ASIC4
gene geneOn this page
Also known as BNAC4
Summary
ASIC4 (acid sensing ion channel subunit family member 4, HGNC:21263) is a protein-coding gene on chromosome 2q35, encoding Acid-sensing ion channel 4 (Q96FT7). Does not exhibit measurable stand-alone pH-gated sodium channel activity but may form pH-gated heterotrimeric sodium channels.
This gene belongs to the superfamily of acid-sensing ion channels, which are proton-gated, amiloride-sensitive sodium channels. These channels have been implicated in synaptic transmission, pain perception as well as mechanoperception. This gene is predominantly expressed in the pituitary gland, and was considered a candidate for paroxysmal dystonic choreoathetosis (PDC), a movement disorder, however, no correlation was found between mutations in this gene and PDC.
Source: NCBI Gene 55515 — RefSeq curated summary.
At a glance
- GWAS associations: 2
- Clinical variants (ClinVar): 14 total
- GTEx eGene: eQTL in 16 tissues, sQTL in 1 (q < 0.05)
- Constraint (gnomAD): pLI 0.00 (LoF-tolerant), LOEUF 0.69 (unconstrained)
- MANE Select transcript:
NM_018674
Identifiers
Gene identifiers
| Field | Value |
|---|---|
| HGNC ID | HGNC:21263 |
| Approved symbol | ASIC4 |
| Name | acid sensing ion channel subunit family member 4 |
| Location | 2q35 |
| Locus type | gene with protein product |
| Status | Approved |
| Aliases | BNAC4 |
| Ensembl gene | ENSG00000072182 |
| Ensembl biotype | protein_coding |
| OMIM | 606715 |
| Entrez | 55515 |
Gene structure
Transcript identifiers
Ensembl transcripts: 6 — 3 protein_coding, 2 retained_intron, 1 protein_coding_CDS_not_defined
MANE Select: ENST00000358078
Transcript support level (Ensembl TSL; 1 = fully mRNA-supported): TSL 1: 3, TSL 2: 1, TSL 5: 1
ENST00000358078, ENST00000347842, ENST00000461395, ENST00000473709, ENST00000474489, ENST00000693692
RefSeq mRNA: 2 — MANE Select: NM_018674
NM_018674, NM_182847
CCDS: CCDS2442, CCDS33384
Canonical transcript exons
ENST00000358078 — 10 exons
| Exon | Start | End |
|---|---|---|
| ENSE00000786129 | 219537632 | 219537736 |
| ENSE00001181728 | 219514482 | 219515306 |
| ENSE00001331872 | 219537933 | 219538772 |
| ENSE00002392208 | 219537242 | 219537321 |
| ENSE00003512191 | 219532883 | 219532939 |
| ENSE00003548274 | 219537066 | 219537157 |
| ENSE00003550735 | 219531758 | 219531902 |
| ENSE00003577635 | 219532315 | 219532477 |
| ENSE00003586548 | 219535171 | 219535324 |
| ENSE00003673055 | 219532001 | 219532128 |
Expression profiles
Bgee: expression breadth ubiquitous, 131 present calls, max score 88.63.
FANTOM5 (CAGE): breadth broad, TPM avg 2.1418 / max 125.7250, expressed in 232 samples.
Highest expression (Bgee): pituitary gland, adenohypophysis, vena cava, type B pancreatic cell, cerebellar hemisphere.
Genetic regulation across tissues (GTEx eQTL / sQTL)
ASIC4 is an eGene in GTEx v10 — its expression is genetically regulated (eQTL) in 16 tissues and its splicing (sQTL) in 1 (q < 0.05). Strongest associations first; slope = normalized effect of the lead variant’s alternative allele.
