GPR64

Last updated
ADGRG2
Identifiers
Aliases ADGRG2 , EDDM6, HE6, TM7LN2, GPR64, adhesion G protein-coupled receptor G2, CBAVDX
External IDs OMIM: 300572 MGI: 2446854 HomoloGene: 4208 GeneCards: ADGRG2
Orthologs
SpeciesHumanMouse
Entrez

10149

237175

Ensembl

ENSG00000173698

ENSMUSG00000031298

UniProt

Q8IZP9

Q8CJ12

RefSeq (mRNA)
RefSeq (protein)
Location (UCSC) Chr X: 18.99 – 19.12 Mb Chr X: 159.17 – 159.28 Mb
PubMed search [3] [4]
Wikidata
View/Edit Human View/Edit Mouse

G protein-coupled receptor 64 also known as HE6 is a protein encoded by the ADGRG2 gene. [5] GPR64 is a member of the adhesion GPCR family. [6] [7] Adhesion GPCRs are characterized by an extended extracellular region often possessing N-terminal protein modules that is linked to a TM7 region via a domain known as the GPCR-Autoproteolysis INducing (GAIN) domain. [8] [9]

Contents

The adhesion GPCR, GPR64, is an orphan receptor characterized by a long N-terminus with that has been suggested to be highly glycosylated. [10] GPR64's N-terminus has been reported to be cleaved at the GPS domain to allow for trafficking to the plasma membrane. After cleavage the N-terminus is believed to remain non-covalently associated with the 7TM. GPR64 expression has been mostly reported in the male reproductive organs, but more recently has been shown to be expressed in the parathyroid glands [11] and central nervous system. [12] GPR64 is mainly expressed in human and mouse epididymis as well as human prostate and parathyroid. [11] [13] GPR64, together with F-actin scaffold, locates at the nonciliated principal cells of the proximal male excurrent duct epithelia, where reabsorption of testicular fluid and concentration of sperm takes place. [14] [15]

Function

Targeting of Gpr64 in mice causes reduced fertility or infertility in males; but the reproductive capacity was unaffected in females. [16] Unchanged hormone expression in knockout males indicates that the receptor functions immediately in the male genital tract. Lack of Gpr64 expression causes sperm stasis and duct obstruction due to abnormal fluid reabsorption. In addition, expression of GPR64 has been found in fibroblast-like synovial cells obtained from osteoarthritis but not from rheumatoid arthritis. [17]

Clinical significance

GPR64 is significantly overexpressed in the Wnt signaling-dependent subgroup of medulloblastoma, [18] as well as in ewing sarcomas and carcinomas derived from prostate, kidney or lung. [19] Richter et al. demonstrated that GPR64 promotes tumor invasion and metastasis through placental growth factor and MMP1. [19] Upregulation and activation of GPR64 are associated with primary hyperparathyroidism and hypersecretion of parathyroid hormone. [11]

Related Research Articles

<span class="mw-page-title-main">EMR1</span> Protein-coding gene in the species Homo sapiens

EGF-like module-containing mucin-like hormone receptor-like 1 also known as F4/80 is a protein encoded by the ADGRE1 gene. EMR1 is a member of the adhesion GPCR family. Adhesion GPCRs are characterized by an extended extracellular region often possessing N-terminal protein modules that is linked to a TM7 region via a domain known as the GPCR-Autoproteolysis INducing (GAIN) domain.

<span class="mw-page-title-main">EMR2</span> Protein-coding gene in the species Homo sapiens

EGF-like module-containing mucin-like hormone receptor-like 2 also known as CD312 is a protein encoded by the ADGRE2 gene. EMR2 is a member of the adhesion GPCR family. Adhesion GPCRs are characterized by an extended extracellular region often possessing N-terminal protein modules that is linked to a TM7 region via a domain known as the GPCR-Autoproteolysis INducing (GAIN) domain.

<span class="mw-page-title-main">EMR3</span> Protein-coding gene in the species Homo sapiens

EGF-like module-containing mucin-like hormone receptor-like 3 is a protein encoded by the ADGRE3 gene. EMR3 is a member of the adhesion GPCR family. Adhesion GPCRs are characterized by an extended extracellular region often possessing N-terminal protein modules that is linked to a TM7 region via a domain known as the GPCR-Autoproteolysis INducing (GAIN) domain.

<span class="mw-page-title-main">Brain-specific angiogenesis inhibitor 3</span> Protein-coding gene in the species Homo sapiens

Brain-specific angiogenesis inhibitor 3 is a protein that in humans is encoded by the BAI3 gene.

<span class="mw-page-title-main">Latrophilin 1</span> Protein-coding gene in the species Homo sapiens

Latrophilin 1 is a protein that in humans is encoded by the ADGRL1 gene. It is a member of the adhesion-GPCR family of receptors. Family members are characterized by an extended extracellular region with a variable number of protein domains coupled to a TM7 domain via a domain known as the GPCR-Autoproteolysis INducing (GAIN) domain.

