Reviewed,
UniProtKB/Swiss-Prot Q9UHC3 (ACCN3_HUMAN)
Last modified
December 15, 2009.
Version 73.
History...
Clusters with 100%,
90%,
50% identity |
Documents (5) |
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Names and origin
| Protein names | Recommended name: Amiloride-sensitive cation channel 3 Alternative name(s): Neuronal amiloride-sensitive cation channel 3 Acid-sensing ion channel 3 Short name=ASIC3 Short name=hASIC3 Testis sodium channel 1 Short name=hTNaC1 | ||||
| Gene names |
| ||||
| Organism | Homo sapiens (Human) [Complete proteome] | ||||
| Taxonomic identifier | 9606 [NCBI] | ||||
| Taxonomic lineage | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Primates › Haplorrhini › Catarrhini › Hominidae › Homo |
Protein attributes
| Sequence length | 531 AA. |
| Sequence status | Complete. |
| Sequence processing | The displayed sequence is not processed. |
| Protein existence | Evidence at protein level. |
General annotation (Comments)
| Function | Cation channel with high affinity for sodium, which is gated by extracellular protons and inhibited by the diuretic amiloride. Generates a biphasic current with a fast inactivating and a slow sustained phase. In sensory neurons is proposed to mediate the pain induced by acidosis that occurs in ischemic, damaged or inflamed tissue. May be involved in hyperalgesia. May play a role in mechanoreception. Heteromeric channel assembly seems to modulate channel properties. Ref.2 Ref.3 |
| Subunit structure | Homotetramer or heterotetramer with other ASIC proteins Probable. Interacts with STOM and DLG4 By similarity. Interacts with LIN7B, MAGI1/BAIAP1, GOPC and ACCN1. |
| Subcellular location | Cell membrane; Multi-pass membrane protein By similarity. Cytoplasm By similarity. Note: Cell surface expression may be stabilized by interaction with LIN7B and cytoplasmic retention by interaction with DLG4. In part cytoplasmic in cochlea cells By similarity. |
| Tissue specificity | Expressed by sensory neurons. Strongly expressed in brain, spinal chord, lung, lymph nodes, kidney, pituitary, heart and testis. Ref.3 Ref.1 |
| Developmental stage | Expressed in fetal tissues, expression increases in lung and kidney adult tissues. Ref.3 |
| Domain | The PDZ domain-binding motif is involved in interaction with LIN7A, GOPC and MAGI1. |
| Post-translational modification | Phosphorylated by PKA. Phosphorylated by PKC. In vitro, PRKCABP/PICK-1 is necessary for PKC phosphorylation and activation of a ACCN3/ASIC3-ACCN1/ASIC2b channel, but does not activate a homomeric ACCN3 channel By similarity. |
| Miscellaneous | Potentiated by FMRFamide-related neuropeptides. Sensitized and potentiated by NPSF. Regulated by lactate and Ca2+. Inhibited by anti-inflammatory drugs, like salicylic acid By similarity. Sensitized and potentiated by NPFF. |
| Sequence similarities | Belongs to the amiloride-sensitive sodium channel family. |
| Sequence caution | The sequence BAA25897.1 differs from that shown. Reason: Frameshift at positions 303, 305 and 313. |
Ontologies
| Keywords | |
|---|---|
| Biological process | Ion transport Sodium transport Transport |
| Cellular component | Cell membrane Cytoplasm Membrane |
| Coding sequence diversity | Alternative splicing Polymorphism |
| Domain | Transmembrane |
| Ligand | Sodium |
| Molecular function | Ionic channel Sodium channel |
| PTM | Glycoprotein Phosphoprotein |
| Technical term | Complete proteome |
| Gene Ontology (GO) | |
