Nuclear Receptor - Family Members

Family Members

The following is a list of the 48 known human nuclear receptors categorized according to sequence homology.


Subfamily Group Member
NRNC Symbol Abbreviation Name Gene Ligand(s)
1 Thyroid Hormone Receptor-like A Thyroid hormone receptor NR1A1 TRα Thyroid hormone receptor-α THRA thyroid hormone
NR1A2 TRβ Thyroid hormone receptor-β THRB
B Retinoic acid receptor NR1B1 RARα Retinoic acid receptor-α RARA vitamin A and related compounds
NR1B2 RARβ Retinoic acid receptor-β RARB
NR1B3 RARγ Retinoic acid receptor-γ RARG
C Peroxisome proliferator-activated receptor NR1C1 PPARα Peroxisome proliferator-activated receptor-α PPARA fatty acids, prostaglandins
NR1C2 PPAR-β/δ Peroxisome proliferator-activated receptor-β/δ PPARD
NR1C3 PPARγ Peroxisome proliferator-activated receptor-γ PPARG
D Rev-ErbA NR1D1 Rev-ErbAα Rev-ErbAα NR1D1 heme
NR1D2 Rev-ErbAβ Rev-ErbAα NR1D2
F RAR-related orphan receptor NR1F1 RORα RAR-related orphan receptor-α RORA cholesterol, ATRA
NR1F2 RORβ RAR-related orphan receptor-β RORB
NR1F3 RORγ RAR-related orphan receptor-γ RORC
H Liver X receptor-like NR1H3 LXRα Liver X receptor-α NR1H3 oxysterols
NR1H2 LXRβ Liver X receptor-β NR1H2
NR1H4 FXR Farnesoid X receptor NR1H4
I Vitamin D receptor-like NR1I1 VDR Vitamin D receptor VDR vitamin D
NR1I2 PXR Pregnane X receptor NR1I2 xenobiotics
NR1I3 CAR Constitutive androstane receptor NR1I3 androstane
X NRs with two DNA binding domains NR1X1 2DBD-NRα
NR1X2 2DBD-NRβ
NR1X3 2DBD-NRγ
2 Retinoid X Receptor-like A Hepatocyte nuclear factor-4 NR2A1 HNF4α Hepatocyte nuclear factor-4-α HNF4A fatty acids
NR2A2 HNF4γ Hepatocyte nuclear factor-4-γ HNF4G
B Retinoid X receptor NR2B1 RXRα Retinoid X receptor-α RXRA retinoids
NR2B2 RXRβ Retinoid X receptor-β RXRB
NR2B3 RXRγ Retinoid X receptor-γ RXRG
C Testicular receptor NR2C1 TR2 Testicular receptor 2 NR2C1
NR2C2 TR4 Testicular receptor 4 NR2C2
E TLX/PNR NR2E1 TLX Homologue of the Drosophila tailless gene NR2E1
NR2E3 PNR Photoreceptor cell-specific nuclear receptor NR2E3
F COUP/EAR NR2F1 COUP-TFI Chicken ovalbumin upstream promoter-transcription factor I NR2F1
NR2F2 COUP-TFII Chicken ovalbumin upstream promoter-transcription factor II NR2F2
NR2F6 EAR-2 V-erbA-related NR2F6
3 Estrogen Receptor-like A Estrogen receptor NR3A1 ERα Estrogen receptor-α ESR1 estrogens
NR3A2 ERβ Estrogen receptor-β ESR2
B Estrogen related receptor NR3B1 ERRα Estrogen-related receptor-α ESRRA
NR3B2 ERRβ Estrogen-related receptor-β ESRRB
NR3B3 ERRγ Estrogen-related receptor-γ ESRRG
C 3-Ketosteroid receptors NR3C1 GR Glucocorticoid receptor NR3C1 cortisol
NR3C2 MR Mineralocorticoid receptor NR3C2 aldosterone
NR3C3 PR Progesterone receptor PGR progesterone
NR3C4 AR Androgen receptor AR testosterone
4 Nerve Growth Factor IB-like A NGFIB/NURR1/NOR1 NR4A1 NGFIB Nerve Growth factor IB NR4A1
NR4A2 NURR1 Nuclear receptor related 1 NR4A2
NR4A3 NOR1 Neuron-derived orphan receptor 1 NR4A3
5 Steroidogenic Factor-like A SF1/LRH1 NR5A1 SF1 Steroidogenic factor 1 NR5A1 phosphatidylinositols
NR5A2 LRH-1 Liver receptor homolog-1 NR5A2 phosphatidylinositols
6 Germ Cell Nuclear Factor-like A GCNF NR6A1 GCNF Germ cell nuclear factor NR6A1
0 Miscellaneous B DAX/SHP NR0B1 DAX1 Dosage-sensitive sex reversal, adrenal hypoplasia critical region, on chromosome X, gene 1 NR0B1
NR0B2 SHP Small heterodimer partner NR0B2

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