Jump to content

TAS2R14

From Wikipedia, the free encyclopedia

This is an old revision of this page, as edited by Boghog (talk | contribs) at 01:38, 7 September 2023 (restored proper lead setence). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

TAS2R14
Identifiers
AliasesTAS2R14, T2R14, TRB1, taste 2 receptor member 14
External IDsOMIM: 604790; MGI: 2681298; HomoloGene: 87013; GeneCards: TAS2R14; OMA:TAS2R14 - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_023922

NM_021562

RefSeq (protein)

NP_076411

NP_067537

Location (UCSC)Chr 12: 10.94 – 11.17 MbChr 6: 133.03 – 133.03 Mb
PubMed search[3][4]
Wikidata
View/Edit HumanView/Edit Mouse
TAS2R14
Identifiers
AliasesTAS2R14, T2R14, TRB1, taste 2 receptor member 14
External IDsOMIM: 604790; MGI: 2681298; HomoloGene: 87013; GeneCards: TAS2R14; OMA:TAS2R14 - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

NM_023922

NM_021562

RefSeq (protein)

NP_076411

NP_067537

Location (UCSC)Chr 12: 10.94 – 11.17 MbChr 6: 133.03 – 133.03 Mb
PubMed search[5][6]
Wikidata
View/Edit HumanView/Edit Mouse

Taste receptor type 2 member 14 is a protein that in humans is encoded by the TAS2R14 gene.[7][8][9]

Taste receptors for bitter substances (T2Rs/TAS2Rs) belong to the family of G-protein coupled receptors and are related to class A-like GPCRs. There are 25 known T2Rs in humans responsible for bitter taste perception.[10]

Bitter taste receptor hTAS2R14 is one of the human bitter taste receptors, recognizing an enormous variety of structurally different molecules, including natural and synthetic bitter compounds.[11]

Gene

TAS2R14 gene[7][8][9] (Taste receptor type 2 member 14) is a Protein Coding gene. This gene maps to the taste receptor gene cluster on chromosome 12p13.[12]

An important paralog of this gene is TAS2R13.

SNPs

Taste receptors harbor many polymorphisms, and several SNPs have a profound impact on the gene function and expression.

Common TAS2R14 SNPs location
Mutation dbSNP
I5M rs79297986
F63L rs142263768
C67S rs140545738
T86A rs16925868
N87Y rs146833217
I118V rs4140968
F198L rs202123922
L201F rs35804287
K211R rs111614880

Data obtained from 1000 genomes project.

Mutagenesis data (obtained from BitterDB[13][14])

Location BW number[15] Residue References
TM2 2.61 W66 doi: 10.1016/j.bbagen.2018.07.009
ECL1 3.28 L85 doi: 10.1016/j.bbagen.2018.07.009
ECL1 3.29 T86 doi: 10.1016/j.bbagen.2018.07.009
ECL1 3.3 N87 doi: 10.1016/j.bbagen.2018.07.009
TM3 3.32 W89 doi: 10.1016/j.bbagen.2018.07.009
TM3 3.33 T90 doi: 10.1016/j.bbagen.2018.07.009
TM3 3.36 N93 doi: 10.1016/j.bbagen.2018.07.009
TM3 3.37 H94 doi: 10.1016/j.bbagen.2018.07.009
ECL2 5.42 T182 doi: 10.1016/j.bbagen.2018.07.009
ECL2 5.43 S183 doi: 10.1016/j.bbagen.2018.07.009
TM5 5.46 F186 doi: 10.1016/j.bbagen.2018.07.009
TM5 5.47 I187 doi: 10.1016/j.bbagen.2018.07.009
TM6 6.48 Y240 doi: 10.1016/j.bbagen.2018.07.009
TM6 6.49 A241 doi: 10.1016/j.bbagen.2018.07.009
TM6 6.51 F243 doi: 10.1016/j.bbagen.2018.07.009
TM6 6.55 F247 doi: 10.1016/j.bbagen.2018.07.009
TM7 7.36 I263 doi: 10.1016/j.bbagen.2018.07.009
TM7 7.39 Q266 doi: 10.1016/j.bbagen.2018.07.009
TM7 7.42 G269 doi: 10.1016/j.bbagen.2018.07.009

