Retinoid X receptor-γ | 2B. Retinoid X receptors | IUPHAR/BPS Guide to PHARMACOLOGY

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Retinoid X receptor-γ

Target not currently curated in GtoImmuPdb

Target id: 612

Nomenclature: Retinoid X receptor-γ

Systematic Nomenclature: NR2B3

Family: 2B. Retinoid X receptors

Annotation status:  image of a green circle Annotated and expert reviewed. Please contact us if you can help with updates.  » Email us

Gene and Protein Information
Species AA Chromosomal Location Gene Symbol Gene Name Reference
Human 463 1q22-q23 RXRG retinoid X receptor gamma 2,23
Mouse 463 1 88.1 cM Rxrg retinoid X receptor gamma 14,19-20,23
Rat 463 13q24 Rxrg retinoid X receptor gamma 3
Previous and Unofficial Names
nuclear receptor subfamily 2 group B member 3 | retinoic acid receptor RXR-gamma | retinoid X receptor, gamma | RXRγ
Database Links
Specialist databases
NURSA Receptor 10.1621/YJ1R6HD8T7 (Hs)
Other databases
ChEMBL Target
DrugBank Target
Ensembl Gene
Entrez Gene
Human Protein Atlas
RefSeq Nucleotide
RefSeq Protein
Selected 3D Structures
Image of receptor 3D structure from RCSB PDB
Description:  RXR-gamma - ligand-binding domain (Apostructure)
PDB Id:  2GL8
Resolution:  2.4Å
Species:  Human
Natural/Endogenous Ligands

Download all structure-activity data for this target as a CSV file

Key to terms and symbols View all chemical structures Click column headers to sort
Ligand Sp. Action Value Parameter Reference
AGN194204 N/A Agonist 8.4 pKd 32
pKd 8.4 [32]
[3H]9-cis-retinoic acid Mm Full agonist 7.9 pKd 1
pKd 7.9 (Kd 1.41x10-8 M) [1]
compound 28 [Heitel et al., 2019] Hs Agonist 5.8 pEC50 12
pEC50 5.8 (EC50 1.6x10-6 M) [12]
LG100268 N/A Agonist 8.0 – 8.5 pIC50 4,17,29
pIC50 8.0 – 8.5 [4,17,29]
bexarotene Hs Agonist 7.5 pIC50 5,7,29
pIC50 7.5 [5,7,29]
alitretinoin Hs Agonist 7.0 – 8.0 pIC50 1,13,17,21,23,27
pIC50 7.0 – 8.0 [1,13,17,21,23,27]
View species-specific agonist tables
Key to terms and symbols View all chemical structures Click column headers to sort
Ligand Sp. Action Value Parameter Reference
LG100754 N/A Antagonist 7.9 pKi 17
pKi 7.9 (Ki 1.22x10-8 M) [17]
DNA Binding
Structure:  Homodimer, Heterodimer, RXR partner
HRE core sequence:  5’-AGGTCA
Response element:  DR1, DR2, DR3, DR4, DR5
DNA Binding Comments
RXR can bind to several DR elements as common heterodimerization partners for members of the subfamily 1 of nuclear receptors. In direct repeats, RXR generally occupies the 5’-element. RXR can also form RXR-RXR homodimers that bind to DR1.
Name Interaction Effect Reference
Co-binding Partners Comments
Binding partners are the same as RXRα.
Main Co-regulators
Name Activity Specific Ligand dependent AF-2 dependent Comments References
NCOA1 Co-activator No Yes Yes 18,26,28
NCOA2 Co-activator No Yes Yes 18,30-31
NCOA3 Co-activator No Yes Yes 8,18,26
Tissue Distribution
Muscle, brain
Species:  Mouse
Technique:  Northern, in situ, Western, other
References:  9-11,22-23
Tissue Distribution Comments
RXRγ displays the highest restricted expression pattern of the three RXRs.The RXRγ1 isoform is expressed in brain and muscle, whereas RXRγ2 is highly expressed in both cardiac and skeletal muscles. Similar expression pattern observed in the rat.
Physiological Consequences of Altering Gene Expression
Knockout mice are viable and fertile but show metabolic and behavorial defects.
Species:  Mouse
Technique:  Knockout by homologous recombination in embryonic stem cells
References:  6,15-16,24-25
Phenotypes, Alleles and Disease Models Mouse data from MGI

