GPN1
protein-codingGPN-loop GTPase 1, the group of GPN-loop GTPases
Gene summary
This gene encodes a guanosine triphosphatase enzyme. The encoded protein may play a role in DNA repair and may function in activation of transcription. Alternatively spliced transcript variants have been described. [provided by RefSeq, Feb 2009]
- XAB1
MANE transcript
Inheritance
ClinVar variants
Top phenotype
gnomAD constraint
Max pathogenic AF
Genomic locus
External References & Databases
Transcript & Mutation Effects
hg38 • Region Span ~23.3 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 GPN1 variants in ClinVar
ClinVar Variants & Pathogenicity by Type
Statistics based on transcript NM_007266.4. 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 | 0 | |||||
| missense | 48 | 1 | 49 | |||
| nonsense | 0 | |||||
| start loss | 0 | |||||
| frameshift | 0 | |||||
| splice donor/acceptor (+/-2bp) | 3 | 3 | ||||
| Total | 0 | 0 | 51 | 1 | 0 | 52 |
Transcript Catalog
Annotated transcript isoforms across RefSeq and Ensembl databases
| Transcript ID | Source | Protein ID | Coding Exons | MANE Status |
|---|---|---|---|---|
| RefSeq | NP_009197.3 | 14 | MANE Select | |
| Ensembl | ENSP00000476446.1 | 14 | MANE Select | |
| RefSeq | NP_001138519.1 | 15 | Standard | |
| RefSeq | NP_001138520.1 | 12 | Standard |
Gene Ontology (GO) Annotations & Pathways
Biological processes, molecular functions, cellular components and pathways
Molecular Function
- GTPase activity
- protein binding
- GTP binding
Cellular Component
- nucleoplasm
- mitochondrion
- cytosol
gnomAD Constraint
Source:
- Gene type
- protein_coding
- Transcript type
- protein_coding
- Transcript
- ENST00000264718
- Coding exons
- 14
- Length
- 23262
- Individuals with no LoFs
- 125723
- Homozygous LoFs
- 0
- Heterozygous LoFs
- 24
- Defined
- 125747
- p
- 0.0000954
| Z-Score | Observed | Expected | Observed/Expected | Mutation Rate | Total Possible | |
|---|---|---|---|---|---|---|
| Missense | 0.436 | 201 | 219 | 0.917 | 0.0000110 | 2544 |
| Missense (PolyPhen) | 50 | 68.256 | 0.73253 | 815 | ||
| Synonymous | -1.06 | 92 | 79.9 | 1.15 | 0.00000418 | 730 |
| Loss of Function | 2.44 | 11 | 23.9 | 0.461 | 0.00000114 | 285 |
Population LoF Frequency
| Population | CAF | p-value | Status |
|---|---|---|---|
| African | 0.000062 | 0.000062 | rare |
| Latino/Admixed American | 0.000087 | 0.000087 | rare |
| Ashkenazi Jewish | 0 | 0.0 | absent |
| East Asian | 0.00027 | 0.00027 | rare |
| Finnish | 0 | 0.0 | absent |
| European (Non-Finnish) | 0.000079 | 0.000079 | rare |
| South Asian | 0.00020 | 0.00020 | rare |
| Other | 0 | 0.0 | absent |
dbNSFP Gene Annotations
Source:
- Function
- FUNCTION: Small GTPase required for proper nuclear import of RNA polymerase II (RNAPII) (PubMed:20855544, PubMed:21768307). May act at an RNAP assembly step prior to nuclear import (PubMed:21768307). Forms an interface between the RNA polymerase II enzyme and chaperone/scaffolding proteins, suggesting that it is required to connect RNA polymerase II to regulators of protein complex formation (PubMed:17643375). May be involved in nuclear localization of XPA (PubMed:11058119). {ECO:0000269|PubMed:17643375, ECO:0000269|PubMed:20855544, ECO:0000269|PubMed:21768307, ECO:0000305|PubMed:11058119}.;
Recessive Scores
- pRec
- 0.0938
Intolerance Scores
- LoFtool
- 0.488
- RVIS EVS
- 0
- RVIS percentile EVS
- 53.85
Essentials
- Essential (CRISPR)
- E
- Essential (CRISPR2)
- E
- Essential (gene trap)
- E
- Indispensability pred.
- N
- Indispensability score
- 0.358
Gene Damage Prediction
| All | Recessive | Dominant | |
|---|---|---|---|
| Mendelian | Medium | Medium | Medium |
| Primary Immunodeficiency | Medium | Medium | Medium |
| Cancer | Medium | Medium | Medium |