ASIC1
protein-codingacid sensing ion channel subunit 1, the group of Acid sensing ion channel subunits
Gene summary
This gene encodes a member of the acid-sensing ion channel (ASIC) family of proteins, which are part of the degenerin/epithelial sodium channel (DEG/ENaC) superfamily. Members of the ASIC family are sensitive to amiloride and function in neurotransmission. The encoded proteins function in learning, pain transduction, touch sensation, and development of memory and fear. Alternatively spliced transcript variants have been described. [provided by RefSeq, Feb 2012]
- ACCN2
MANE transcript
Inheritance
ClinVar variants
Top phenotype
gnomAD constraint
Max pathogenic AF
Genomic locus
External References & Databases
Transcript & Mutation Effects
hg38 • Region Span ~26.1 kbGenCC Phenotypes & Disease Associations
Curated gene-disease validity assertions and inheritance patterns
No GenCC data available for this gene.
ClinVar Associated Diseases & Phenotypes
Reported disease conditions connected to ASIC1 variants in ClinVar
ClinVar Variants & Pathogenicity by Type
Statistics based on transcript NM_001095.4. Only rare variants are included.
We include only reliable ClinVar variants with their consequences to MANE Select, MANE Plus Clinical transcripts, or transcripts with TSL equal to 1. Click a count to filter the variants table below.
Slight differences between displayed counts and ClinVar may occur due to a different transcript/consequence chosen by our variant effect predictor, or because we classify Benign/Likely benign as Likely benign and Pathogenic/Likely pathogenic as Likely pathogenic.
| Effect | PathogenicP | Likely pathogenicLP | VUS | Likely benignLB | BenignB | Sum |
|---|---|---|---|---|---|---|
| synonymous | 2 | 2 | ||||
| missense | 53 | 53 | ||||
| nonsense | 0 | |||||
| start loss | 0 | |||||
| frameshift | 0 | |||||
| splice donor/acceptor (+/-2bp) | 1 | 1 | ||||
| Total | 0 | 0 | 54 | 0 | 2 | 56 |
Transcript Catalog
Annotated transcript isoforms across RefSeq and Ensembl databases
| Transcript ID | Source | Protein ID | Coding Exons | MANE Status |
|---|---|---|---|---|
| RefSeq | NP_001086.2 | 11 | MANE Select | |
| Ensembl | ENSP00000400228.3 | 11 | MANE Select | |
| RefSeq | NP_001243759.1 | 10 | Standard | |
| RefSeq | NP_001399685.1 | 12 | Standard |
Gene Ontology (GO) Annotations & Pathways
Biological processes, molecular functions, cellular components and pathways
Pathways ConsensusPathDB
- Inflammatory mediator regulation of TRP channels - Homo sapiens (human)
- Stimuli-sensing channels
- Ion channel transport
- Transport of small molecules
Biological Process
- behavioral fear response
- response to amphetamine
- sodium ion transport
- signal transduction
- memory
Molecular Function
- protein binding
- ligand-gated sodium channel activity
- acid-sensing ion channel activity
Cellular Component
- Golgi apparatus
- plasma membrane
- integral component of plasma membrane
- cell surface
- synapse
gnomAD Constraint
Source:
- Gene type
- protein_coding
- Transcript type
- protein_coding
- Transcript
- ENST00000228468
- Coding exons
- 11
- Length
- 26064
- Individuals with no LoFs
- 125730
- Homozygous LoFs
- 0
- Heterozygous LoFs
- 12
- Defined
- 125742
- p
- 0.0000477
| Z-Score | Observed | Expected | Observed/Expected | Mutation Rate | Total Possible | |
|---|---|---|---|---|---|---|
| Missense | 2.82 | 207 | 357 | 0.580 | 0.0000216 | 3760 |
| Missense (PolyPhen) | 41 | 106.02 | 0.38672 | 1102 | ||
| Synonymous | 0.579 | 140 | 149 | 0.940 | 0.00000979 | 1098 |
| Loss of Function | 4.28 | 5 | 30.5 | 0.164 | 0.00000173 | 316 |
Population LoF Frequency
| Population | CAF | p-value | Status |
|---|---|---|---|
| African | 0 | 0.0 | absent |
| Latino/Admixed American | 0 | 0.0 | absent |
| Ashkenazi Jewish | 0 | 0.0 | absent |
| East Asian | 0 | 0.0 | absent |
| Finnish | 0.00023 | 0.00023 | rare |
| European (Non-Finnish) | 0.000053 | 0.000053 | rare |
| South Asian | 0.000033 | 0.000033 | rare |
| Other | 0 | 0.0 | absent |
dbNSFP Gene Annotations
Source:
- Function
- FUNCTION: Isoform 2 and isoform 3 function as proton-gated sodium channels; they are activated by a drop of the extracellular pH and then become rapidly desensitized. The channel generates a biphasic current with a fast inactivating and a slow sustained phase. Has high selectivity for sodium ions and can also transport lithium ions with high efficiency. Isoform 2 can also transport potassium, but with lower efficiency. It is nearly impermeable to the larger rubidium and cesium ions. Isoform 3 can also transport calcium ions. Mediates glutamate-independent Ca(2+) entry into neurons upon acidosis. This Ca(2+) overloading is toxic for cortical neurons and may be in part responsible for ischemic brain injury. Heteromeric channel assembly seems to modulate channel properties. Functions as a postsynaptic proton receptor that influences intracellular Ca(2+) concentration and calmodulin-dependent protein kinase II phosphorylation and thereby the density of dendritic spines. Modulates activity in the circuits underlying innate fear. {ECO:0000269|PubMed:22760635}.;
Recessive Scores
- pRec
- 0.175
Intolerance Scores
- RVIS EVS
- -0.49
- RVIS percentile EVS
- 22.36
Essentials
- Essential (CRISPR)
- N
- Essential (CRISPR2)
- N
- Essential (gene trap)
- N
- Indispensability pred.
- N
- Indispensability score
- 0.114
Gene Damage Prediction
| All | Recessive | Dominant | |
|---|---|---|---|
| Mendelian | Medium | Medium | Medium |
| Primary Immunodeficiency | Medium | Medium | Medium |
| Cancer | Medium | Medium | Medium |