17 significant tissue × QTL associations:
| Tissue | QTL | q-value | Slope | Lead variant |
|---|---|---|---|---|
| Testis | sqtl | 1.9e-63 | -1.22 | 2:219536406:T:C |
| Testis | eqtl | 9.1e-52 | +0.88 | 2:219536406:T:C |
| Muscle Skeletal | eqtl | 6.0e-14 | +0.90 | 2:219498443:A:G |
| Nerve Tibial | eqtl | 2.7e-12 | -0.33 | 2:219511132:T:C |
| Artery Tibial | eqtl | 1.3e-08 | +0.88 | 2:219498443:A:G |
| Heart Atrial Appendage | eqtl | 1.3e-08 | +0.39 | 2:219537902:G:T |
| Artery Aorta | eqtl | 3.2e-05 | +0.30 | 2:219491798:G:T |
| Cells Cultured fibroblasts | eqtl | 1.5e-04 | +0.22 | 2:219499195:G:A |
| Brain Cerebellum | eqtl | 6.4e-04 | -0.54 | 2:219507911:T:C |
| Artery Coronary | eqtl | 1.2e-03 | -0.44 | 2:219559047:C:G |
| Adipose Subcutaneous | eqtl | 3.5e-03 | +0.17 | 2:219510228:T:G |
| Lung | eqtl | 5.2e-03 | -0.24 | 2:219519821:C:T |
| Colon Sigmoid | eqtl | 8.9e-03 | -0.26 | 2:219520728:A:C |
| Brain Cerebellar Hemisphere | eqtl | 1.8e-02 | +1.38 | 2:219480752:T:A |
| Breast Mammary Tissue | eqtl | 2.1e-02 | -0.21 | 2:219511132:T:C |
| Prostate | eqtl | 3.6e-02 | -0.31 | 2:219553834:C:G |
| Brain Hypothalamus | eqtl | 5.0e-02 | -0.49 | 2:219868409:T:C |
FANTOM5 promoters
4 alternative TSS:
| Promoter ID | TPM avg | Samples expressed |
|---|---|---|
| 25518 | 1.2462 | 151 |
| 25519 | 0.4440 | 93 |
| 25517 | 0.3991 | 170 |
| 202577 | 0.0524 | 26 |
Top tissues by expression
showing 100 of 261 tissues by Bgee expression score (0-100, higher = more expressed):
| Tissue | Anatomy ID | Expression score | Quality |
|---|---|---|---|
| pituitary gland | UBERON:0000007 | 88.63 | gold quality |
| adenohypophysis | UBERON:0002196 | 86.75 | gold quality |
| vena cava | UBERON:0004087 | 82.67 | gold quality |
| type B pancreatic cell | CL:0000169 | 82.00 | gold quality |
| cerebellar hemisphere | UBERON:0002245 | 80.74 | gold quality |
| olfactory bulb | UBERON:0002264 | 80.74 | gold quality |
| right hemisphere of cerebellum | UBERON:0014890 | 80.74 | gold quality |
| cerebellar cortex | UBERON:0002129 | 80.45 | gold quality |
| amygdala | UBERON:0001876 | 80.35 | gold quality |
| cerebellum | UBERON:0002037 | 79.49 | gold quality |
| cingulate cortex | UBERON:0003027 | 79.05 | gold quality |
| anterior cingulate cortex | UBERON:0009835 | 79.00 | gold quality |
| lateral nuclear group of thalamus | UBERON:0002736 | 78.65 | silver quality |
| tongue squamous epithelium | UBERON:0006919 | 78.50 | gold quality |
| body of tongue | UBERON:0011876 | 77.45 | gold quality |
| pons | UBERON:0000988 | 77.00 | gold quality |
| right frontal lobe | UBERON:0002810 | 76.94 | gold quality |
| hypothalamus | UBERON:0001898 | 76.46 | gold quality |
| skeletal muscle tissue of rectus abdominis | UBERON:0004511 | 76.45 | gold quality |
| substantia nigra | UBERON:0002038 | 75.96 | gold quality |
| tongue | UBERON:0001723 | 75.91 | gold quality |
| nucleus accumbens | UBERON:0001882 | 75.86 | gold quality |
| midbrain | UBERON:0001891 | 75.84 | gold quality |
| prefrontal cortex | UBERON:0000451 | 75.68 | gold quality |
| gluteal muscle | UBERON:0002000 | 75.40 | silver quality |
| brain | UBERON:0000955 | 75.07 | gold quality |
| temporal lobe | UBERON:0001871 | 75.04 | gold quality |
| triceps brachii | UBERON:0001509 | 74.96 | gold quality |
| cardia of stomach | UBERON:0001162 | 74.91 | gold quality |
| forebrain | UBERON:0001890 | 74.79 | gold quality |
| pharyngeal mucosa | UBERON:0000355 | 74.69 | gold quality |
| inferior vagus X ganglion | UBERON:0005363 | 74.69 | gold quality |
| diaphragm | UBERON:0001103 | 74.66 | gold quality |
| nasal cavity epithelium | UBERON:0005384 | 74.66 | gold quality |
| substantia nigra pars compacta | UBERON:0001965 | 74.52 | silver quality |
| substantia nigra pars reticulata | UBERON:0001966 | 74.45 | gold quality |
| parotid gland | UBERON:0001831 | 74.40 | gold quality |
| superior surface of tongue | UBERON:0007371 | 74.25 | gold quality |
| thymus | UBERON:0002370 | 74.24 | silver quality |
