Relaxin/insulin-like family peptide receptor 2

Available structures

Ortholog search: PDBe, RCSB

List of PDB id codes
2M96

Identifiers

Symbols

RXFP2 ; GPR106; GREAT; INSL3R; LGR8; LGR8.1; RXFPR2

External IDs

OMIM: 606655 MGI: 2153463 HomoloGene: 15402 IUPHAR: 352 ChEMBL: 1628482 GeneCards: RXFP2 Gene

Gene ontology
Molecular function	• protein-hormone receptor activity • peptide hormone binding
Cellular component	• plasma membrane • integral component of membrane
Biological process	• oocyte maturation • adenylate cyclase-activating G-protein coupled receptor signaling pathway • adenylate cyclase-inhibiting G-protein coupled receptor signaling pathway • negative regulation of cell proliferation • male gonad development • positive regulation of cAMP biosynthetic process • negative regulation of apoptotic process
Sources: Amigo / QuickGO

Orthologs

Species

Human

Mouse

RefSeq (mRNA)

RefSeq (protein)

Location (UCSC)

Chr 13:
31.74 – 31.8 Mb

Chr 5:
150.02 – 150.08 Mb

PubMed search

Relaxin/insulin-like family peptide receptor 2, also known as RXFP2, is a human G-protein coupled receptor.^[1]

The receptors for glycoprotein hormones such as follicle-stimulating hormone (FSH; see MIM 136530) and thyroid-stimulating hormone (TSH; see MIM 188540) are G protein-coupled, 7-transmembrane receptors (GPCRs) with large N-terminal extracellular domains. Leucine-rich repeat (LRR)-containing GPCRs (LGRs) form a subgroup of the GPCR superfamily.[supplied by OMIM]^[1]

References

1 2 "Entrez Gene: RXFP2 relaxin/insulin-like family peptide receptor 2".

External links

"Relaxin Family Peptide Receptors: RXFP2". IUPHAR Database of Receptors and Ion Channels. International Union of Basic and Clinical Pharmacology.

Bathgate RA, Ivell R, Sanborn BM, et al. (2005). "Receptors for relaxin family peptides". Ann. N. Y. Acad. Sci. 1041: 61–76. doi:10.1196/annals.1282.010. PMID 15956688.
Bathgate RA, Ivell R, Sanborn BM, et al. (2006). "International Union of Pharmacology LVII: recommendations for the nomenclature of receptors for relaxin family peptides". Pharmacol. Rev. 58 (1): 7–31. doi:10.1124/pr.58.1.9. PMID 16507880.
Hsu SY, Nakabayashi K, Nishi S, et al. (2002). "Activation of orphan receptors by the hormone relaxin". Science 295 (5555): 671–4. doi:10.1126/science.1065654. PMID 11809971.
Kumagai J, Hsu SY, Matsumi H, et al. (2002). "INSL3/Leydig insulin-like peptide activates the LGR8 receptor important in testis descent". J. Biol. Chem. 277 (35): 31283–6. doi:10.1074/jbc.C200398200. PMID 12114498.
Gorlov IP, Kamat A, Bogatcheva NV, et al. (2003). "Mutations of the GREAT gene cause cryptorchidism". Hum. Mol. Genet. 11 (19): 2309–18. doi:10.1093/hmg/11.19.2309. PMID 12217959.
Sudo S, Kumagai J, Nishi S, et al. (2003). "H3 relaxin is a specific ligand for LGR7 and activates the receptor by interacting with both the ectodomain and the exoloop 2". J. Biol. Chem. 278 (10): 7855–62. doi:10.1074/jbc.M212457200. PMID 12506116.
Ferlin A, Simonato M, Bartoloni L, et al. (2003). "The INSL3-LGR8/GREAT ligand-receptor pair in human cryptorchidism". J. Clin. Endocrinol. Metab. 88 (9): 4273–9. doi:10.1210/jc.2003-030359. PMID 12970298.
Roh J, Virtanen H, Kumagai J, et al. (2004). "Lack of LGR8 gene mutation in Finnish patients with a family history of cryptorchidism". Reprod. Biomed. Online 7 (4): 400–6. doi:10.1016/S1472-6483(10)61883-4. PMID 14656401.
Vinci G, Anjot MN, Trivin C, et al. (2005). "An analysis of the genetic factors involved in testicular descent in a cohort of 14 male patients with anorchia". J. Clin. Endocrinol. Metab. 89 (12): 6282–5. doi:10.1210/jc.2004-0891. PMID 15579790.
Büllesbach EE, Schwabe C (2005). "LGR8 signal activation by the relaxin-like factor". J. Biol. Chem. 280 (15): 14586–90. doi:10.1074/jbc.M414443200. PMID 15708846.
Muda M, He C, Martini PG, et al. (2005). "Splice variants of the relaxin and INSL3 receptors reveal unanticipated molecular complexity". Mol. Hum. Reprod. 11 (8): 591–600. doi:10.1093/molehr/gah205. PMID 16051677.
Rosengren KJ, Zhang S, Lin F, et al. (2006). "Solution structure and characterization of the LGR8 receptor binding surface of insulin-like peptide 3". J. Biol. Chem. 281 (38): 28287–95. doi:10.1074/jbc.M603829200. PMID 16867980.
Bogatcheva NV, Ferlin A, Feng S, et al. (2007). "T222P mutation of the insulin-like 3 hormone receptor LGR8 is associated with testicular maldescent and hinders receptor expression on the cell surface membrane". Am. J. Physiol. Endocrinol. Metab. 292 (1): E138–44. doi:10.1152/ajpendo.00228.2006. PMID 16926383.
Scott DJ, Layfield S, Yan Y, et al. (2007). "Characterization of novel splice variants of LGR7 and LGR8 reveals that receptor signaling is mediated by their unique low density lipoprotein class A modules". J. Biol. Chem. 281 (46): 34942–54. doi:10.1074/jbc.M602728200. PMID 16963451.
El Houate B, Rouba H, Sibai H, et al. (2007). "Novel mutations involving the INSL3 gene associated with cryptorchidism". J. Urol. 177 (5): 1947–51. doi:10.1016/j.juro.2007.01.002. PMID 17437853.
Scott DJ, Wilkinson TN, Zhang S, et al. (2007). "Defining the LGR8 residues involved in binding insulin-like peptide 3". Mol. Endocrinol. 21 (7): 1699–712. doi:10.1210/me.2007-0097. PMID 17473281.

This article incorporates text from the United States National Library of Medicine, which is in the public domain.

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)

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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Relaxin/insulin-like family peptide receptor 2

See also

References

External links

Further reading