Signal transduction pathways and cell-based functional assays for T2Rs

TAS2Rs activation produces modulation of a broad range of signal transduction pathways. The Gαgusducin (Gαgus), which belongs to the Gαi subfamily, was first identified and cloned in 1992 in taste tissue, and has high similarity to the Gα-transducin (Gαtrans) in the retina. Gα16gus44, a chimeric Gα16 (type of Gαq), harboring 44 gustducin specific sequence at its C terminus, or Gαqi5, a Gαq protein containing the five carboxyl-terminal amino acids from Gαi, are often used in order to couple the taste receptor to Gαq pathway and measure calcium or IP3 release. Specifically, stimulation of a GPCR receptor, coupled to Gαq, results in the activation of phospholipase C β2 (PLC), which then stimulates the second messengers 1,4,5-inositol trisphosphate (IP3) and diacylglycerol (DAG). IP3 causes the release of Ca+2 from intracellular stores. Calcium opens Ca-activated TRP ion channels and leads to depolarization of the cell as well as to release of neurotransmitters.[16]

Ligands

Up to now, 151 ligands were identified for T2R14,[13][14] in addition to 12 synthetic flufenamic acid derivatives.[17]  

Function

This gene product belongs to the family of candidate taste receptors that are members of the G-protein-coupled receptor superfamily. These proteins are specifically expressed in the taste receptor cells of the tongue and palate epithelia. They are organized in the genome in clusters and are genetically linked to loci that influence bitter perception in mice and humans. In functional expression studies, TAS2R14 responds to (−)-α-thujone, the primary neurotoxic agent in absinthe, and picrotoxin, a poison found in fishberries.[18] This gene maps to the taste receptor gene cluster on chromosome 12p13.[9]

TAS2R14 is also expressed in the smooth muscle of human airways, along with several other bitter taste receptors. Their activation in these cells causes an increase in intracellular calcium ion, which in turn triggers the opening of potassium channels which hyperpolarize the membrane and cause the smooth muscle to relax. Hence, activation of these receptors leads to bronchodilation.[19]

Extra-oral roles of TAS2R14

TAS2R14 was shown to be expressed in many tissues in the human body including the heart,[20] thyroid,[21] stomach,[22] skin,[23] urogenital,[24][25][26][27] immune system,[28] and more.

TAS2R14 extra-oral function

  • In the respiratory system, several TAS2R subtypes: TAS2R4, TAS2R16, TAS2R14 and TAS2R38, were found to play important roles in innate immune nitric oxide production (NO).[29]
  • T2R14 causes inhibition of IgE-dependent mast cells.[30]
  • Associations between single nucleotide polymorphisms in TAS214 gene and male infertility were observed.[26]