| frontal cortex | UBERON:0001870 | 74.21 | gold quality |
| neocortex | UBERON:0001950 | 74.16 | gold quality |
| pericardium | UBERON:0002407 | 74.06 | gold quality |
| vastus lateralis | UBERON:0001379 | 74.02 | gold quality |
| male germ line stem cell (sensu Vertebrata) in testis | CL:0000089 ∩ UBERON:0000473 | 73.99 | silver quality |
| Ammon’s horn | UBERON:0001954 | 73.96 | gold quality |
| trachea | UBERON:0003126 | 73.88 | gold quality |
| lateral globus pallidus | UBERON:0002476 | 73.87 | gold quality |
| nipple | UBERON:0002030 | 73.75 | gold quality |
| saphenous vein | UBERON:0007318 | 73.70 | gold quality |
| dorsolateral prefrontal cortex | UBERON:0009834 | 73.59 | gold quality |
| pylorus | UBERON:0001166 | 73.50 | gold quality |
| telencephalon | UBERON:0001893 | 73.39 | gold quality |
| cerebral cortex | UBERON:0000956 | 73.25 | gold quality |
| putamen | UBERON:0001874 | 73.10 | gold quality |
| quadriceps femoris | UBERON:0001377 | 72.94 | gold quality |
| dorsal motor nucleus of vagus nerve | UBERON:0002870 | 72.80 | gold quality |
| synovial joint | UBERON:0002217 | 72.79 | gold quality |
| Brodmann (1909) area 9 | UBERON:0013540 | 72.77 | gold quality |
| caudate nucleus | UBERON:0001873 | 72.47 | gold quality |
| inferior olivary complex | UBERON:0002127 | 72.25 | gold quality |
| trigeminal ganglion | UBERON:0001675 | 72.21 | gold quality |
| penis | UBERON:0000989 | 72.17 | gold quality |
| cervix squamous epithelium | UBERON:0006922 | 71.97 | gold quality |
| heart right ventricle | UBERON:0002080 | 71.87 | gold quality |
| renal medulla | UBERON:0000362 | 71.66 | gold quality |
| myocardium | UBERON:0002349 | 71.40 | gold quality |
| spinal cord | UBERON:0002240 | 71.35 | gold quality |
| orbitofrontal cortex | UBERON:0004167 | 71.33 | gold quality |
| skeletal muscle tissue of biceps brachii | UBERON:0004502 | 71.22 | gold quality |
| C1 segment of cervical spinal cord | UBERON:0006469 | 71.06 | gold quality |
| dorsal root ganglion | UBERON:0000044 | 70.73 | gold quality |
| superficial temporal artery | UBERON:0001614 | 69.41 | gold quality |
| cervix epithelium | UBERON:0004801 | 69.14 | gold quality |
| occipital lobe | UBERON:0002021 | 69.11 | gold quality |
| layer of synovial tissue | UBERON:0007616 | 69.10 | gold quality |
| upper arm skin | UBERON:0004263 | 68.59 | gold quality |
| urethra | UBERON:0000057 | 68.58 | gold quality |
| left ventricle myocardium | UBERON:0006566 | 67.91 | gold quality |
| biceps brachii | UBERON:0001507 | 67.86 | gold quality |
| globus pallidus | UBERON:0001875 | 67.49 | gold quality |
| superior frontal gyrus | UBERON:0002661 | 67.43 | gold quality |
| cardiac muscle of right atrium | UBERON:0003379 | 67.37 | gold quality |
| CA1 field of hippocampus | UBERON:0003881 | 67.28 | gold quality |
| primary visual cortex | UBERON:0002436 | 67.15 | gold quality |
| cerebellar vermis | UBERON:0004720 | 66.49 | gold quality |
| jejunum | UBERON:0002115 | 66.44 | gold quality |
| epithelial cell of pancreas | CL:0000083 | 66.41 | gold quality |
| medial globus pallidus | UBERON:0002477 | 65.60 | gold quality |
| skeletal muscle tissue | UBERON:0001134 | 65.45 | gold quality |
| deltoid | UBERON:0001476 | 64.48 | gold quality |
| mammalian vulva | UBERON:0000997 | 64.10 | gold quality |
| periodontal ligament | UBERON:0008266 | 64.02 | gold quality |
| pigmented layer of retina | UBERON:0001782 | 63.22 | gold quality |
| squamous epithelium | UBERON:0006914 | 62.56 | gold quality |
| Brodmann (1909) area 23 | UBERON:0013554 | 62.47 | gold quality |
| kidney epithelium | UBERON:0004819 | 61.72 | gold quality |
| bronchus | UBERON:0002185 | 61.54 | gold quality |
| secondary oocyte | CL:0000655 | 61.40 | gold quality |
| epithelium of bronchus | UBERON:0002031 | 61.15 | gold quality |
| mucosa of urinary bladder | UBERON:0001259 | 61.08 | gold quality |
Single-cell (SCXA)
Detected in 3 experiment(s), a significant marker in 3.