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Allele Composition & genetic background Accession Phenotype Id Phenotype Reference
Rxrgtm1Ysa Rxrgtm1Ysa/Rxrgtm1Ysa
either: (involves: 129S2/SvPas * C57BL/6) or (involves: 129S2/SvPas * C57BL/6 * ICR)
MGI:98216  MP:0004077 abnormal striatum morphology PMID: 10336693 
Rxrgtm2Ysa Rxrgtm2Ysa/Rxrgtm2Ysa
involves: C57BL/6 * CBA
MGI:98216  MP:0004077 abnormal striatum morphology PMID: 10336693 
Rxrgtm1Ysa Rxrgtm1Ysa/Rxrgtm1Ysa
either: (involves: 129S2/SvPas * C57BL/6) or (involves: 129S2/SvPas * C57BL/6 * ICR)
MGI:98216  MP:0002822 catalepsy PMID: 10336693 
Rxrgtm1Ysa Rxrgtm1Ysa/Rxrgtm1Ysa
MGI:98216  MP:0004037 increased muscle relaxation PMID: 10336693 
Rxrgtm1Ipc Rxrgtm1Ipc/Rxrgtm1Ipc
involves: 129S2/SvPas
MGI:98216  MP:0002169 no abnormal phenotype detected PMID: 8799145 
Rxrgtm1Ysa Rxrgtm1Ysa/Rxrgtm1Ysa
either: (involves: 129S2/SvPas * C57BL/6) or (involves: 129S2/SvPas * C57BL/6 * ICR)
MGI:98216  MP:0002083 premature death PMID: 10336693 


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2. Almasan A, Mangelsdorf DJ, Ong ES, Wahl GM, Evans RM. (1994) Chromosomal localization of the human retinoid X receptors. Genomics, 20 (3): 397-403. [PMID:8034312]

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8. Chen H, Lin RJ, Schiltz RL, Chakravarti D, Nash A, Nagy L, Privalsky ML, Nakatani Y, Evans RM. (1997) Nuclear receptor coactivator ACTR is a novel histone acetyltransferase and forms a multimeric activation complex with P/CAF and CBP/p300. Cell, 90 (3): 569-80. [PMID:9267036]

9. Chiang MY, Misner D, Kempermann G, Schikorski T, Giguère V, Sucov HM, Gage FH, Stevens CF, Evans RM. (1998) An essential role for retinoid receptors RARbeta and RXRgamma in long-term potentiation and depression. Neuron, 21 (6): 1353-61. [PMID:9883728]

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11. Haugen BR, Brown NS, Wood WM, Gordon DF, Ridgway EC. (1997) The thyrotrope-restricted isoform of the retinoid-X receptor-gamma1 mediates 9-cis-retinoic acid suppression of thyrotropin-beta promoter activity. Mol. Endocrinol., 11 (4): 481-9. [PMID:9092800]

12. Heitel P, Gellrich L, Kalinowsky L, Heering J, Kaiser A, Ohrndorf J, Proschak E, Merk D. (2019) Computer-Assisted Discovery and Structural Optimization of a Novel Retinoid X Receptor Agonist Chemotype. ACS Med Chem Lett, 10 (2): 203-208. DOI: 10.1021/acsmedchemlett.8b00551 [PMID:30783504]

13. Heyman RA, Mangelsdorf DJ, Dyck JA, Stein RB, Eichele G, Evans RM, Thaller C. (1992) 9-cis retinoic acid is a high affinity ligand for the retinoid X receptor. Cell, 68 (2): 397-406. [PMID:1310260]

14. Hoopes CW, Taketo M, Ozato K, Liu Q, Howard TA, Linney E, Seldin MF. (1992) Mapping of the mouse Rxr loci encoding nuclear retinoid X receptors RXR alpha, RXR beta, and RXR gamma. Genomics, 14 (3): 611-7. [PMID:1358808]

15. Krezel W, Dupé V, Mark M, Dierich A, Kastner P, Chambon P. (1996) RXR gamma null mice are apparently normal and compound RXR alpha +/-/RXR beta -/-/RXR gamma -/- mutant mice are viable. Proc. Natl. Acad. Sci. U.S.A., 93 (17): 9010-4. [PMID:8799145]

16. Krezel W, Ghyselinck N, Samad TA, Dupé V, Kastner P, Borrelli E, Chambon P. (1998) Impaired locomotion and dopamine signaling in retinoid receptor mutant mice. Science, 279 (5352): 863-7. [PMID:9452386]

17. Lala DS, Mukherjee R, Schulman IG, Koch SS, Dardashti LJ, Nadzan AM, Croston GE, Evans RM, Heyman RA. (1996) Activation of specific RXR heterodimers by an antagonist of RXR homodimers. Nature, 383 (6599): 450-3. [PMID:8837780]

18. Laudet V, Gronemeyer H. (2002) The Nuclear Receptor Facts Book. In The Nuclear Receptor Facts Book. (Academic Press) .