<span class="mw-page-title-main">GPR124</span> Protein-coding gene in the species Homo sapiens

Probable G-protein coupled receptor 124 is a protein that in humans is encoded by the GPR124 gene. It is a member of the adhesion-GPCR family of receptors. Family members are characterized by an extended extracellular region with a variable number of protein domains coupled to a TM7 domain via a domain known as the GPCR-Autoproteolysis INducing (GAIN) domain.

<span class="mw-page-title-main">GPR126</span> Protein-coding gene in the species Homo sapiens

G protein-coupled receptor 126 also known as VIGR and DREG is a protein encoded by the ADGRG6 gene. GPR126 is a member of the adhesion GPCR family. Adhesion GPCRs are characterized by an extended extracellular region often possessing N-terminal protein modules that is linked to a TM7 region via a domain known as the GPCR-Autoproteolysis INducing (GAIN) domain.

<span class="mw-page-title-main">GPR123</span> Protein-coding gene in the species Homo sapiens

Probable G-protein coupled receptor 123 is a protein that in humans is encoded by the GPR123 gene. It is a member of the adhesion-GPCR family of receptors. Family members are normally characterized by an extended extracellular region with a variable number of protein domains coupled to a TM7 domain via a domain known as the GPCR-Autoproteolysis INducing (GAIN) domain.

<span class="mw-page-title-main">GPR128</span> Protein-coding gene in the species Homo sapiens

G protein-coupled receptor 128 is a protein encoded by the ADGRG7 gene. GPR128 is a member of the adhesion GPCR family. Adhesion GPCRs are characterized by an extended extracellular region often possessing N-terminal protein modules that is linked to a TM7 region via a domain known as the GPCR-Autoproteolysis INducing (GAIN) domain.

<span class="mw-page-title-main">GPR112</span> Protein-coding gene in humans

G protein-coupled receptor 112 is a protein encoded by the ADGRG4 gene. GPR112 is a member of the adhesion GPCR family. Adhesion GPCRs are characterized by an extended extracellular region often possessing N-terminal protein modules that is linked to a TM7 region via a domain known as the GPCR-Autoproteolysis INducing (GAIN) domain.

<span class="mw-page-title-main">GPR114</span> Protein-coding gene in the species Homo sapiens

G protein-coupled receptor 114 is a protein encoded by the ADGRG5 gene. GPR114 is a member of the adhesion GPCR family. Adhesion GPCRs are characterized by an extended extracellular region often possessing N-terminal protein modules that is linked to a TM7 region via a domain known as the GPCR-Autoproteolysis INducing (GAIN) domain.

<span class="mw-page-title-main">GPR116</span> Protein-coding gene in the species Homo sapiens

Probable G-protein coupled receptor 116 is a protein that in humans is encoded by the GPR116 gene. GPR116 has now been shown to play an essential role in the regulation of lung surfactant homeostasis.

<span class="mw-page-title-main">GPR97</span> Protein-coding gene in the species Homo sapiens

G-protein coupled receptor 97 also known as adhesion G protein-coupled receptor G3 (ADGRG3) is a protein that in humans is encoded by the ADGRG3 gene. GPR97 is a member of the adhesion GPCR family. Adhesion GPCRs are characterized by an extended extracellular region often possessing N-terminal protein modules that is linked to a TM7 region via a domain known as the GPCR-Autoproteolysis INducing (GAIN) domain.

<span class="mw-page-title-main">GPR110</span> Protein-coding gene in the species Homo sapiens

Probable G-protein coupled receptor 110 is a protein that in humans is encoded by the GPR110 gene. This gene encodes a member of the adhesion-GPCR receptor family. Family members are characterized by an extended extracellular region with a variable number of N-terminal protein modules coupled to a TM7 region via a domain known as the GPCR-Autoproteolysis INducing (GAIN) domain.

<span class="mw-page-title-main">GPR133</span> Protein-coding gene in the species Homo sapiens

Probable G-protein coupled receptor 133 is a protein that in humans is encoded by the GPR133 gene.

<span class="mw-page-title-main">GPR144</span> Protein-coding gene in the species Homo sapiens

Probable G-protein coupled receptor 144 is a protein that in humans is encoded by the GPR144 gene. This gene encodes a member of the adhesion-GPCR family of receptors. Family members are characterised by an extended extracellular region with a variable number of protein domains coupled to a TM7 domain via a domain known as the GPCR-Autoproteolysis INducing (GAIN) domain.