| Experiment | Marker? | Max mean expression |
|---|---|---|
| E-MTAB-7316 | yes | 31.77 |
| E-GEOD-137537 | yes | 17.58 |
| E-ANND-3 | yes | 3.11 |
HPA expression
RNA tissue specificity: Group enriched
44 HPA tissues / cells by nTPM:
| Tissue / cell | Axis | nTPM |
|---|---|---|
| Caudate putamen | tissue | 73.3 |
| Thalamus | tissue | 11.5 |
| Frontal cortex | tissue | 8.4 |
| Superior colliculi | tissue | 7.9 |
| Pituitary gland | tissue | 7.4 |
| Putamen | tissue | 6.4 |
| Retina | tissue | 6.0 |
| Basal ganglia | tissue | 5.9 |
| Olfactory bulb | tissue | 5.4 |
| Ventral forebrain | tissue | 5.2 |
| Midbrain | tissue | 4.3 |
| Periaqueductal gray | tissue | 4.0 |
| Hippocampus | tissue | 3.7 |
| Nucleus accumbens | tissue | 3.5 |
| Pons | tissue | 3.4 |
| Locus coeruleus | tissue | 3.2 |
| Septum | tissue | 3.0 |
| Hypothalamus | tissue | 2.9 |
| Prefrontal cortex | tissue | 2.7 |
| Cerebral cortex | tissue | 2.7 |
| Motor cortex | tissue | 2.7 |
| Hippocampal formation | tissue | 2.7 |
| Entorhinal cortex | tissue | 2.7 |
| Amygdala | tissue | 2.6 |
| Substantia nigra | tissue | 2.6 |
| Insular cortex | tissue | 2.6 |
| Retrosplenial and cingulate cortex | tissue | 2.5 |
| Temporal cortex | tissue | 2.4 |
| Retrosplenial cortex | tissue | 2.3 |
| Somatosensory cortex | tissue | 2.2 |
| Postcentral gyrus | tissue | 2.1 |
| Medulla oblongata | tissue | 2.0 |
| Occipital cortex | tissue | 2.0 |
| Spinal cord | tissue | 1.9 |
| Corpus callosum | tissue | 1.4 |
| Adrenal gland | tissue | 1.0 |
| Testis | tissue | 0.4 |
| Choroid plexus | tissue | 0.4 |
| Cervix | tissue | 0.1 |
| Vagina | tissue | 0.1 |
| Seminal vesicle | tissue | 0.1 |
| Adipose tissue | tissue | 0.1 |
| Cerebellum | tissue | 0.1 |
| Lung | tissue | 0.1 |
Brain sub-regions (HPA Brain Atlas): detected in 188; highest nTPM — Posterior thalamic nucleus (18.7), Pulvinar (18.2), Piriform cortex (17.4), Inferior colliculus (13.6), Medial geniculate body (13.6).
Regulation
Is transcription factor: no
Functional genomics
gnomAD constraint: pLI 0.000696, LOEUF 0.69, missense Z 1.47 — population loss-of-function intolerance (pLI ≥ 0.9 = LoF-intolerant; lower LOEUF = more constrained). gnomAD
Regional missense constraint (gnomAD RMC): no regional variation along ENST00000358078 — one region, missense o/e 0.89.
