Vomeronasal receptor

Vomeronasal receptor, type 1

Identifiers

Symbol

Vmron_rcpt_1

Available protein structures:
Pfam	structures
PDB	RCSB PDB; PDBe; PDBj
PDBsum	structure summary

Pheromones have evolved in all animal phyla, to signal sex and dominance status, and are responsible for stereotypical social and sexual behaviour among members of the same species. In mammals, these chemical signals are believed to be detected primarily by the vomeronasal organ (VNO), a chemosensory organ located at the base of the nasal septum.^[1]

The VNO is present in most amphibia, reptiles and non-primate mammals but is absent in birds, adult catarrhine monkeys and apes.^[2] An active role for the human VNO in the detection of pheromones is disputed; the VNO is clearly present in the fetus but appears to be atrophied or absent in adults. Three distinct families of putative pheromone receptors have been identified in the vomeronasal organ (V1Rs, V2Rs and V3Rs). All are G protein-coupled receptors but are only distantly related to the receptors of the main olfactory system, highlighting their different role.^[1]

The V1 receptors share between 50 and 90% sequence identity but have little similarity to other families of G protein-coupled receptors. They appear to be distantly related to the mammalian T2R bitter taste receptors and the rhodopsin-like GPCRs.^[3] In rat, the family comprises 30-40 genes. These are expressed in the apical regions of the VNO, in neurons expressing Gi2. Coupling of the receptors to this protein mediates inositol trisphosphate signalling.^[1] A number of human V1 receptor homologues have also been found. The majority of these human sequences are pseudogenes ^[4]^[5] but an apparently functional receptor has been identified that is expressed in the human olfactory system.^[6]

Human proteins containing this domain

VN1R1; VN1R2; VN1R3; VN1R5;

References

1 2 3 Pantages E, Dulac C (Dec 2000). "A novel family of candidate pheromone receptors in mammals". Neuron. 28 (3): 835–45. doi:10.1016/S0896-6273(00)00157-4. PMID 11163270.
↑ Keverne EB (Oct 1999). "The vomeronasal organ". Science. 286 (5440): 716–20. doi:10.1126/science.286.5440.716. PMID 10531049.
↑ Josefsson LG (Nov 1999). "Evidence for kinship between diverse G-protein coupled receptors". Gene. 239 (2): 333–40. doi:10.1016/S0378-1119(99)00392-3. PMID 10548735.
↑ Kouros-Mehr H, Pintchovski S, Melnyk J, Chen YJ, Friedman C, Trask B, Shizuya H (Nov 2001). "Identification of non-functional human VNO receptor genes provides evidence for vestigiality of the human VNO". Chemical Senses. 26 (9): 1167–74. doi:10.1093/chemse/26.9.1167. PMID 11705802.
↑ Giorgi D, Friedman C, Trask BJ, Rouquier S (Dec 2000). "Characterization of nonfunctional V1R-like pheromone receptor sequences in human". Genome Research. 10 (12): 1979–85. doi:10.1101/gr.10.12.1979. PMC 313059. PMID 11116092.
↑ Rodriguez I, Greer CA, Mok MY, Mombaerts P (Sep 2000). "A putative pheromone receptor gene expressed in human olfactory mucosa". Nature Genetics. 26 (1): 18–9. doi:10.1038/79124. PMID 10973240.

This article incorporates text from the public domain Pfam and InterPro IPR004072

Cell surface receptor: G protein-coupled receptors

Class A: Rhodopsin like

Neurotransmitter

Adrenergic	α1 (A B D) α2 (A B C) β1 β2 β3

Purinergic	Adenosine (A1 A2A A2B A3) P2Y (1 2 4 5 6 8 9 10 11 12 13 14)

Serotonin	(all but 5-HT3) 5-HT1 (A B D E F) 5-HT2 (A B C) 5-HT (4 5A 6 7)