See also

References

  1. ^ a b c d e f ENSG00000261984, ENSG00000276541 GRCh38: Ensembl release 89: ENSG00000212127, ENSG00000261984, ENSG00000276541Ensembl, May 2017
  2. ^ a b c d e f GRCm38: Ensembl release 89: ENSMUSG00000071147Ensembl, 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. ^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  6. ^ "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  7. ^ a b Adler E, Hoon MA, Mueller KL, Chandrashekar J, Ryba NJ, Zuker CS (Apr 2000). "A novel family of mammalian taste receptors". Cell. 100 (6): 693–702. doi:10.1016/S0092-8674(00)80705-9. PMID 10761934. S2CID 14604586. Cite error: The named reference "pmid10761934" was defined multiple times with different content (see the help page).
  8. ^ a b Matsunami H, Montmayeur JP, Buck LB (Apr 2000). "A family of candidate taste receptors in human and mouse". Nature. 404 (6778): 601–4. doi:10.1038/35007072. PMID 10766242. S2CID 4336913. Cite error: The named reference "pmid10766242" was defined multiple times with different content (see the help page).
  9. ^ a b c "Entrez Gene: TAS2R14 taste receptor, type 2, member 14". Cite error: The named reference "entrez" was defined multiple times with different content (see the help page).
  10. ^ Meyerhof W, Batram C, Kuhn C, Brockhoff A, Chudoba E, Bufe B, et al. (February 2010). "The molecular receptive ranges of human TAS2R bitter taste receptors". Chemical Senses. 35 (2): 157–70. doi:10.1093/chemse/bjp092. PMID 20022913.
  11. ^ Di Pizio A, Niv MY (July 2015). "Promiscuity and selectivity of bitter molecules and their receptors". Bioorganic & Medicinal Chemistry. 23 (14): 4082–91. doi:10.1016/j.bmc.2015.04.025. PMID 25934224.
  12. ^ "TAS2R14 Gene - GeneCards | T2R14 Protein | T2R14 Antibody". www.genecards.org. Retrieved 2021-08-03.
  13. ^ a b Wiener A, Shudler M, Levit A, Niv MY (January 2012). "BitterDB: a database of bitter compounds". Nucleic Acids Research. 40 (Database issue): D413-9. doi:10.1093/nar/gkr755. PMC 3245057. PMID 21940398.
  14. ^ a b Dagan-Wiener A, Di Pizio A, Nissim I, Bahia MS, Dubovski N, Margulis E, Niv MY (January 2019). "BitterDB: taste ligands and receptors database in 2019". Nucleic Acids Research. 47 (D1): D1179–D1185. doi:10.1093/nar/gky974. PMC 6323989. PMID 30357384.
  15. ^ Ballesteros, Juan A.; Weinstein, Harel (1995-01-01). "[19] Integrated methods for the construction of three-dimensional models and computational probing of structure-function relations in G protein-coupled receptors". Methods in Neurosciences. 25: 366–428. doi:10.1016/S1043-9471(05)80049-7. ISBN 9780121852955. ISSN 1043-9471.
  16. ^ Breer H, Boekhoff I, Tareilus E (May 1990). "Rapid kinetics of second messenger formation in olfactory transduction". Nature. 345 (6270): 65–8. Bibcode:1990Natur.345...65B. doi:10.1038/345065a0. PMID 2158631. S2CID 511452.
  17. ^ Di Pizio A, Waterloo LA, Brox R, Löber S, Weikert D, Behrens M, et al. (February 2020). "Rational design of agonists for bitter taste receptor TAS2R14: from modeling to bench and back". Cellular and Molecular Life Sciences. 77 (3): 531–542. doi:10.1007/s00018-019-03194-2. PMID 31236627. S2CID 195329795.
  18. ^ Behrens M, Brockhoff A, Kuhn C, Bufe B, Winnig M, Meyerhof W (June 2004). "The human taste receptor hTAS2R14 responds to a variety of different bitter compounds". Biochemical and Biophysical Research Communications. 319 (2): 479–85. doi:10.1016/j.bbrc.2004.05.019. PMID 15178431.
  19. ^ Deshpande DA, Wang WC, McIlmoyle EL, Robinett KS, Schillinger RM, An SS, et al. (November 2010). "Bitter taste receptors on airway smooth muscle bronchodilate by localized calcium signaling and reverse obstruction". Nature Medicine. 16 (11): 1299–304. doi:10.1038/nm.2237. PMC 3066567. PMID 20972434.
