Table 1.

Confirmed renal olfactory receptors

Human Olfactory ReceptorsMouse Olfactory ReceptorsRat Olfactory ReceptorsKnown LigandsReferences
OR51E2Olfr78Olr59Acetate, propionate, β-ionone, steroid hormones(11,12,13)
OR51E1Olfr558Olr63Valeric acid, isovaleric acid, methyl valeric acid, cyclobutene-carboxylic acid, norbonene-2-carboxylic acid, methylbutyric acid, hexanoic acid, heptanoic acid, decanoic acid, nonanoic acid, octanoic acid, methyl-nonanoic acid, decanoic acid, propionate, butyrate(14,15,16,17)
OR2A4Cyclohexyl salicylate
OR2AG1Amylbutyrate(12)
OR2T10Maltyl isobutyrate, cinnamaldehyde, vanillin, terpinyl acetate, α-damascone(18)
OR2A42α-pinene, farnesol(19)
OR1L8Unknown
OR2A1Unknown
OR51I1Unknown
OR52W1Unknown
OR56B1Unknown
OR5K2Unknown
OR9A4Unknown
OR10A2Unknown
OR51I2Unknown
Olfr691Short and medium chain fatty acids(20,21)
Olfr1393Cycloheptanol, cycloheptanone, cyclooctenone, cyclohexanone, 4,4 dimethylcyclohexanone, nopinone, norcamphor, 4-tertbutylcyclohexanone(22)
Olfr902-methyl-4-propyl-1,3-oxathiane, 1-octen-3-ol, 3-octanol, 2-octanol, 2-octanone, amyl acetate, linalool, 2-pentylfuran, 3-octanone, benzyl cyanide, 1-octanol, 2-octen-1–0l, allylbenzene, cinnamaldehyde(14)
Olfr1200Citris accord (mixture of limonene, γ-terpinene, citral)(23)
Olfr545Sebacid acid (conflicting reports)(20,24)
Olfr1392Unknown
Olfr1373Unknown
Olfr99Unknown
Olfr693Unknown
Olfr31Unknown
Olfr1426Unknown
Olfr56Unknown
Olfr461Unknown
Olfr1033Unknown
Olfr1034Unknown
Olfr1396Unknown
Olfr1694Unknown
Olfr95Unknown
Olfr796Unknown
Olfr1303Unknown
Olfr239Unknown
Olfr373Unknown
Olr560Unknown
Olr1104Unknown
Olr1694Unknown