| Biological process | sensory perception Ref.2 Traceable author statement. Source: ProtInc signal transduction Ref.2Traceable author statement. Source: ProtInc sodium ion transportInferred from electronic annotation. Source: UniProtKB-KW |
| Cellular component | cytoplasm Inferred from electronic annotation. Source: UniProtKB-SubCell integral to plasma membrane Ref.1Traceable author statement. Source: ProtInc |
| Molecular function | amiloride-sensitive sodium channel activity Inferred from electronic annotation. Source: InterPro sodium ion bindingInferred from electronic annotation. Source: UniProtKB-KW |
| Complete GO annotation... | |
Alternative products
| This entry describes 4 isoforms produced by alternative splicing. [Align] [Select] | ||||||
| Isoform 1 (identifier: Q9UHC3-1) 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 (identifier: Q9UHC3-2) Also known as: ASIC3b; The sequence of this isoform differs from the canonical sequence as follows: 487-531: LQEGLGSHRT...HRTCYLVTQL → TSHPSLCRHQ...AFPSSPQIKS | ||||||
| Isoform 3 (identifier: Q9UHC3-3) Also known as: ASIC3c; The sequence of this isoform differs from the canonical sequence as follows: 506-531: RPPTPPCAVTKTLSASHRTCYLVTQL → STLLCSEDLPPLPVPSPRLSPPPTAPATLSHSSRPAVCVLGAPP | ||||||
| Isoform 4 (identifier: Q9UHC3-4) Also known as: c; The sequence of this isoform differs from the canonical sequence as follows: 356-407: DAMLRKDSCA...NRSEAYIAEN → GRTCWPWTSS...GPACSPSSRS 408-531: Missing. |
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||
Molecule processing | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Chain | 1 – 531 | 531 | Amiloride-sensitive cation channel 3 | PRO_0000181301 | |||||
Regions | |||||||||
| Topological domain | 1 – 43 | 43 | Cytoplasmic Potential | ||||||
| Transmembrane | 44 – 61 | 18 | Potential | ||||||
| Topological domain | 62 – 441 | 380 | Extracellular Potential | ||||||
| Transmembrane | 442 – 460 | 19 | Potential | ||||||
| Topological domain | 461 – 531 | 71 | Cytoplasmic Potential | ||||||
| Motif | 528 – 531 | 4 | PDZ-binding | ||||||
Sites | |||||||||
| Site | 26 | 1 | Potassium ion selectivity and permeability By similarity | ||||||
Amino acid modifications | |||||||||
| Modified residue | 375 | 1 | Phosphotyrosine Ref.12 | ||||||
| Modified residue | 521 | 1 | Phosphoserine By similarity | ||||||
| Glycosylation | 175 | 1 | N-linked (GlcNAc...) Potential | ||||||
| Glycosylation | 398 | 1 | N-linked (GlcNAc...) Potential | ||||||
Natural variations | |||||||||
| Alternative sequence | 356 – 407 | 52 | DAMLR…YIAEN → GRTCWPWTSSLRPSTMRPWS RRRPMRCQSCLVTLGARWGC SSGPACSPSSRS in isoform 4. | VSP_015600 | |||||
| Alternative sequence | 408 – 531 | 124 | Missing in isoform 4. | VSP_015601 | |||||
| Alternative sequence | 487 – 531 | 45 | LQEGL…LVTQL → TSHPSLCRHQDSLRLPPHLL PCHTALDLLSVSSEPRPDIL DMPSLHVAFPSSPQIKS in isoform 2. | VSP_015602 | |||||
| Alternative sequence | 506 – 531 | 26 | RPPTP…LVTQL → STLLCSEDLPPLPVPSPRLS PPPTAPATLSHSSRPAVCVL GAPP in isoform 3. | VSP_015603 | |||||
| Natural variant | 228 | 1 | N → S: dbSNP rs1864545. | VAR_052037 | |||||
Experimental info | |||||||||
| Mutagenesis | 528 | 1 | V → A: No effect on interaction with LIN7B, MAGI1 and GOPC. Ref.11 | ||||||
| Mutagenesis | 529 | 1 | T → A: Loss of interaction with LIN7B, MAGI1. Ref.11 | ||||||
| Mutagenesis | 530 | 1 | Q → A: Loss of interaction with GOPC. No effect on interaction LIN7B and MAGI1. Ref.11 | ||||||
| Mutagenesis | 531 | 1 | L → A: Loss of interaction with LIN7B, MAGI1 and GOPC. Ref.11 | ||||||
| Sequence conflict | 13 | 1 | P → Q Ref.1 | ||||||
| Sequence conflict | 13 | 1 | P → Q Ref.3 | ||||||
| Sequence conflict | 14 | 1 | A → P Ref.3 | ||||||
