Nomenclature	Vitamin D receptor	Pregnane X receptor	Constitutive androstane receptor
Systematic nomenclature	NR1I1	NR1I2	NR1I3
HGNC, UniProt	VDR, P11473	NR1I2, O75469	NR1I3, Q14994
Endogenous agonists	1,25‐dihydroxyvitamin D3 (pK d 8.9–9.2) [12, 39]	17β‐estradiol (Selective) [64]	–
Selective agonists	seocalcitol (pK d 9.6) [29, 157], doxercalciferol	hyperforin (pEC50 7.6) [106, 156], 5β‐pregnane‐3,20‐dione (pIC50 6.4) [64], lovastatin (pEC50 5.3–6) [82], rifampicin (pEC50 5.5–6) [16, 82]	TCPOBOP (pEC50 7.7) [149] – Mouse, CITCO (pEC50 7.3) [92]
Selective antagonists	TEI‐9647 (pIC50 8.2) [128] – Chicken, ZK159222 (pIC50 7.5) [42, 60]	–	–
Comments	–	–	clotrimazole [107] and T0901317 [69] although acting at other sites, function as antagonists of the constitutive androstane receptor.