Q9JJH7 (TRPM5_MOUSE) Reviewed, UniProtKB/Swiss-Prot
Last modified
May 1, 2013.
Version 78.
History...
Names·Attributes·General annotation·Ontologies·Alt products·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order
Names·Attributes·General annotation·Ontologies·Alt products·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize orderNames and origin
| Protein names | Recommended name: Transient receptor potential cation channel subfamily M member 5 Alternative name(s): Long transient receptor potential channel 5 Short name=LTrpC-5 Short name=LTrpC5 MLSN1- and TRP-related gene 1 protein | ||||
| Gene names |
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| Organism | Mus musculus (Mouse) [Reference proteome] | ||||
| Taxonomic identifier | 10090 [NCBI] | ||||
| Taxonomic lineage | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Glires › Rodentia › Sciurognathi › Muroidea › Muridae › Murinae › Mus › Mus![]() |
Protein attributes
| Sequence length | 1158 AA. |
| Sequence status | Complete. |
| Protein existence | Evidence at protein level |
General annotation (Comments)
| Function | Voltage-modulated Ca2+-activated, monovalent cation channel (VCAM) that mediates a transient membrane depolarization and plays a central role in taste transduction. Monovalent-specific, non-selective cation channel that mediates the transport of Na+, K+ and Cs+ ions equally well. Activated directly by increases in intracellular Ca2+, but is impermeable to it. Gating is voltage-dependent and displays rapid activation and deactivation kinetics upon channel stimulation even during sustained elevations in Ca2+. Also activated by a fast intracellular Ca2+ increase in response to inositol 1,4,5-triphosphate-producing receptor agonists. The channel is blocked by extracellular acidification. External acidification has 2 effects, a fast reversible block of the current and a slower irreversible enhancement of current inactivation. Is a highly temperature-sensitive, heat activated channel showing a steep increase of inward currents at temperatures between 15 and 35 degrees Celsius. Heat activation is due to a shift of the voltage-dependent activation curve to negative potentials. Activated by arachidonic acid in vitro. May be involved in perception of bitter, sweet and umami tastes. May also be involved in sensing semiochemicals. Ref.4 Ref.8 Ref.10 Ref.11 Ref.12 Ref.13 Ref.15 Ref.16 |
| Enzyme regulation | Phosphatidylinositol 4,5-bisphosphate (PIP2) is able to partially restore sensitivity to Ca2+ after desensitization. Inhibited by flufenamic acid with an IC50 of 24.5 µM and spermine with an IC50 of 37 µM. Ref.8 Ref.9 |
| Subcellular location | Cell membrane; Multi-pass membrane protein Potential. |
| Tissue specificity | Strongly expressed in liver, heart, testis, brain and kidney. Detected in fetal liver, kidney, spleen, brain, heart and lung, and in adult skin, eyes, spleen, stomach, small intestine, colon, lung, bladder, pancreas and thymus. Biallelically expressed at all stages and tissues examined. Also expressed in subsets of taste receptor cells of the tongue, in olfactory sensory neurons of the main olfactory epithelium and in the vomeronasal organ. Ref.2 Ref.7 Ref.14 Ref.16 |
| Disruption phenotype | Mice show diminished behavioral and nerve responses to bitter, sweet and umami tastes. Ref.13 |
| Sequence similarities | Belongs to the transient receptor (TC 1.A.4) family. LTrpC subfamily. TRPM5 sub-subfamily. [View classification] |
| Sequence caution | The sequence CAB94717.2 differs from that shown. Reason: Frameshift at position 1130. The sequence CAC19456.1 differs from that shown. Reason: Frameshift at position 1130. |
Ontologies
| Keywords | |
|---|---|
| Biological process | Ion transport Transport |
| Cellular component | Cell membrane Membrane |
