7uw4

From Proteopedia

(Difference between revisions)

Current revision

Crystal structure of human Retinoid X receptor alpha ligand binding domain complex with UAB113 and coactivator peptide GRIP-1

Structural highlights

7uw4 is a 2 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 2.1Å
Ligands:
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

RXRA_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. The high affinity ligand for RXRs is 9-cis retinoic acid. RXRA serves as a common heterodimeric partner for a number of nuclear receptors. The RXR/RAR heterodimers bind to the retinoic acid response elements (RARE) composed of tandem 5'-AGGTCA-3' sites known as DR1-DR5. In the absence of ligand, the RXR-RAR heterodimers associate with a multiprotein complex containing transcription corepressors that induce histone acetylation, chromatin condensation and transcriptional suppression. On ligand binding, the corepressors dissociate from the receptors and associate with the coactivators leading to transcriptional activation. The RXRA/PPARA heterodimer is required for PPARA transcriptional activity on fatty acid oxidation genes such as ACOX1 and the P450 system genes.^[1] ^[2] ^[3] ^[4]

Publication Abstract from PubMed

Compound 1 is a potent rexinoid that is highly effective in cancer chemoprevention but elevates serum triglycerides. In an effort to separate the lipid toxicity from the anticancer activity of 1, we synthesized four new analogs of rexinoid 1, of which three rexinoids did not elevate serum triglycerides. Rexinoids 3 and 4 are twice as potent as rexinoid 1 in binding to Retinoid X receptor (RXR). All-trans retinoic acid (ATRA) plays a key role in maintaining skin homeostasis, and rexinoids 3-6 are highly effective in upregulating the genes responsible for the biosynthesis of ATRA. Inflammation plays a key role in skin cancer, and rexinoids 3 and 4 are highly effective in diminishing LPS-induced inflammation. Rexinoids 3 and 4 are highly effective in preventing UVB-induced nonmelanoma skin cancer (NMSC) without displaying any overt toxicities. Biophysical studies of rexinoids 3 and 5 bound to hRXRalpha-ligand binding domain (LBD) reveal important conformational and dynamical differences in the ligand binding domain.

Conformationally Defined Rexinoids for the Prevention of Inflammation and Nonmelanoma Skin Cancers.,Atigadda VR, Kashyap MP, Yang Z, Chattopadhyay D, Melo N, Sinha R, Belyaeva OV, Chou CF, Chang PL, Kedishvili NY, Grubbs CJ, Renfrow MB, Muccio DD, Elmets CA, Athar M J Med Chem. 2022 Nov 10;65(21):14409-14423. doi: 10.1021/acs.jmedchem.2c00735. , Epub 2022 Nov 1. PMID:36318154^[5]

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

References

↑ Gorla-Bajszczak A, Juge-Aubry C, Pernin A, Burger AG, Meier CA. Conserved amino acids in the ligand-binding and tau(i) domains of the peroxisome proliferator-activated receptor alpha are necessary for heterodimerization with RXR. Mol Cell Endocrinol. 1999 Jan 25;147(1-2):37-47. PMID:10195690
↑ Harish S, Ashok MS, Khanam T, Rangarajan PN. Serine 27, a human retinoid X receptor alpha residue, phosphorylated by protein kinase A is essential for cyclicAMP-mediated downregulation of RXRalpha function. Biochem Biophys Res Commun. 2000 Dec 29;279(3):853-7. PMID:11162439 doi:10.1006/bbrc.2000.4043
↑ Tsutsumi T, Suzuki T, Shimoike T, Suzuki R, Moriya K, Shintani Y, Fujie H, Matsuura Y, Koike K, Miyamura T. Interaction of hepatitis C virus core protein with retinoid X receptor alpha modulates its transcriptional activity. Hepatology. 2002 Apr;35(4):937-46. PMID:11915042 doi:10.1053/jhep.2002.32470
↑ Santos NC, Kim KH. Activity of retinoic acid receptor-alpha is directly regulated at its protein kinase A sites in response to follicle-stimulating hormone signaling. Endocrinology. 2010 May;151(5):2361-72. doi: 10.1210/en.2009-1338. Epub 2010 Mar , 9. PMID:20215566 doi:10.1210/en.2009-1338
↑ Atigadda VR, Kashyap MP, Yang Z, Chattopadhyay D, Melo N, Sinha R, Belyaeva OV, Chou CF, Chang PL, Kedishvili NY, Grubbs CJ, Renfrow MB, Muccio DD, Elmets CA, Athar M. Conformationally Defined Rexinoids for the Prevention of Inflammation and Nonmelanoma Skin Cancers. J Med Chem. 2022 Nov 10;65(21):14409-14423. PMID:36318154 doi:10.1021/acs.jmedchem.2c00735

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 See Also
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/7uw4"

Categories: Homo sapiens | Large Structures | Atigadda V | Chattopadhyay D | Yang Z

@@ Line 4: / Line 4: @@
 == Structural highlights ==
 <table><tr><td colspan='2'>[[7uw4]] is a 2 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=7UW4 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7UW4 FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=OI5:(2E,4E,6Z,8E)-3,7-dimethyl-8-[2-(3-methylbutyl)-3-propylcyclohex-2-en-1-ylidene]octa-2,4,6-trienoic+acid'>OI5</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]] 2.1&#8491;</td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=OI5:(2E,4E,6Z,8E)-3,7-dimethyl-8-[2-(3-methylbutyl)-3-propylcyclohex-2-en-1-ylidene]octa-2,4,6-trienoic+acid'>OI5</scene></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=7uw4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7uw4 OCA], [https://pdbe.org/7uw4 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7uw4 RCSB], [https://www.ebi.ac.uk/pdbsum/7uw4 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7uw4 ProSAT]</span></td></tr>
 </table>
@@ Line 18: / Line 19: @@
 </div>
 <div class="pdbe-citations 7uw4" style="background-color:#fffaf0;"></div>
+==See Also==
+*[[Retinoid X receptor 3D structures|Retinoid X receptor 3D structures]]
 == References ==
 <references/>

7uw4

From Proteopedia

Current revision

Crystal structure of human Retinoid X receptor alpha ligand binding domain complex with UAB113 and coactivator peptide GRIP-1

Structural highlights

Function

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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