19. Leid M, Kastner P, Chambon P. (1992) Multiplicity generates diversity in the retinoic acid signalling pathways. Trends Biochem. Sci., 17 (10): 427-33. [PMID:1333659]

20. Leid M, Kastner P, Lyons R, Nakshatri H, Saunders M, Zacharewski T, Chen JY, Staub A, Garnier JM, Mader S. (1992) Purification, cloning, and RXR identity of the HeLa cell factor with which RAR or TR heterodimerizes to bind target sequences efficiently. Cell, 68 (2): 377-95. [PMID:1310259]

21. Levin AA, Sturzenbecker LJ, Kazmer S, Bosakowski T, Huselton C, Allenby G, Speck J, Kratzeisen C, Rosenberger M, Lovey A. (1992) 9-cis retinoic acid stereoisomer binds and activates the nuclear receptor RXR alpha. Nature, 355 (6358): 359-61. [PMID:1309942]

22. Liu Q, Linney E. (1993) The mouse retinoid-X receptor-gamma gene: genomic organization and evidence for functional isoforms. Mol. Endocrinol., 7 (5): 651-8. [PMID:8391126]

23. Mangelsdorf DJ, Borgmeyer U, Heyman RA, Zhou JY, Ong ES, Oro AE, Kakizuka A, Evans RM. (1992) Characterization of three RXR genes that mediate the action of 9-cis retinoic acid. Genes Dev., 6 (3): 329-44. [PMID:1312497]

24. Mark M, Chambon P. (2003) Functions of RARs and RXRs in vivo: genetic dissection of the retinoid signaling pathway. Pure Appl Chem, 75: 1709-1732.

25. Mark M, Ghyselinck NB, Chambon P. (2006) Function of retinoid nuclear receptors: lessons from genetic and pharmacological dissections of the retinoic acid signaling pathway during mouse embryogenesis. Annu. Rev. Pharmacol. Toxicol., 46: 451-80. [PMID:16402912]

26. McKenna NJ, Lanz RB, O'Malley BW. (1999) Nuclear receptor coregulators: cellular and molecular biology. Endocr. Rev., 20 (3): 321-44. [PMID:10368774]

27. Nagy L, Thomázy VA, Shipley GL, Fésüs L, Lamph W, Heyman RA, Chandraratna RA, Davies PJ. (1995) Activation of retinoid X receptors induces apoptosis in HL-60 cell lines. Mol. Cell. Biol., 15 (7): 3540-51. [PMID:7791761]

28. Oñate SA, Tsai SY, Tsai MJ, O'Malley BW. (1995) Sequence and characterization of a coactivator for the steroid hormone receptor superfamily. Science, 270 (5240): 1354-7. [PMID:7481822]

29. Thacher SM, Vasudevan J, Chandraratna RA. (2000) Therapeutic applications for ligands of retinoid receptors. Curr. Pharm. Des., 6 (1): 25-58. [PMID:10637371]

30. Voegel JJ, Heine MJ, Tini M, Vivat V, Chambon P, Gronemeyer H. (1998) The coactivator TIF2 contains three nuclear receptor-binding motifs and mediates transactivation through CBP binding-dependent and -independent pathways. EMBO J., 17 (2): 507-19. [PMID:9430642]

31. Voegel JJ, Heine MJ, Zechel C, Chambon P, Gronemeyer H. (1996) TIF2, a 160 kDa transcriptional mediator for the ligand-dependent activation function AF-2 of nuclear receptors. EMBO J., 15 (14): 3667-75. [PMID:8670870]

32. Vuligonda V, Thacher SM, Chandraratna RA. (2001) Enantioselective syntheses of potent retinoid X receptor ligands: differential biological activities of individual antipodes. J. Med. Chem., 44 (14): 2298-303. [PMID:11428923]

How to cite this page

2B. Retinoid X receptors: Retinoid X receptor-γ. Last modified on 23/04/2019. Accessed on 13/08/2020. IUPHAR/BPS Guide to PHARMACOLOGY,