CLNS1A
protein-codingchloride nucleotide-sensitive channel 1A
Gene summary
This gene encodes a protein that functions in multiple regulatory pathways. The encoded protein complexes with numerous cytosolic proteins and performs diverse functions including regulation of small nuclear ribonucleoprotein biosynthesis, platelet activation and cytoskeletal organization. The protein is also found associated with the plasma membrane where it functions as a chloride current regulator. Pseudogenes of this gene are found on chromosomes 1, 4 and 6. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2015]
- CLCI
MANE transcript
Inheritance
ClinVar variants
Top phenotype
gnomAD constraint
Max pathogenic AF
Genomic locus
External References & Databases
Transcript & Mutation Effects
hg38 • Region Span ~122.9 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 CLNS1A variants in ClinVar
ClinVar Variants & Pathogenicity by Type
Statistics based on transcript NM_001293.3. 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 | 0 | |||||
| missense | 29 | 1 | 30 | |||
| nonsense | 0 | |||||
| start loss | 0 | |||||
| frameshift | 0 | |||||
| splice donor/acceptor (+/-2bp) | 1 | 1 | ||||
| Total | 0 | 0 | 30 | 1 | 0 | 31 |
Transcript Catalog
Annotated transcript isoforms across RefSeq and Ensembl databases
| Transcript ID | Source | Protein ID | Coding Exons | MANE Status |
|---|---|---|---|---|
| RefSeq | NP_001284.1 | 6 | MANE Select | |
| Ensembl | ENSP00000433919.1 | 6 | MANE Select | |
| RefSeq | NP_001298128.1 | 6 | Standard | |
| RefSeq | NP_001298129.1 | 5 | Standard |
Model Organisms & Knockout Phenotypes
Observed phenotypic effects in mouse and zebrafish models
| Gene / Model | Organism | Observed Phenotype |
|---|---|---|
| clns1a | Danio rerio | Structure: motor neuron Quality: branchiness abnormal |
Gene Ontology (GO) Annotations & Pathways
Biological processes, molecular functions, cellular components and pathways
Pathways ConsensusPathDB
- RNA transport - Homo sapiens (human)
- snRNP Assembly
- Metabolism of RNA
- Metabolism of non-coding RNA
Biological Process
- spliceosomal snRNP assembly
- chloride transport
- cell volume homeostasis
Molecular Function
- RNA binding
- protein binding
- protein heterodimerization activity
Cellular Component
- nucleus
- nucleoplasm
- cytosol
- cytoskeleton
- plasma membrane
gnomAD Constraint
Source:
- Gene type
- protein_coding
- Transcript type
- protein_coding
- Transcript
- ENST00000525428
- Coding exons
- 6
- Length
- 122870
- Individuals with no LoFs
- 125711
- Homozygous LoFs
- 0
- Heterozygous LoFs
- 35
- Defined
- 125746
- p
- 0.000139
| Z-Score | Observed | Expected | Observed/Expected | Mutation Rate | Total Possible | |
|---|---|---|---|---|---|---|
| Missense | 0.882 | 96 | 124 | 0.777 | 0.00000573 | 1547 |
| Missense (PolyPhen) | 14 | 25.601 | 0.54685 | 346 | ||
| Synonymous | 0.717 | 40 | 46.2 | 0.866 | 0.00000220 | 436 |
| Loss of Function | 2.27 | 4 | 12.7 | 0.314 | 6.23e-7 | 164 |
Population LoF Frequency
| Population | CAF | p-value | Status |
|---|---|---|---|
| African | 0.00012 | 0.00012 | rare |
| Latino/Admixed American | 0.00018 | 0.00017 | rare |
| Ashkenazi Jewish | 0 | 0.0 | absent |
| East Asian | 0.00022 | 0.00022 | rare |
| Finnish | 0.00021 | 0.00018 | rare |
| European (Non-Finnish) | 0.00017 | 0.00017 | rare |
| South Asian | 0 | 0.0 | absent |
| Other | 0 | 0.0 | absent |
dbNSFP Gene Annotations
Source:
- Function
- FUNCTION: Involved in both the assembly of spliceosomal snRNPs and the methylation of Sm proteins (PubMed:21081503, PubMed:18984161). Chaperone that regulates the assembly of spliceosomal U1, U2, U4 and U5 small nuclear ribonucleoproteins (snRNPs), the building blocks of the spliceosome. Thereby, plays an important role in the splicing of cellular pre-mRNAs. Most spliceosomal snRNPs contain a common set of Sm proteins SNRPB, SNRPD1, SNRPD2, SNRPD3, SNRPE, SNRPF and SNRPG that assemble in a heptameric protein ring on the Sm site of the small nuclear RNA to form the core snRNP. In the cytosol, the Sm proteins SNRPD1, SNRPD2, SNRPE, SNRPF and SNRPG are trapped in an inactive 6S pICln-Sm complex by the chaperone CLNS1A that controls the assembly of the core snRNP. Dissociation by the SMN complex of CLNS1A from the trapped Sm proteins and their transfer to an SMN-Sm complex triggers the assembly of core snRNPs and their transport to the nucleus. May also indirectly participate in cellular volume control by activation of a swelling-induced chloride conductance pathway. {ECO:0000269|PubMed:10330151, ECO:0000269|PubMed:11713266, ECO:0000269|PubMed:18984161, ECO:0000269|PubMed:21081503}.;
Recessive Scores
- pRec
- 0.203
Intolerance Scores
- LoFtool
- 0.609
- RVIS EVS
- -0.23
- RVIS percentile EVS
- 36.86
Essentials
- Essential (CRISPR)
- N
- Essential (CRISPR2)
- E
- Essential (gene trap)
- E
- Indispensability pred.
- E
- Indispensability score
- 0.925
Gene Damage Prediction
| All | Recessive | Dominant | |
|---|---|---|---|
| Mendelian | Medium | Medium | Medium |
| Primary Immunodeficiency | Medium | Medium | Medium |
| Cancer | Medium | Medium | Medium |