| Coding sequence diversity | Alternative splicing |
| Domain | Coiled coil Transmembrane Transmembrane helix |
| Ligand | Calcium |
| Molecular function | Ion channel Ligand-gated ion channel Receptor Voltage-gated channel |
| Technical term | Complete proteome Reference proteome |
| Gene Ontology (GO) | |
| Cellular_component | integral to membrane Inferred from electronic annotation. Source: UniProtKB-KW plasma membraneInferred from electronic annotation. Source: UniProtKB-SubCell |
| Molecular_function | calcium activated cation channel activity Inferred from direct assay Ref.8. Source: MGI potassium channel activityInferred from direct assay Ref.8. Source: MGI sodium channel activityInferred from direct assay Ref.8. Source: MGI voltage-gated ion channel activityInferred from electronic annotation. Source: UniProtKB-KW |
| Complete GO annotation... | |
Alternative products
| This entry describes 3 isoforms produced by alternative splicing. [Align] [Select] | ||||||
| Isoform 1 Ref.1 Ref.2 Ref.3 Ref.4 Ref.5 Ref.6 (identifier: Q9JJH7-1) This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry. | ||||||
| Isoform 2 Ref.3 (identifier: Q9JJH7-2) The sequence of this isoform differs from the canonical sequence as follows: 1108-1116: ANYCMLLLS → SKYGFRPWE 1117-1158: Missing. | ||||||
| Isoform 3 Ref.4 (identifier: Q9JJH7-3) The sequence of this isoform differs from the canonical sequence as follows: 978-1000: SYTFQVVQGNADMFWKFQRYHLI → RVLTETGPMSWYFAAVSSGLDLQ 1001-1158: Missing. |
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||
Molecule processing | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Chain | 1 – 1158 | 1158 | Transient receptor potential cation channel subfamily M member 5 | PRO_0000328934 | |||||
Regions | |||||||||
| Topological domain | 1 – 645 | 645 | Cytoplasmic Potential | ||||||
| Transmembrane | 646 – 666 | 21 | Helical; Potential | ||||||
| Topological domain | 667 – 732 | 66 | Extracellular Potential | ||||||
| Transmembrane | 733 – 753 | 21 | Helical; Potential | ||||||
| Topological domain | 754 – 810 | 57 | Cytoplasmic Potential | ||||||
| Transmembrane | 811 – 831 | 21 | Helical; Potential | ||||||
| Topological domain | 832 – 834 | 3 | Extracellular Potential | ||||||
| Transmembrane | 835 – 855 | 21 | Helical; Potential | ||||||
| Topological domain | 856 – 871 | 16 | Cytoplasmic Potential | ||||||
| Transmembrane | 872 – 892 | 21 | Helical; Potential | ||||||
| Topological domain | 893 – 953 | 61 | Extracellular Potential | ||||||
| Transmembrane | 954 – 974 | 21 | Helical; Potential | ||||||
| Topological domain | 975 – 1158 | 184 | Cytoplasmic Potential | ||||||
| Coiled coil | 552 – 572 | 21 | Potential | ||||||
Natural variations | |||||||||
| Alternative sequence | 978 – 1000 | 23 | SYTFQ…RYHLI → RVLTETGPMSWYFAAVSSGL DLQ in isoform 3. Ref.4 | VSP_052744 | |||||
| Alternative sequence | 1001 – 1158 | 158 | Missing in isoform 3. Ref.4 | VSP_052745 | |||||
| Alternative sequence | 1108 – 1116 | 9 | ANYCMLLLS → SKYGFRPWE in isoform 2. Ref.3 | VSP_052746 | |||||
| Alternative sequence | 1117 – 1158 | 42 | Missing in isoform 2. Ref.3 | VSP_052747 | |||||
Experimental info | |||||||||
| Mutagenesis | 831 | 1 | E → Q: Reduces sensitivity to block by extracellular acidification. Sensitivity to block by low extracellular pH is nearly abolished; when associated with N-935. Ref.10 | ||||||
| Mutagenesis | 897 | 1 | H → N: Shows normal sensitivity to acid block and significant recovery from acid-enhanced inactivation. Ref.10 | ||||||
| Mutagenesis | 935 | 1 | H → N: Reduces sensitivity to block by extracellular acidification. Sensitivity to block by low extracellular pH is nearly abolished; when associated with Q-831. Ref.10 | ||||||
| Sequence conflict | 24 | 1 | C → S in AAI33713. Ref.5 | ||||||