Literature-anchored findings (GeneRIF, showing 2)
- Data show that transfected ASIC4 is targeted to the plasma membrane in CHO-K1 cells, where it associates with ASIC1a and downregulates exogenous ASIC1a expression. (PMID:18662336)
- Acid-sensing ion channel (ASIC) 4 predominantly localizes to an early endosome-related organelle upon heterologous expression (PMID:26667795)
Cross-species orthologs
28 orthologs
| Organism | Symbol | Gene ID |
|---|---|---|
| danio_rerio | asic4b | ENSDARG00000004243 |
| danio_rerio | asic4a | ENSDARG00000025162 |
| mus_musculus | Asic4 | ENSMUSG00000033007 |
| rattus_norvegicus | Asic4 | ENSRNOG00000019985 |
| drosophila_melanogaster | Nach | FBGN0024319 |
| drosophila_melanogaster | ppk28 | FBGN0030795 |
| drosophila_melanogaster | ppk17 | FBGN0032602 |
| drosophila_melanogaster | ppk6 | FBGN0034489 |
| drosophila_melanogaster | ppk12 | FBGN0034730 |
| drosophila_melanogaster | ppk29 | FBGN0034965 |
| drosophila_melanogaster | ppk24 | FBGN0039839 |
| drosophila_melanogaster | ppk22 | FBGN0051105 |
| drosophila_melanogaster | ppk8 | FBGN0052792 |
| drosophila_melanogaster | ppk5 | FBGN0053289 |
| drosophila_melanogaster | ppk16 | FBGN0065108 |
| drosophila_melanogaster | ppk11 | FBGN0065109 |
| drosophila_melanogaster | ppk9 | FBGN0085398 |
| drosophila_melanogaster | ppk18 | FBGN0265001 |
| caenorhabditis_elegans | WBGENE00003168 | |
| caenorhabditis_elegans | WBGENE00003174 | |
| caenorhabditis_elegans | WBGENE00007518 | |
| caenorhabditis_elegans | WBGENE00009073 | |
| caenorhabditis_elegans | WBGENE00011891 | |
| caenorhabditis_elegans | delm-2 | WBGENE00016063 |
| caenorhabditis_elegans | acd-1 | WBGENE00016064 |
| caenorhabditis_elegans | acd-2 | WBGENE00016066 |
| caenorhabditis_elegans | WBGENE00016699 | |
| caenorhabditis_elegans | WBGENE00017879 |
Paralogs (8): ASIC2 (ENSG00000108684), ASIC1 (ENSG00000110881), SCNN1A (ENSG00000111319), SCNN1D (ENSG00000162572), SCNN1G (ENSG00000166828), SCNN1B (ENSG00000168447), ASIC3 (ENSG00000213199), ASIC5 (ENSG00000256394)
Mouse-model phenotypes
Observed phenotypes of the mouse ortholog (MGI:2652846) from MGI (Alliance of Genome Resources) — knockout/mutant phenotypes, ranked by annotation count. 1 distinct phenotype terms.
| Mouse phenotype (MP) | Records |
|---|---|
| decreased body length | 1 |
Additional cross-species homologs
Sequence homologs in species beyond Ensembl Compara’s model organisms, by Diamond local protein alignment (% sequence identity; best hit per species). Lower-identity rows are more distant homologs. The matched accessions’ gene symbols aren’t in biobtree yet, so each row shows the UniProt accession.
| Organism | UniProt | Identity | Method |
|---|---|---|---|
| Gallus gallus | Q1XA76 | 89.9% | Diamond |
| Opsanus tau | Q7T1N4 | 76.7% | Diamond |
| Cornu aspersum | Q25011 | 45.2% | Diamond |
Genomic neighbors (locus context)
Genes flanking this one on the chromosome (NCBI/Entrez gene neighborhood). Positional context only — some neighbors share regulatory elements (bidirectional promoters, antisense/overlapping transcripts), but chromosomal adjacency is not itself a functional relationship (see Interactions for that).