| Sequence conflict | 85 | 1 | I → V in AAC62935. Ref.3 | ||||||
| Sequence conflict | 243 – 244 | 2 | SQ → GH in BAA25897. Ref.1 | ||||||
| Sequence conflict | 358 | 1 | M → I in AAC62935. Ref.3 | ||||||
| Sequence conflict | 397 | 1 | L → F in BAA25897. Ref.1 | ||||||
| Sequence conflict | 400 | 1 | S → R in BAA25897. Ref.1 | ||||||
| Sequence conflict | 518 | 1 | L → F in BAA25897. Ref.1 | ||||||
Sequences
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References
| « Hide 'large scale' references | |
| [1] | "Molecular cloning of a DEG/ENaC sodium channel cDNA from human testis." Ishibashi K., Marumo F. Biochem. Biophys. Res. Commun. 245:589-593(1998) [PubMed: 9571199] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1), TISSUE SPECIFICITY. Tissue: Testis. |
| [2] | "Identification, functional expression and chromosomal localisation of a sustained human proton-gated cation channel." de Weille J.R., Bassilana F., Lazdunski M., Waldmann R. FEBS Lett. 433:257-260(1998) [PubMed: 9744806] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1), FUNCTION. Tissue: Embryo. |
| [3] | "Molecular cloning and regional distribution of a human proton receptor subunit with biphasic functional properties." Babinski K., Le K.-T., Seguela P. J. Neurochem. 72:51-57(1999) [PubMed: 9886053] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1), TISSUE SPECIFICITY, DEVELOPMENTAL STAGE, FUNCTION. Tissue: Fetal brain. |
| [4] | "ASIC3b and ASIC3c, new modulatory subunits of the acid sensing ion channel family." Renard S., Besnard F., Partiseti M., Graham D. Submitted (OCT-1999) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORMS 2 AND 3). |
| [5] | "Complete sequencing and characterization of 21,243 full-length human cDNAs." Ota T., Suzuki Y., Nishikawa T., Otsuki T., Sugiyama T., Irie R., Wakamatsu A., Hayashi K., Sato H., Nagai K., Kimura K., Makita H., Sekine M., Obayashi M., Nishi T., Shibahara T., Tanaka T., Ishii S. Sugano S.Nat. Genet. 36:40-45(2004) [PubMed: 14702039] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 2). Tissue: Brain. |
| [6] | Totoki Y., Toyoda A., Takeda T., Sakaki Y., Tanaka A., Yokoyama S., Ohara O., Nagase T., Kikuno R.F. Submitted (MAR-2005) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 4). Tissue: Brain. |
| [7] | Mural R.J., Istrail S., Sutton G.G., Florea L., Halpern A.L., Mobarry C.M., Lippert R., Walenz B., Shatkay H., Dew I., Miller J.R., Flanigan M.J., Edwards N.J., Bolanos R., Fasulo D., Halldorsson B.V., Hannenhalli S., Turner R. Venter J.C.Submitted (SEP-2005) to the EMBL/GenBank/DDBJ databases Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. |
| [8] | "Mammalian ASIC2a and ASIC3 subunits co-assemble into heteromeric proton-gated channels sensitive to Gd3+." Babinski K., Catarsi S., Biagini G., Seguela P. J. Biol. Chem. 275:28519-28525(2000) [PubMed: 10842183] [Abstract] Cited for: INTERACTION WITH ACCN1. |
| [9] | "Selective modulation of heteromeric ASIC proton-gated channels by neuropeptide FF." Catarsi S., Babinski K., Seguela P. Neuropharmacology 41:592-600(2001) [PubMed: 11587714] [Abstract] Cited for: REGULATION BY NPFF. |
| [10] | "cAMP-dependent protein kinase phosphorylation of the acid-sensing ion channel-1 regulates its binding to the protein interacting with C-kinase-1." Leonard A.S., Yermolaieva O., Hruska-Hageman A., Askwith C.C., Price M.P., Wemmie J.A., Welsh M.J. Proc. Natl. Acad. Sci. U.S.A. 100:2029-2034(2003) [PubMed: 12578970] [Abstract] Cited for: PHOSPHORYLATION BY PKA. |
