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4rmc

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Revision as of 16:55, 16 November 2017

Crystal Structure of human retinoid X receptor alpha-ligand binding domain complex with 9cUAB76 and the coactivator peptide GRIP-1

Structural highlights

4rmc is a 2 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
Related:	3oap, 4k4j
Gene:	NR2B1, RXRA, RXRA NR2B1 (HUMAN)
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

[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] [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.^[5]

Publication Abstract from PubMed

(2E,4E,6Z,8Z)-8-(3',4'-Dihydro-1'(2H)-naphthalen-1'-ylidene)-3,7-dimethyl-2,3,6-o ctatrienoinic acid (UAB30) is currently undergoing clinical evaluation as a novel cancer prevention agent. In efforts to develop even more highly potent rexinoids that prevent breast cancer without toxicity, we further explore here the structure-activity relationship of two separate classes of rexinoids. UAB30 belongs to the class II rexinoids and possesses a 9Z-tetraenoic acid chain bonded to a tetralone ring, whereas the class I rexinoids contain the same 9Z-tetraenoic acid chain bonded to a disubstituted cyclohexenyl ring. Among the 12 class I and class II rexinoids evaluated, the class I rexinoid 11 is most effective in preventing breast cancers in an in vivo rat model alone or in combination with tamoxifen. Rexinoid 11 also reduces the size of established tumors and exhibits a therapeutic effect. However, 11 induces hypertriglyceridemia at its effective dose. On the other hand rexinoid 10 does not increase triglyceride levels while being effective in the in vivo chemoprevention assay. X-ray studies of four rexinoids bound to the ligand binding domain of the retinoid X receptor reveal key structural aspects that enhance potency as well as those that enhance the synthesis of lipids.

Conformationally Defined Rexinoids and Their Efficacy in the Prevention of Mammary Cancers.,Atigadda VR, Xia G, Deshpande A, Wu L, Kedishvili N, Smith CD, Krontiras H, Bland KI, Grubbs CJ, Brouillette WJ, Muccio DD J Med Chem. 2015 Oct 8;58(19):7763-74. doi: 10.1021/acs.jmedchem.5b00829. Epub, 2015 Sep 22. PMID:26331194^[6]

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
↑ 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
↑ Atigadda VR, Xia G, Deshpande A, Wu L, Kedishvili N, Smith CD, Krontiras H, Bland KI, Grubbs CJ, Brouillette WJ, Muccio DD. Conformationally Defined Rexinoids and Their Efficacy in the Prevention of Mammary Cancers. J Med Chem. 2015 Oct 8;58(19):7763-74. doi: 10.1021/acs.jmedchem.5b00829. Epub, 2015 Sep 22. PMID:26331194 doi:http://dx.doi.org/10.1021/acs.jmedchem.5b00829

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/4rmc"

@@ Line 1: / Line 1: @@
 ==Crystal Structure of human retinoid X receptor alpha-ligand binding domain complex with 9cUAB76 and the coactivator peptide GRIP-1==
 <StructureSection load='4rmc' size='340' side='right' caption='[[4rmc]], [[Resolution|resolution]] 2.70&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[4rmc]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4RMC OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4RMC FirstGlance]. <br>
+<table><tr><td colspan='2'>[[4rmc]] is a 2 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=4RMC OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4RMC FirstGlance]. <br>
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=3SV:(3S,7S,8E)-8-[3-ETHYL-2-(3-METHYLBUTYL)CYCLOHEX-2-EN-1-YLIDENE]-3,7-DIMETHYLOCTANOIC+ACID'>3SV</scene></td></tr>
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3oap|3oap]], [[4k4j|4k4j]]</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=4rmc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4rmc OCA], [http://pdbe.org/4rmc PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4rmc RCSB], [http://www.ebi.ac.uk/pdbsum/4rmc PDBsum]</span></td></tr>
+<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">NR2B1, RXRA, RXRA NR2B1 ([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'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4rmc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4rmc OCA], [http://pdbe.org/4rmc PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4rmc RCSB], [http://www.ebi.ac.uk/pdbsum/4rmc PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4rmc ProSAT]</span></td></tr>
 </table>
 == Disease ==
@@ Line 24: / Line 26: @@
 __TOC__
 </StructureSection>
+[[Category: Human]]
 [[Category: Muccio, D D]]
 [[Category: Xia, G]]

4rmc

From Proteopedia

Revision as of 16:55, 16 November 2017

Crystal Structure of human retinoid X receptor alpha-ligand binding domain complex with 9cUAB76 and the coactivator peptide GRIP-1

Structural highlights

Disease

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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