| Symbol | Type | Entrez |
|---|---|---|
| ASIC4-AS1 | ncRNA | 105373885 |
| TMEM198 | protein-coding | 130612 |
| OBSL1 | protein-coding | 23363 |
| INHA | protein-coding | 3623 |
| CHPF | protein-coding | 79586 |
| SPEG | protein-coding | 10290 |
| DES | protein-coding | 1674 |
| GMPPA | protein-coding | 29926 |
| MIR3132 | ncRNA | 100423039 |
| SPEGNB | protein-coding | 100996693 |
| DNPEP-AS1 | ncRNA | 105373884 |
| DNPEP | protein-coding | 23549 |
Protein
Protein identifiers
Acid-sensing ion channel 4 — Q96FT7 (reviewed: Q96FT7)
Alternative names: Amiloride-sensitive cation channel 4, Amiloride-sensitive cation channel 4, pituitary
All UniProt accessions (2): A0A8I5KPF5, Q96FT7
UniProt curated annotations — full annotation on UniProt →
Function. Does not exhibit measurable stand-alone pH-gated sodium channel activity but may form pH-gated heterotrimeric sodium channels. Its activity could also depend on alternative gating mechanisms.
Subunit / interactions. Homotrimer. Heterotrimer; with other ASIC proteins producing functional channels.
Subcellular location. Cell membrane.
Tissue specificity. Expressed in pituitary gland. Weakly expressed in brain, vestibular system and organ of Corti.
Similarity. Belongs to the amiloride-sensitive sodium channel (TC 1.A.6) family. ASIC4 subfamily.
Isoforms (3)
| UniProt ID | Names | Canonical? |
|---|---|---|
| Q96FT7-4 | 3 | yes |
| Q96FT7-1 | 1 | |
| Q96FT7-2 | 2 |
RefSeq proteins (2): NP_061144, NP_878267 (=MANE)
Domains & families (InterPro)
| ID | Name | Type |
|---|---|---|
| IPR001873 | ENaC | Family |
| IPR020903 | ENaC_CS | Conserved_site |
Pfam: PF00858
UniProt features (24 total): disulfide bond 7, topological domain 3, glycosylation site 3, splice variant 3, sequence variant 3, transmembrane region 2, chain 1, region of interest 1, short sequence motif 1
Structure
Predicted structure (AlphaFold)
| Model | pLDDT | Fraction very-high |
|---|---|---|
| AF-Q96FT7-F1 | 80.37 | 0.52 |
Human Protein Atlas
Protein class: Predicted membrane proteins
Protein evidence: Evidence at protein level
Subcellular location (HPA, imaging): golgi apparatus
Antibody reliability (HPA): IF approved
Functional residue map
Curated UniProt residues grouped by drug-discovery relevance — catalytic, ligand-binding, modification, and mutation-validated positions. Source: UniProtKB sequence features.
Disulfide bonds (7)
| Type | Positions |
|---|---|
| Disulfide bond | 118–202, 180–187, 296–375, 318–371, 322–369, 331–353, 333–345 |
Glycosylation sites (3)
| Type | Positions |
|---|---|
| N-linked (glcnac…) asparagine | 376, 191, 243 |
Function
Pathways and Gene Ontology
Reactome pathways
1 curated (TAS) of 3; 0 disease pathways. Curated-first; evidence = TAS (manually curated) vs IEA (electronic inference).
3 pathways:
| ID | Pathway | Evidence |
|---|---|---|
| R-HSA-2672351 | Stimuli-sensing channels | curated |
| R-HSA-983712 | Ion channel transport | — |
| R-HSA-382551 | Transport of small molecules | — |
MSigDB gene sets: 87 (showing top):
GOBP_BEHAVIOR, GOBP_SODIUM_ION_TRANSMEMBRANE_TRANSPORT, AREB6_03, GOBP_MULTICELLULAR_ORGANISMAL_RESPONSE_TO_STRESS, GOBP_MONOATOMIC_CATION_TRANSPORT, GOBP_FEAR_RESPONSE, HP1SITEFACTOR_Q6, NKX22_01, GOBP_TRANSMEMBRANE_TRANSPORT, GOBP_SODIUM_ION_TRANSPORT, SHEN_SMARCA2_TARGETS_DN, GOMF_METAL_ION_TRANSMEMBRANE_TRANSPORTER_ACTIVITY, GOMF_GATED_CHANNEL_ACTIVITY, GOMF_PASSIVE_TRANSMEMBRANE_TRANSPORTER_ACTIVITY, GOMF_MONOATOMIC_CATION_TRANSMEMBRANE_TRANSPORTER_ACTIVITY