| Sequence conflict | 612 | 1 | H → P in CAB94717. Ref.3 | ||||||
| Sequence conflict | 871 | 1 | D → E in BAE36157. Ref.6 | ||||||
| Sequence conflict | 897 | 1 | H → N in AAI33713. Ref.5 | ||||||
Sequences
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References
| « Hide 'large scale' references | |
| [1] | "Sequence-based structural features between Kvlqt1 and Tapa1 on mouse chromosome 7F4/F5 corresponding to the Beckwith-Wiedemann syndrome region on human 11p15.5: long-stretches of unusually well conserved intronic sequences of kvlqt1 between mouse and human." Yatsuki H., Watanabe H., Hattori M., Joh K., Soejima H., Komoda H., Xin Z., Zhu X., Higashimoto K., Nishimura M., Kuratomi S., Sasaki H., Sakaki Y., Mukai T. DNA Res. 7:195-206(2000) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1). |
| [2] | "Mtr1, a novel biallelically expressed gene in the center of the mouse distal chromosome 7 imprinting cluster, is a member of the Trp gene family." Enklaar T., Esswein M., Oswald M., Hilbert K., Winterpacht A., Higgins M., Zabel B., Prawitt D. Genomics 67:179-187(2000) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1), TISSUE SPECIFICITY. |
| [3] | "Sequence conservation and variability of imprinting in the Beckwith-Wiedemann syndrome gene cluster in human and mouse." Paulsen M., El-Maarri O., Engemann S., Stroedicke M., Franck O., Davies K., Reinhardt R., Reik W., Walter J. Hum. Mol. Genet. 9:1829-1841(2000) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA / MRNA] (ISOFORM 1), NUCLEOTIDE SEQUENCE [GENOMIC DNA] (ISOFORM 2). Strain: 129/Sv. |
| [4] | "TRPM5 is a voltage-modulated and Ca(2+)-activated monovalent selective cation channel." Hofmann T., Chubanov V., Gudermann T., Montell C. Curr. Biol. 13:1153-1158(2003) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORMS 1 AND 3), FUNCTION. Tissue: Testis. |
| [5] | "The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)." The MGC Project Team Genome Res. 14:2121-2127(2004) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 1). |
| [6] | "The transcriptional landscape of the mammalian genome." Carninci P., Kasukawa T., Katayama S., Gough J., Frith M.C., Maeda N., Oyama R., Ravasi T., Lenhard B., Wells C., Kodzius R., Shimokawa K., Bajic V.B., Brenner S.E., Batalov S., Forrest A.R., Zavolan M., Davis M.J. Hayashizaki Y.Science 309:1559-1563(2005) [PubMed] [Europe PMC] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] OF 441-1158 (ISOFORM 1). Strain: C57BL/6J. Tissue: Embryonic liver. |
| [7] | "A transient receptor potential channel expressed in taste receptor cells." Perez C.A., Huang L., Rong M., Kozak J.A., Preuss A.K., Zhang H., Max M., Margolskee R.F. Nat. Neurosci. 5:1169-1176(2002) [PubMed] [Europe PMC] [Abstract] Cited for: TISSUE SPECIFICITY. |
| [8] | "Intracellular Ca2+ and the phospholipid PIP2 regulate the taste transduction ion channel TRPM5." Liu D., Liman E.R. Proc. Natl. Acad. Sci. U.S.A. 100:15160-15165(2003) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION, ENZYME REGULATION. |
| [9] | "Comparison of functional properties of the Ca2+-activated cation channels TRPM4 and TRPM5 from mice." Ullrich N.D., Voets T., Prenen J., Vennekens R., Talavera K., Droogmans G., Nilius B. Cell Calcium 37:267-278(2005) [PubMed] [Europe PMC] [Abstract] Cited for: ENZYME REGULATION. |
| [10] | "Extracellular acid block and acid-enhanced inactivation of the Ca2+-activated cation channel TRPM5 involve residues in the S3-S4 and S5-S6 extracellular domains." Liu D., Zhang Z., Liman E.R. J. Biol. Chem. 280:20691-20699(2005) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION, MUTAGENESIS OF GLU-831; HIS-897 AND HIS-935. |
| [11] | "Heat activation of TRPM5 underlies thermal sensitivity of sweet taste." Talavera K., Yasumatsu K., Voets T., Droogmans G., Shigemura N., Ninomiya Y., Margolskee R.F., Nilius B. Nature 438:1022-1025(2005) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION. |
