5vb6]], [[5vb5|5vb5]]</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=NA:SODIUM+ION'>NA</scene></td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">RORC, NR1F3, RORG, RZRG ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=5vb3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5vb3 OCA], [https://pdbe.org/5vb3 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5vb3 RCSB], [https://www.ebi.ac.uk/pdbsum/5vb3 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5vb3 ProSAT]</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=5vb3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5vb3 OCA], [http://pdbe.org/5vb3 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5vb3 RCSB], [http://www.ebi.ac.uk/pdbsum/5vb3 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5vb3 ProSAT]</span></td></tr>
</table>
</table>
== Disease ==
[https://www.uniprot.org/uniprot/NCOA2_HUMAN NCOA2_HUMAN] Note=Chromosomal aberrations involving NCOA2 may be a cause of acute myeloid leukemias. Inversion inv(8)(p11;q13) generates the KAT6A-NCOA2 oncogene, which consists of the N-terminal part of KAT6A and the C-terminal part of NCOA2/TIF2. KAT6A-NCOA2 binds to CREBBP and disrupts its function in transcription activation.
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/RORG_HUMAN RORG_HUMAN]] Possible nuclear receptor for hydroxycholesterols, the binding of which strongly promotes coactivators recruitment. Essential for thymopoiesis and the development of several secondary lymphoid tissues, including lymph nodes. Involved in lineage specification of uncommitted CD4(+) T-helper cells into Th17 cells. Regulate the expression of several components of the circadian clock.  
[https://www.uniprot.org/uniprot/NCOA2_HUMAN NCOA2_HUMAN] Transcriptional coactivator for steroid receptors and nuclear receptors. Coactivator of the steroid binding domain (AF-2) but not of the modulating N-terminal domain (AF-1). Required with NCOA1 to control energy balance between white and brown adipose tissues.<ref>PMID:9430642</ref> [https://www.uniprot.org/uniprot/RORG_HUMAN RORG_HUMAN] Possible nuclear receptor for hydroxycholesterols, the binding of which strongly promotes coactivators recruitment. Essential for thymopoiesis and the development of several secondary lymphoid tissues, including lymph nodes. Involved in lineage specification of uncommitted CD4(+) T-helper cells into Th17 cells. Regulate the expression of several components of the circadian clock.
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The nuclear receptor retinoid acid receptor-related orphan receptor gammat (RORgammat) is a master regulator of the Th17/IL-17 pathway that plays crucial roles in the pathogenesis of autoimmunity. RORgammat has recently emerged as a highly promising target for treatment of a number of autoimmune diseases. Through high-throughput screening, we previously identified several classes of inverse agonists for RORgammat. Here, we report the crystal structures for the ligand-binding domain of RORgammat in both apo and ligand-bound states. We show that apo RORgammat adopts an active conformation capable of recruiting coactivator peptides and present a detailed analysis of the structural determinants that stabilize helix 12 (H12) of RORgammat in the active state in the absence of a ligand. The structures of ligand-bound RORgammat reveal that binding of the inverse agonists disrupts critical interactions that stabilize H12. This destabilizing effect is supported by ab initio calculations and experimentally by a normalized crystallographic B-factor analysis. Of note, the H12 destabilization in the active state shifts the conformational equilibrium of RORgammat toward an inactive state, which underlies the molecular mechanism of action for the inverse agonists reported here. Our findings highlight that nuclear receptor structure and function are dictated by a dynamic conformational equilibrium and that subtle changes in ligand structures can shift this equilibrium in opposite directions, leading to a functional switch from agonists to inverse agonists.
 
Structural studies unravel the active conformation of apo RORgammat nuclear receptor and a common inverse agonism of two diverse classes of RORgammat inhibitors.,Li X, Anderson M, Collin D, Muegge I, Wan J, Brennan D, Kugler S, Terenzio D, Kennedy C, Lin S, Labadia ME, Cook B, Hughes R, Farrow NA J Biol Chem. 2017 Jul 14;292(28):11618-11630. doi: 10.1074/jbc.M117.789024. Epub , 2017 May 25. PMID:28546429<ref>PMID:28546429</ref>
 
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 5vb3" style="background-color:#fffaf0;"></div>
== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Human]]
[[Category: Homo sapiens]]
[[Category: Li, X]]
[[Category: Large Structures]]
[[Category: Nuclear hormone receptor]]
[[Category: Li X]]
[[Category: Nuclear receptor]]
[[Category: Transcription]]

Latest revision as of 17:31, 6 March 2024

X-ray structure of nuclear receptor ROR-gammat Ligand Binding Domain + SRC2 peptideX-ray structure of nuclear receptor ROR-gammat Ligand Binding Domain + SRC2 peptide

Structural highlights

5vb3 is a 1 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 1.95Å
Ligands:
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Disease

NCOA2_HUMAN Note=Chromosomal aberrations involving NCOA2 may be a cause of acute myeloid leukemias. Inversion inv(8)(p11;q13) generates the KAT6A-NCOA2 oncogene, which consists of the N-terminal part of KAT6A and the C-terminal part of NCOA2/TIF2. KAT6A-NCOA2 binds to CREBBP and disrupts its function in transcription activation.

Function

NCOA2_HUMAN Transcriptional coactivator for steroid receptors and nuclear receptors. Coactivator of the steroid binding domain (AF-2) but not of the modulating N-terminal domain (AF-1). Required with NCOA1 to control energy balance between white and brown adipose tissues.[1] RORG_HUMAN Possible nuclear receptor for hydroxycholesterols, the binding of which strongly promotes coactivators recruitment. Essential for thymopoiesis and the development of several secondary lymphoid tissues, including lymph nodes. Involved in lineage specification of uncommitted CD4(+) T-helper cells into Th17 cells. Regulate the expression of several components of the circadian clock.

References

  1. ↑ Voegel JJ, Heine MJ, Tini M, Vivat V, Chambon P, Gronemeyer H. The coactivator TIF2 contains three nuclear receptor-binding motifs and mediates transactivation through CBP binding-dependent and -independent pathways. EMBO J. 1998 Jan 15;17(2):507-19. PMID:9430642 doi:10.1093/emboj/17.2.507

5vb3, resolution 1.95Å

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