<span class="mw-page-title-main">GPR56</span> Protein-coding gene in the species Homo sapiens

G protein-coupled receptor 56 also known as TM7XN1 is a protein encoded by the ADGRG1 gene. GPR56 is a member of the adhesion GPCR family. Adhesion GPCRs are characterized by an extended extracellular region often possessing N-terminal protein modules that is linked to a TM7 region via a domain known as the GPCR-Autoproteolysis INducing (GAIN) domain.

Secretin receptor family consists of secretin receptors regulated by peptide hormones from the glucagon hormone family. The family is different from adhesion G protein-coupled receptors.

<span class="mw-page-title-main">Latrophilin 2</span> Protein-coding gene in the species Homo sapiens

Latrophilin 2 is a protein that in humans is encoded by the ADGRL2 gene.

<span class="mw-page-title-main">Adhesion G protein-coupled receptor</span> Class of 33 human protein receptors

Adhesion G protein-coupled receptors are a class of 33 human protein receptors with a broad distribution in embryonic and larval cells, cells of the reproductive tract, neurons, leukocytes, and a variety of tumours. Adhesion GPCRs are found throughout metazoans and are also found in single-celled colony forming choanoflagellates such as Monosiga brevicollis and unicellular organisms such as Filasterea. The defining feature of adhesion GPCRs that distinguishes them from other GPCRs is their hybrid molecular structure. The extracellular region of adhesion GPCRs can be exceptionally long and contain a variety of structural domains that are known for the ability to facilitate cell and matrix interactions. Their extracellular region contains the membrane proximal GAIN domain. Crystallographic and experimental data has shown this structurally conserved domain to mediate autocatalytic processing at a GPCR-proteolytic site (GPS) proximal to the first transmembrane helix. Autocatalytic processing gives rise to an extracellular (α) and a membrane-spanning (β) subunit, which are associated non-covalently, resulting in expression of a heterodimeric receptor at the cell surface. Ligand profiles and in vitro studies have indicated a role for adhesion GPCRs in cell adhesion and migration. Work utilizing genetic models confined this concept by demonstrating that the primary function of adhesion GPCRs may relate to the proper positioning of cells in a variety of organ systems. Moreover, growing evidence implies a role of adhesion GPCRs in tumour cell metastasis. Formal G protein-coupled signalling has been demonstrated for a number for adhesion GPCRs, however, the orphan receptor status of many of the receptors still hampers full characterisation of potential signal transduction pathways. In 2011, the adhesion GPCR consortium was established to facilitate research of the physiological and pathological functions of adhesion GPCRs.