| [12] | "Arachidonic acid can function as a signaling modulator by activating the TRPM5 cation channel in taste receptor cells." Oike H., Wakamori M., Mori Y., Nakanishi H., Taguchi R., Misaka T., Matsumoto I., Abe K. Biochim. Biophys. Acta 1761:1078-1084(2006) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION. |
| [13] | "Trpm5 null mice respond to bitter, sweet, and umami compounds." Damak S., Rong M., Yasumatsu K., Kokrashvili Z., Perez C.A., Shigemura N., Yoshida R., Mosinger B. Jr., Glendinning J.I., Ninomiya Y., Margolskee R.F. Chem. Senses 31:253-264(2006) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION, DISRUPTION PHENOTYPE. |
| [14] | "TRPM5, a taste-signaling transient receptor potential ion-channel, is a ubiquitous signaling component in chemosensory cells." Kaske S., Krasteva G., Koenig P., Kummer W., Hofmann T., Gudermann T., Chubanov V. BMC Neurosci. 8:49-49(2007) [PubMed] [Europe PMC] [Abstract] Cited for: TISSUE SPECIFICITY. |
| [15] | "The transduction channel TRPM5 is gated by intracellular calcium in taste cells." Zhang Z., Zhao Z., Margolskee R., Liman E. J. Neurosci. 27:5777-5786(2007) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION. |
| [16] | "Olfactory neurons expressing transient receptor potential channel M5 (TRPM5) are involved in sensing semiochemicals." Lin W., Margolskee R., Donnert G., Hell S.W., Restrepo D. Proc. Natl. Acad. Sci. U.S.A. 104:2471-2476(2007) [PubMed] [Europe PMC] [Abstract] Cited for: FUNCTION, TISSUE SPECIFICITY. |
| + | Additional computationally mapped references. |
Cross-references
Sequence databases | |
|---|---|
| EMBL GenBank DDBJ | AB039952 mRNA. Translation: BAA96877.1. AF228681 mRNA. Translation: AAF98120.1. AJ251835 Genomic DNA. Translation: CAC19456.1. Frameshift. AJ251835 Genomic DNA. Translation: CAC19457.1. AJ271092 mRNA. Translation: CAB94717.2. Frameshift. AY280364 mRNA. Translation: AAP44476.1. AY280365 mRNA. Translation: AAP44477.1. BC133712 mRNA. Translation: AAI33713.1. AK161030 mRNA. Translation: BAE36157.1. |
| IPI | IPI00344348. IPI00886240. IPI00890160. |
| RefSeq | NP_064673.2. NM_020277.2. |
| UniGene | Mm.286668. |
3D structure databases | |
| ProteinModelPortal | Q9JJH7. |
| SMR | Q9JJH7. Positions 1078-1123. |
| ModBase | Search... |
PTM databases | |
| PhosphoSite | Q9JJH7. |
Proteomic databases | |
| PRIDE | Q9JJH7. |
Protocols and materials databases | |
| StructuralBiologyKnowledgebase | Search... |
Genome annotation databases | |
| Ensembl | ENSMUST00000009390; ENSMUSP00000009390; ENSMUSG00000009246. ENSMUST00000150867; ENSMUSP00000114302; ENSMUSG00000009246. |
| GeneID | 56843. |
| KEGG | mmu:56843. |
| UCSC | uc009koz.1. mouse. |
Organism-specific databases | |
| CTD | 29850. |
| MGI | MGI:1861718. Trpm5. |
Phylogenomic databases | |
| eggNOG | NOG253824. |
| GeneTree | ENSGT00650000093200. |
| HOVERGEN | HBG108337. |
| InParanoid | Q9JJH7. |
| KO | K04980. |
| OMA | ECYSNSE. |
| OrthoDB | EOG47D9FD. |
Gene expression databases | |
| Bgee | Q9JJH7. |
| Genevestigator | Q9JJH7. |
Family and domain databases | |
| ProtoNet | Search... |
Other | |
| NextBio | 313391. |
| SOURCE | Search... |
Entry information
| Entry name | TRPM5_MOUSE | ||||||||
| Accession | Primary (citable) accession number: Q9JJH7 Secondary accession number(s): A3KN89 Q9EPM4 | ||||||||
| Entry history |
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| Entry status | Reviewed (UniProtKB/Swiss-Prot) | ||||||||
| Annotation program | Chordata Protein Annotation Program | ||||||||
Relevant documents
| MGD cross-references Mouse Genome Database (MGD) cross-references in UniProtKB/Swiss-Prot |
| SIMILARITY comments Index of protein domains and families |

Clusters with
