SYMPK
protein-codingsymplekin scaffold protein, the group of Armadillo like helical domain containing
Gene summary
This gene encodes a nuclear protein that functions in the regulation of polyadenylation and promotes gene expression. The protein forms a high-molecular weight complex with components of the polyadenylation machinery. It is thought to serve as a scaffold for recruiting regulatory factors to the polyadenylation complex. It also participates in 3'-end maturation of histone mRNAs, which do not undergo polyadenylation. The protein also localizes to the cytoplasmic plaques of tight junctions in some cell types. [provided by RefSeq, Jul 2008]
MANE transcript
Inheritance
ClinVar variants
Top phenotype
gnomAD constraint
Max pathogenic AF
Genomic locus
External References & Databases
Transcript & Mutation Effects
hg38 • Region Span ~47.8 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 SYMPK variants in ClinVar
ClinVar Variants & Pathogenicity by Type
Statistics based on transcript NM_004819.3. 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 | 2 | 3 | 5 | |||
| missense | 149 | 3 | 1 | 153 | ||
| nonsense | 4 | 4 | ||||
| start loss | 0 | |||||
| frameshift | 0 | |||||
| splice donor/acceptor (+/-2bp) | 10 | 10 | ||||
| Total | 0 | 0 | 165 | 6 | 1 | 172 |
Transcript Catalog
Annotated transcript isoforms across RefSeq and Ensembl databases
| Transcript ID | Source | Protein ID | Coding Exons | MANE Status |
|---|---|---|---|---|
| RefSeq | NP_004810.2 | 26 | MANE Select | |
| Ensembl | ENSP00000245934.7 | 26 | MANE Select | |
| Ensembl | ENSP00000471770.1 | 5 | Standard | |
| Ensembl | ENSP00000470957.1 | 3 | Standard |
Gene Ontology (GO) Annotations & Pathways
Biological processes, molecular functions, cellular components and pathways
Pathways ConsensusPathDB
- Tight junction - Homo sapiens (human)
- mRNA surveillance pathway - Homo sapiens (human)
- Gene expression (Transcription)
- RNA Polymerase II Transcription
- Metabolism of RNA
Biological Process
- mRNA splicing, via spliceosome
- termination of RNA polymerase II transcription
- mRNA polyadenylation
- mRNA export from nucleus
- cell adhesion
Molecular Function
- protein binding
Cellular Component
- nucleoplasm
- cytoplasm
- cytosol
- cytoskeleton
- plasma membrane
gnomAD Constraint
Source:
- Gene type
- protein_coding
- Transcript type
- protein_coding
- Transcript
- ENST00000245934
- Coding exons
- 26
- Length
- 47881
- Individuals with no LoFs
- 125734
- Homozygous LoFs
- 0
- Heterozygous LoFs
- 14
- Defined
- 125748
- p
- 0.0000557
| Z-Score | Observed | Expected | Observed/Expected | Mutation Rate | Total Possible | |
|---|---|---|---|---|---|---|
| Missense | 2.86 | 543 | 765 | 0.710 | 0.0000474 | 8147 |
| Missense (PolyPhen) | 87 | 218.27 | 0.3986 | 2298 | ||
| Synonymous | -1.09 | 355 | 330 | 1.08 | 0.0000212 | 2622 |
| Loss of Function | 6.50 | 5 | 58.8 | 0.0851 | 0.00000301 | 679 |
Population LoF Frequency
| Population | CAF | p-value | Status |
|---|---|---|---|
| African | 0.000062 | 0.000062 | rare |
| Latino/Admixed American | 0.000058 | 0.000058 | rare |
| Ashkenazi Jewish | 0.00020 | 0.00020 | rare |
| East Asian | 0 | 0.0 | absent |
| Finnish | 0 | 0.0 | absent |
| European (Non-Finnish) | 0.000054 | 0.000053 | rare |
| South Asian | 0.00010 | 0.000098 | rare |
| Other | 0 | 0.0 | absent |
dbNSFP Gene Annotations
Source:
- Function
- FUNCTION: Scaffold protein that functions as a component of a multimolecular complex involved in histone mRNA 3'-end processing. Specific component of the tight junction (TJ) plaque, but might not be an exclusively junctional component. May have a house- keeping rule. Is involved in pre-mRNA polyadenylation. Enhances SSU72 phosphatase activity. {ECO:0000269|PubMed:16230528, ECO:0000269|PubMed:20861839}.;
Intolerance Scores
- LoFtool
- 0.0885
- RVIS EVS
- -1.48
- RVIS percentile EVS
- 3.69
Essentials
- Essential (CRISPR)
- E
- Essential (CRISPR2)
- E
- Essential (gene trap)
- E
- Indispensability pred.
- E
- Indispensability score
- 0.926
Gene Damage Prediction
| All | Recessive | Dominant | |
|---|---|---|---|
| Mendelian | Medium | Medium | Medium |
| Primary Immunodeficiency | Medium | Medium | Medium |
| Cancer | Medium | Medium | Medium |