GO Biological Process (4): sodium ion transmembrane transport (GO:0035725), monoatomic ion transport (GO:0006811), sodium ion transport (GO:0006814), monoatomic ion transmembrane transport (GO:0034220)
GO Molecular Function (3): sodium channel activity (GO:0005272), protein binding (GO:0005515), ligand-gated sodium channel activity (GO:0015280)
GO Cellular Component (2): plasma membrane (GO:0005886), membrane (GO:0016020)
Reactome top-level categories
2 top-level categories:
| Category | Pathways |
|---|---|
| Ion channel transport | 1 |
| Transport of small molecules | 1 |
GO top-level categories
14 GO namespaces:
| Category | Terms |
|---|---|
| sodium ion transport | 1 |
| monoatomic cation transmembrane transport | 1 |
| transport | 1 |
| metal ion transport | 1 |
| monoatomic ion transport | 1 |
| transmembrane transport | 1 |
| monoatomic cation channel activity | 1 |
| sodium ion transmembrane transporter activity | 1 |
| binding | 1 |
| sodium channel activity | 1 |
| ligand-gated monoatomic cation channel activity | 1 |
| membrane | 1 |
| cell periphery | 1 |
| cellular anatomical structure | 1 |
Protein interactions and networks
STRING
showing 15 of 506 interactions by confidence (×1000):
| Protein A | Protein B | Partner UniProt | Score |
|---|---|---|---|
| ASIC4 | PNKD | Q8N490 | 892 |
| ASIC4 | HAGH | Q16775 | 759 |
| ASIC4 | SLC4A3 | P48751 | 662 |
| ASIC4 | TRPV1 | Q8NER1 | 588 |
| ASIC4 | ASIC3 | Q9UHC3 | 566 |
| ASIC4 | ASIC2 | Q16515 | 478 |
| ASIC4 | TAC1 | P20366 | 473 |
| ASIC4 | NALCN | Q8IZF0 | 442 |
| ASIC4 | TRPV4 | Q9HBA0 | 401 |
| ASIC4 | TRPC1 | P48995 | 372 |
| ASIC4 | SCN4B | Q8IWT1 | 367 |
| ASIC4 | GPR65 | Q8IYL9 | 366 |
| ASIC4 | FBXO25 | Q8TCJ0 | 360 |
| ASIC4 | GPR68 | Q15743 | 358 |
| ASIC4 | TRPA1 | O75762 | 350 |
IntAct
Human interaction partners of ASIC4 in IntAct, one row per partner (best MIscore; records = supporting IntAct interaction records).
5 partners by confidence:
| Partner | Interaction type | MIscore | Records |
|---|---|---|---|
| OTX2 | physical association | 0.560 | 3 |
| CFTR | physical association | 0.370 | 2 |
| CLGN | association | 0.350 | 1 |
| TMEM131L | association | 0.350 | 1 |
| UPK3BL1 | association | 0.350 | 1 |
BioGRID (167 interactions; top human partners by supporting records): ABCA3 (Affinity Capture-MS; 2 records), ADCY3 (Affinity Capture-MS; 2 records), ALG12 (Affinity Capture-MS; 2 records), ALG9 (Affinity Capture-MS; 2 records), ATP2A3 (Affinity Capture-MS; 2 records), BSCL2 (Affinity Capture-MS; 2 records), CHST10 (Affinity Capture-MS; 2 records), CISD2 (Affinity Capture-MS; 2 records), CLPTM1 (Affinity Capture-MS; 2 records), CNNM1 (Affinity Capture-MS; 2 records), EIF2AK3 (Affinity Capture-MS; 2 records), FAM69A (Affinity Capture-MS; 2 records), FBXO2 (Affinity Capture-MS; 2 records), GLB1L2 (Affinity Capture-MS; 2 records), GLRB (Affinity Capture-MS; 2 records)
Disease & clinical
Genetic variants
Variant evidence for ASIC4: 14 ClinVar records (0 pathogenic / likely pathogenic); 2 GWAS associations.