  20. ^ Foster SR, Porrello ER, Purdue B, Chan HW, Voigt A, Frenzel S, et al. (2013). "Expression, regulation and putative nutrient-sensing function of taste GPCRs in the heart". PLOS ONE. 8 (5): e64579. Bibcode:2013PLoSO...864579F. doi:10.1371/journal.pone.0064579. PMC 3655793. PMID 23696900.
  21. ^ Clark AA, Dotson CD, Elson AE, Voigt A, Boehm U, Meyerhof W, et al. (January 2015). "TAS2R bitter taste receptors regulate thyroid function". FASEB Journal. 29 (1): 164–72. doi:10.1096/fj.14-262246. PMC 4285546. PMID 25342133.{{cite journal}}: CS1 maint: unflagged free DOI (link)
  22. ^ Liszt, Kathrin Ingrid; Ley, Jakob Peter; Lieder, Barbara; Behrens, Maik; Stöger, Verena; Reiner, Angelika; Hochkogler, Christina Maria; Köck, Elke; Marchiori, Alessandro; Hans, Joachim; Widder, Sabine (2017-07-25). "Caffeine induces gastric acid secretion via bitter taste signaling in gastric parietal cells". Proceedings of the National Academy of Sciences. 114 (30): E6260–E6269. Bibcode:2017PNAS..114E6260L. doi:10.1073/pnas.1703728114. PMC 5544304. PMID 28696284.
  23. ^ Shaw L, Mansfield C, Colquitt L, Lin C, Ferreira J, Emmetsberger J, Reed DR (2018). "Personalized expression of bitter 'taste' receptors in human skin". PLOS ONE. 13 (10): e0205322. Bibcode:2018PLoSO..1305322S. doi:10.1371/journal.pone.0205322. PMC 6192714. PMID 30332676.
  24. ^ Behrens M, Bartelt J, Reichling C, Winnig M, Kuhn C, Meyerhof W (July 2006). "Members of RTP and REEP gene families influence functional bitter taste receptor expression". The Journal of Biological Chemistry. 281 (29): 20650–9. doi:10.1074/jbc.M513637200. PMID 16720576.
  25. ^ Zheng K, Lu P, Delpapa E, Bellve K, Deng R, Condon JC, et al. (September 2017). "Bitter taste receptors as targets for tocolytics in preterm labor therapy". FASEB Journal. 31 (9): 4037–4052. doi:10.1096/fj.201601323RR. PMC 5572693. PMID 28559440.{{cite journal}}: CS1 maint: unflagged free DOI (link)
  26. ^ a b Gentiluomo M, Crifasi L, Luddi A, Locci D, Barale R, Piomboni P, Campa D (November 2017). "Taste receptor polymorphisms and male infertility". Human Reproduction. 32 (11): 2324–2331. doi:10.1093/humrep/dex305. PMID 29040583.
  27. ^ Martin LT, Nachtigal MW, Selman T, Nguyen E, Salsman J, Dellaire G, Dupré DJ (April 2019). "Bitter taste receptors are expressed in human epithelial ovarian and prostate cancers cells and noscapine stimulation impacts cell survival". Molecular and Cellular Biochemistry. 454 (1–2): 203–214. doi:10.1007/s11010-018-3464-z. PMID 30350307. S2CID 53035462.
  28. ^ Orsmark-Pietras C, James A, Konradsen JR, Nordlund B, Söderhäll C, Pulkkinen V, et al. (July 2013). "Transcriptome analysis reveals upregulation of bitter taste receptors in severe asthmatics". The European Respiratory Journal. 42 (1): 65–78. doi:10.1183/09031936.00077712. PMID 23222870.
  29. ^ Yan CH, Hahn S, McMahon D, Bonislawski D, Kennedy DW, Adappa ND, et al. (March 2017). "Nitric oxide production is stimulated by bitter taste receptors ubiquitously expressed in the sinonasal cavity". American Journal of Rhinology & Allergy. 31 (2): 85–92. doi:10.2500/ajra.2017.31.4424. PMC 5356199. PMID 28452704.
  30. ^ Ekoff M, Choi JH, James A, Dahlén B, Nilsson G, Dahlén SE (August 2014). "Bitter taste receptor (TAS2R) agonists inhibit IgE-dependent mast cell activation". The Journal of Allergy and Clinical Immunology. 134 (2): 475–8. doi:10.1016/j.jaci.2014.02.029. PMID 24755408.

Further reading

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