References

  1. 1 2 3 GRCh38: Ensembl release 89: ENSG00000173698 - Ensembl, May 2017
  2. 1 2 3 GRCm38: Ensembl release 89: ENSMUSG00000031298 - Ensembl, May 2017
  3. ↑ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  4. ↑ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  5. ↑ Hamann, J; Aust, G; Araç, D; Engel, FB; Formstone, C; Fredriksson, R; Hall, RA; Harty, BL; Kirchhoff, C; Knapp, B; Krishnan, A; Liebscher, I; Lin, HH; Martinelli, DC; Monk, KR; Peeters, MC; Piao, X; Prömel, S; Schöneberg, T; Schwartz, TW; Singer, K; Stacey, M; Ushkaryov, YA; Vallon, M; Wolfrum, U; Wright, MW; Xu, L; Langenhan, T; Schiöth, HB (April 2015). "International Union of Basic and Clinical Pharmacology. XCIV. Adhesion G protein-coupled receptors". Pharmacological Reviews. 67 (2): 338–67. doi:10.1124/pr.114.009647. PMC   4394687 . PMID   25713288.
  6. ↑ Stacey M, Yona S (2011). Adhesion-GPCRs: Structure to Function (Advances in Experimental Medicine and Biology). Berlin: Springer. ISBN   978-1-4419-7912-4.
  7. ↑ Langenhan, T; Aust, G; Hamann, J (21 May 2013). "Sticky signaling--adhesion class G protein-coupled receptors take the stage". Science Signaling. 6 (276): re3. doi:10.1126/scisignal.2003825. PMID   23695165. S2CID   6958640.
  8. ↑ Araç D, Boucard AA, Bolliger MF, Nguyen J, Soltis SM, Südhof TC, Brunger AT (March 2012). "A novel evolutionarily conserved domain of cell-adhesion GPCRs mediates autoproteolysis". The EMBO Journal. 31 (6): 1364–78. doi:10.1038/emboj.2012.26. PMC   3321182 . PMID   22333914.
  9. ↑ Azimzadeh, Pedram; Talamantez-Lyburn, Sarah C.; Chang, Katarina T.; Inoue, Asuka; Balenga, Nariman (November 2019). "Spatial regulation of GPR64/ADGRG2 signaling by β-arrestins and GPCR kinases". Annals of the New York Academy of Sciences. 1456 (1): 26–43. Bibcode:2019NYASA1456...26A. doi:10.1111/nyas.14227. ISSN   1749-6632. PMC   7236788 . PMID   31502283.
  10. ↑ Davies B, Baumann C, Kirchhoff C, Ivell R, Nubbemeyer R, Habenicht UF, Theuring F, Gottwald U (2004). "Targeted deletion of the epididymal receptor HE6 results in fluid dysregulation and male infertility". Mol Cell Biol. 24 (19): 8642–8648. doi:10.1128/mcb.24.19.8642-8648.2004. PMC   516748 . PMID   15367682.
  11. 1 2 3 Balenga, Nariman; Azimzadeh, Pedram; Hogue, Joyce A.; Staats, Paul N.; Shi, Yuhong; Koh, James; Dressman, Holly; Olson, John A. (March 2017). "Orphan Adhesion GPCR GPR64/ADGRG2 Is Overexpressed in Parathyroid Tumors and Attenuates Calcium-Sensing Receptor-Mediated Signaling". Journal of Bone and Mineral Research. 32 (3): 654–666. doi:10.1002/jbmr.3023. ISSN   1523-4681. PMC   7211037 . PMID   27760455.
  12. ↑ Haitina T, Olsson F, Stephansson O, Alsiö J, Roman E, Ebendal T, Schiöth HB, Fredriksson R (2008). "Expression profile of the entire family of Adhesion G protein-coupled receptors in mouse and rat". BMC Neurosci. 9 (1): 43. doi:10.1186/1471-2202-9-43. PMC   2386866 . PMID   18445277.
  13. ↑ Hamann J, Aust G, Araç D, Engel FB, Formstone C, Fredriksson R, Hall RA, Harty BL, Kirchhoff C, Knapp B, Krishnan A, Liebscher I, Lin HH, Martinelli DC, Monk KR, Peeters MC, Piao X, Prömel S, Schöneberg T, Schwartz TW, Singer K, Stacey M, Ushkaryov YA, Vallon M, Wolfrum U, Wright MW, Xu L, Langenhan T, Schiöth HB (April 2015). "International Union of Basic and Clinical Pharmacology. XCIV. Adhesion G protein-coupled receptors". Pharmacological Reviews. 67 (2): 338–67. doi:10.1124/pr.114.009647. PMC   4394687 . PMID   25713288.
  14. ↑ Obermann H, Samalecos A, Osterhoff C, Schröder B, Heller R, Kirchhoff C (January 2003). "HE6, a two-subunit heptahelical receptor associated with apical membranes of efferent and epididymal duct epithelia". Molecular Reproduction and Development. 64 (1): 13–26. doi: 10.1002/mrd.10220 . PMID   12420295. S2CID   29953802.
  15. ↑ Kirchhoff C, Osterhoff C, Samalecos A (August 2008). "HE6/GPR64 adhesion receptor co-localizes with apical and subapical F-actin scaffold in male excurrent duct epithelia". Reproduction. 136 (2): 235–45. doi: 10.1530/REP-08-0078 . PMID   18469038.
  16. ↑ Davies B, Baumann C, Kirchhoff C, Ivell R, Nubbemeyer R, Habenicht UF, Theuring F, Gottwald U (October 2004). "Targeted deletion of the epididymal receptor HE6 results in fluid dysregulation and male infertility". Molecular and Cellular Biology. 24 (19): 8642–8. doi:10.1128/MCB.24.19.8642-8648.2004. PMC   516748 . PMID   15367682.
  17. ↑ Galligan CL, Baig E, Bykerk V, Keystone EC, Fish EN (September 2007). "Distinctive gene expression signatures in rheumatoid arthritis synovial tissue fibroblast cells: correlates with disease activity". Genes and Immunity. 8 (6): 480–91. doi:10.1038/sj.gene.6364400. PMID   17568789. S2CID   22240185.
  18. ↑ Whittier KL, Boese EA, Gibson-Corley KN, Kirby PA, Darbro BW, Qian Q, Ingram WJ, Robertson T, Remke M, Taylor MD, O'Dorisio MS (10 October 2013). "G-protein coupled receptor expression patterns delineate medulloblastoma subgroups". Acta Neuropathologica Communications. 1 (1): 66. doi:10.1186/2051-5960-1-66. PMC   3893540 . PMID   24252460.
  19. 1 2 Richter GH, Fasan A, Hauer K, Grunewald TG, Berns C, Rössler S, Naumann I, Staege MS, Fulda S, Esposito I, Burdach S (May 2013). "G-Protein coupled receptor 64 promotes invasiveness and metastasis in Ewing sarcomas through PGF and MMP1". The Journal of Pathology. 230 (1): 70–81. doi:10.1002/path.4170. PMID   23338946. S2CID   11129426.

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