| [11] | "PSD-95 and Lin-7b interact with acid-sensing ion channel-3 and have opposite effects on H+- gated current." Hruska-Hageman A.M., Benson C.J., Leonard A.S., Price M.P., Welsh M.J. J. Biol. Chem. 279:46962-46968(2004) [PubMed: 15317815] [Abstract] Cited for: INTERACTION WITH LIN7B; MAGI1 AND GOPC, MUTAGENESIS OF VAL-528; THR-529; GLN-530 AND LEU-531. |
| [12] | "Quantitative phosphoproteome profiling of Wnt3a-mediated signaling network: indicating the involvement of ribonucleoside-diphosphate reductase M2 subunit phosphorylation at residue serine 20 in canonical Wnt signal transduction." Tang L.-Y., Deng N., Wang L.-S., Dai J., Wang Z.-L., Jiang X.-S., Li S.-J., Li L., Sheng Q.-H., Wu D.-Q., Li L., Zeng R. Mol. Cell. Proteomics 6:1952-1967(2007) [PubMed: 17693683] [Abstract] Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT TYR-375, MASS SPECTROMETRY. |
| + | Additional computationally mapped references. |
Cross-references
Sequence databases | |
|---|---|
| AB010575 mRNA. Translation: BAA25897.1. Frameshift. AF095897 mRNA. Translation: AAC64188.1. AF057711 mRNA. Translation: AAC62935.1. AF195024 mRNA. Translation: AAF19817.1. AF195025 mRNA. Translation: AAF19818.1. AK313926 mRNA. Translation: BAG36647.1. AB209421 mRNA. Translation: BAD92658.1. Different initiation. CH471173 Genomic DNA. Translation: EAW54052.1. | |
| IPI | IPI00025345. IPI00220064. IPI00295344. IPI00556174. |
| PIR | JE0091. |
| RefSeq | NP_004760.1. NP_064717.1. NP_064718.1. |
| UniGene | Hs.647113 |
3D structure databases | |
| ModBase | Search... |
Protein-protein interaction databases | |
| STRING | Q9UHC3. |
Proteomic databases | |
| PRIDE | Q9UHC3. |
Genome annotation databases | |
| Ensembl | ENST00000349064; ENSP00000344838; ENSG00000213199; Homo sapiens. [Genome view] |
| GeneID | 9311. |
| KEGG | hsa:9311. |
| UCSC | uc003win.2. human. uc003wio.2. human. uc003wip.2. human. |
Organism-specific databases | |
| CTD | 9311. |
| GeneCards | GC07P150357. |
| H-InvDB | HIX0058417. |
| HGNC | HGNC:101. ACCN3. |
| MIM | 611741. gene. |
| PharmGKB | PA24435. |
| GenAtlas | Search... |
Phylogenomic databases | |
| HOVERGEN | Q9UHC3. |
| OMA | GHALEDM. |
Gene expression databases | |
| ArrayExpress | Q9UHC3. |
| Bgee | Q9UHC3. |
| CleanEx | HS_ACCN3. |
| Genevestigator | Q9UHC3. |
| GermOnline | ENSG00000197150. Homo sapiens. |
Family and domain databases | |
| InterPro | IPR004724. EnaC. IPR001873. Na+channel_ASC. [Graphical view] |
| PANTHER | PTHR11690. Na+channel_ASC. 1 hit. |
| Pfam | PF00858. ASC. 1 hit. [Graphical view] |
| PRINTS | PR01078. AMINACHANNEL. |
| PROSITE | PS01206. ASC. 1 hit. [Graphical view] |
| ProtoNet | Search... |
Other Resources | |
| NextBio | 34875. |
| SOURCE | Search... |
Entry information
| Entry name | ACCN3_HUMAN | ||||||||
| Accession | Primary (citable) accession number: Q9UHC3 Secondary accession number(s): B2R9V0 Q9UHC4 | ||||||||
| Entry history |
| ||||||||
| Entry status | Reviewed (UniProtKB/Swiss-Prot) | ||||||||
| Annotation project | HPI (Human Proteome Initiative) | ||||||||
| Disclaimer | Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care. | ||||||||
Relevant documents
| Human chromosome 7 Human chromosome 7: entries, gene names and cross-references to MIM |
| Human entries with polymorphisms or disease mutations List of human entries with polymorphisms or disease mutations |
| Human polymorphisms and disease mutations Index of human polymorphisms and disease mutations |
| MIM cross-references Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot |
| SIMILARITY comments Index of protein domains and families |

Clusters with