Other	Acetylcholine (M1 M2 M3 M4 M5) Dopamine (D1 D2 D3 D4 D5) Histamine (H1 H2 H3 H4) Melatonin (1A 1B 1C) TAAR (1 2 3 5 6 8 9)

Metabolites and
signaling molecules

Eicosanoid	CysLT (1 2) LTB4 (1 2) FPRL1 OXE Prostaglandin (DP (1 2), EP (1 2 3 4), FP) Prostacyclin Thromboxane

Other	Bile acid Cannabinoid (CB1 CB2, GPR (18 55 119)) EBI2 Estrogen Free fatty acid (1 2 3 4) Lactate Lysophosphatidic acid (1 2 3 4 5 6) Lysophospholipid (1 2 3 4 5 6 7 8) Niacin (1 2) Oxoglutarate PAF Sphingosine-1-phosphate (1 2 3 4 5) Succinate

Peptide

Neuropeptide	B/W (1 2) FF (1 2) S Y (1 2 4 5) Neuromedin (B U (1 2)) Neurotensin (1 2)

Other	Anaphylatoxin (C3a C5a) Angiotensin (1 2) Apelin Bombesin (BRS3 GRPR NMBR) Bradykinin (B1 B2) Chemokine Cholecystokinin (A B) Endothelin (A B) Formyl peptide (1 2 3) FSH Galanin (1 2 3) GHB receptor Gonadotropin-releasing hormone (1 2) Ghrelin Kisspeptin Luteinizing hormone/choriogonadotropin MAS (1 1L D E F G X1 X2 X3 X4) Melanocortin (1 2 3 4 5) MCHR (1 2) Motilin Opioid (Delta Kappa Mu Nociceptin & Zeta, but not Sigma) Orexin (1 2) Oxytocin Prokineticin (1 2) Prolactin-releasing peptide Relaxin (1 2 3 4) Somatostatin (1 2 3 4 5) Tachykinin (1 2 3) Thyrotropin Thyrotropin-releasing hormone Urotensin-II Vasopressin (1A 1B 2)

Miscellaneous

Orphan	GPR (1 3 4 6 12 15 17 18 19 20 21 22 23 25 26 27 31 32 33 34 35 37 39 42 44 45 50 52 55 61 62 63 65 68 75 77 78 81 82 83 84 85 87 88 92 101 103 109A 109B 119 120 132 135 137B 139 141 142 146 148 149 150 151 152 153 160 161 162 171 173 174 176 177 182 183)

Other	Adrenomedullin Olfactory Opsin (3 4 5 1LW 1MW 1SW RGR RRH) Protease-activated (1 2 3 4) SREB (1 2 3)

Class B: Secretin like

Adhesion	ADGRG (1 2 3 4 5 6 7)

Orphan	GPR (56 64 97 98 110 111 112 113 114 115 116 123 124 125 126 128 133 143 144 155 157)

Other	Brain-specific angiogenesis inhibitor (1 2 3) Cadherin (1 2 3) Calcitonin CALCRL CD97 Corticotropin-releasing hormone (1 2) EMR (1 2 3) Glucagon (GR GIPR GLP1R GLP2R) Growth hormone releasing hormone PACAPR1 GPR Latrophilin (1 2 3 ELTD1) Methuselah-like proteins Parathyroid hormone (1 2) Secretin Vasoactive intestinal peptide (1 2)

Class C: Metabotropic glutamate / pheromone

Taste	TAS1R (1 2 3) TAS2R (1 3 4 5 7 8 9 10 13 14 16 19 20 30 31 38 39 40 41 42 43 45 46 50 60 Vomeronasal receptor)

Other	Calcium-sensing receptor GABA B (1 2) Glutamate receptor (Metabotropic glutamate (1 2 3 4 5 6 7 8)) GPRC6A GPR (156 158 179) RAIG (1 2 3 4)

Class F: Frizzled / Smoothened

Frizzled	Frizzled (1 2 3 4 5 6 7 8 9 10)

Smoothened	Smoothened

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Vomeronasal receptor

Human proteins containing this domain

See also

References