ClinVar
14 variants total. Per-class counts are floors (≥ shown; pagination cap):
| Classification | Count (floor) |
|---|---|
| Pathogenic | 0 |
| Likely pathogenic | 0 |
| Uncertain significance | 3 |
| Likely benign | 3 |
| Benign | 4 |
SpliceAI
Top 10 splice-impact sites by Δscore (adjacent positions with the same effect merged into one range; 29 predictions of 1,036):
| Position(s) | Effect | Δscore | Sites |
|---|---|---|---|
| 2:219531916 | donor_gain | 1.0000 | |
| 2:219531921 | donor_gain | 1.0000 | |
| 2:219532129–219532130 | donor_loss | 1.0000 | 4 |
| 2:219535325–219535326 | donor_loss | 1.0000 | 5 |
| 2:219537158–219537159 | donor_loss | 1.0000 | 5 |
| 2:219537240–219537241 | acceptor_loss | 1.0000 | 5 |
| 2:219537597 | acceptor_gain | 1.0000 | |
| 2:219515307–219515308 | donor_loss | 0.9900 | 5 |
| 2:219531745 | acceptor_gain | 0.9900 | |
| 2:219531750 | acceptor_gain | 0.9900 |
AlphaMissense
1,659 missense substitutions predicted likely pathogenic (of 4,295 scored), across 351 residues. Top 20 hotspot residues, ranked by the number of likely-pathogenic substitutions (of those reachable by a single-nucleotide change), then by mean score:
| Residue | Likely-pathogenic substitutions | Mean am_pathogenicity | Max am_pathogenicity |
|---|---|---|---|
| M303 | 9 | 0.917 | 0.993 |
| M354 | 9 | 0.915 | 0.995 |
| M555 | 9 | 0.902 | 0.996 |
| M465 | 9 | 0.873 | 0.981 |
| D259 | 8 | 0.996 | 0.999 |
| H383 | 8 | 0.993 | 0.998 |
| F396 | 8 | 0.993 | 1.000 |
| N520 | 8 | 0.993 | 0.999 |
| H298 | 8 | 0.992 | 0.999 |
| F319 | 8 | 0.989 | 1.000 |
| N248 | 8 | 0.987 | 1.000 |
| D525 | 8 | 0.981 | 0.992 |
| F405 | 8 | 0.980 | 0.999 |
| F332 | 8 | 0.978 | 1.000 |
| F239 | 8 | 0.975 | 0.999 |
| N246 | 8 | 0.975 | 1.000 |
| D356 | 8 | 0.967 | 0.996 |
| F402 | 8 | 0.964 | 0.999 |
| D571 | 8 | 0.963 | 0.982 |
| F558 | 8 | 0.961 | 0.995 |
HPA cancer prognostics
RNA cancer specificity: Cancer enriched (Glioblastoma Multiforme)
Disease associations
OMIM: gene MIM:606715 | disease phenotypes:
GWAS associations
2 associations:
| Study | Trait | p-value |
|---|---|---|
| GCST009246_3 | Cerebrospinal fluid sTREM-2 levels | 4e-12 |
| GCST007429_46 | Lung function (FVC) | 3e-10 |
EFO canonical traits (from GWAS)
2 canonical traits:
| EFO ID | Trait name |
|---|---|
| EFO:0004312 | vital capacity |
| EFO:0010151 | soluble triggering receptor expressed on myeloid cells 2 measurement |
Drugs & pharmacology
Drug and pharmacology data
Is drug target: no
PharmGKB: 1 entry (CPIC guideline: no)
CTD chemical–gene interactions
15 total (human), top 15 by PubMed support.
| Chemical | Actions (top 5) | PubMed papers |
|---|---|---|
| Valproic Acid | affects cotreatment, increases expression, increases methylation | 2 |
| aristolochic acid I | increases expression | 1 |
| pirinixic acid | decreases expression, increases activity, affects binding | 1 |
| sodium arsenite | increases expression | 1 |
| licochalcone B | increases expression | 1 |
| jinfukang | affects cotreatment, decreases expression | 1 |
| theaflavin-3,3’-digallate | affects expression | 1 |
| Atrazine | increases expression | 1 |
| Benzo(a)pyrene | affects methylation, decreases methylation, increases methylation | 1 |
| Cisplatin | decreases expression, affects cotreatment | 1 |
| Hydralazine | increases expression, affects cotreatment | 1 |
| Tobacco Smoke Pollution | increases expression | 1 |
| Toluene | decreases expression, increases methylation | 1 |
| Tretinoin | increases expression | 1 |
| Triclosan | decreases expression | 1 |
Clinical trials (associated diseases)
Via MONDO — disease-level, not drug-specific.
Related Atlas pages
No linked Atlas pages yet — the cross-entity mesh grows as the corpus expands.