PSME3
protein-codingproteasome activator subunit 3, the group of Proteasome
Gene summary
The 26S proteasome is a multicatalytic proteinase complex with a highly ordered structure composed of 2 complexes, a 20S core and a 19S regulator. The 20S core is composed of 4 rings of 28 non-identical subunits; 2 rings are composed of 7 alpha subunits and 2 rings are composed of 7 beta subunits. The 19S regulator is composed of a base, which contains 6 ATPase subunits and 2 non-ATPase subunits, and a lid, which contains up to 10 non-ATPase subunits. Proteasomes are distributed throughout eukaryotic cells at a high concentration and cleave peptides in an ATP/ubiquitin-dependent process in a non-lysosomal pathway. An essential function of a modified proteasome, the immunoproteasome, is the processing of class I MHC peptides. The immunoproteasome contains an alternate regulator, referred to as the 11S regulator or PA28, that replaces the 19S regulator. Three subunits (alpha, beta and gamma) of the 11S regulator have been identified. This gene encodes the gamma subunit of the 11S regulator. Six gamma subunits combine to form a homohexameric ring. Alternate splicing results in multiple transcript variants. [provided by RefSeq, May 2012]
MANE transcript
Inheritance
ClinVar variants
Top phenotype
gnomAD constraint
Max pathogenic AF
Genomic locus
External References & Databases
Transcript & Mutation Effects
hg38 • Region Span ~19.4 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 PSME3 variants in ClinVar
ClinVar Variants & Pathogenicity by Type
Statistics based on transcript NM_005789.4. 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 | 1 | 1 | ||||
| missense | 11 | 11 | ||||
| nonsense | 1 | 1 | ||||
| start loss | 0 | |||||
| frameshift | 0 | |||||
| splice donor/acceptor (+/-2bp) | 6 | 6 | ||||
| Total | 0 | 0 | 19 | 0 | 0 | 19 |
Transcript Catalog
Annotated transcript isoforms across RefSeq and Ensembl databases
| Transcript ID | Source | Protein ID | Coding Exons | MANE Status |
|---|---|---|---|---|
| RefSeq | NP_005780.2 | 11 | MANE Select | |
| Ensembl | ENSP00000466794.1 | 11 | MANE Select | |
| RefSeq | NP_001253974.1 | 11 | Standard | |
| RefSeq | NP_001317158.1 | 8 | Standard |
Gene Ontology (GO) Annotations & Pathways
Biological processes, molecular functions, cellular components and pathways
Pathways ConsensusPathDB
- Antigen processing and presentation - Homo sapiens (human)
- Hepatitis C - Homo sapiens (human)
- Proteasome - Homo sapiens (human)
- Proteasome Degradation
- Post-translational protein modification
Biological Process
- apoptotic process
- cell cycle
- positive regulation of endopeptidase activity
- protein deubiquitination
- post-translational protein modification
Molecular Function
- p53 binding
- protein binding
- identical protein binding
- endopeptidase activator activity
- MDM2/MDM4 family protein binding
Cellular Component
- proteasome complex
- nucleus
- nucleoplasm
- cytoplasm
- cytosol
gnomAD Constraint
Source:
- Gene type
- protein_coding
- Transcript type
- protein_coding
- Transcript
- ENST00000293362
- Coding exons
- 11
- Length
- 19373
- Individuals with no LoFs
- 125735
- Homozygous LoFs
- 0
- Heterozygous LoFs
- 2
- Defined
- 125737
- p
- 0.00000795
| Z-Score | Observed | Expected | Observed/Expected | Mutation Rate | Total Possible | |
|---|---|---|---|---|---|---|
| Missense | 2.39 | 66 | 148 | 0.447 | 0.00000768 | 1768 |
| Missense (PolyPhen) | 12 | 48.296 | 0.24847 | 568 | ||
| Synonymous | 0.492 | 46 | 50.4 | 0.912 | 0.00000235 | 480 |
| Loss of Function | 3.84 | 0 | 17.2 | 0.00 | 8.07e-7 | 218 |
Population LoF Frequency
| Population | CAF | p-value | Status |
|---|---|---|---|
| African | 0 | 0.0 | absent |
| Latino/Admixed American | 0.000029 | 0.000029 | rare |
| Ashkenazi Jewish | 0 | 0.0 | absent |
| East Asian | 0 | 0.0 | absent |
| Finnish | 0 | 0.0 | absent |
| European (Non-Finnish) | 0.0000088 | 0.0000088 | rare |
| South Asian | 0 | 0.0 | absent |
| Other | 0 | 0.0 | absent |
dbNSFP Gene Annotations
Source:
- Function
- FUNCTION: Subunit of the 11S REG-gamma (also called PA28-gamma) proteasome regulator, a doughnut-shaped homoheptamer which associates with the proteasome. 11S REG-gamma activates the trypsin-like catalytic subunit of the proteasome but inhibits the chymotrypsin-like and postglutamyl-preferring (PGPH) subunits. Facilitates the MDM2-p53/TP53 interaction which promotes ubiquitination- and MDM2-dependent proteasomal degradation of p53/TP53, limiting its accumulation and resulting in inhibited apoptosis after DNA damage. May also be involved in cell cycle regulation. Mediates CCAR2 and CHEK2-dependent SIRT1 inhibition (PubMed:25361978). {ECO:0000269|PubMed:10835274, ECO:0000269|PubMed:11185562, ECO:0000269|PubMed:11432824, ECO:0000269|PubMed:15111123, ECO:0000269|PubMed:18309296, ECO:0000269|PubMed:25361978, ECO:0000269|PubMed:9325261}.;
Recessive Scores
- pRec
- 0.244
Intolerance Scores
- LoFtool
- 0.438
- RVIS EVS
- -0.05
- RVIS percentile EVS
- 49.39
Essentials
- Essential (CRISPR)
- E
- Essential (CRISPR2)
- S
- Essential (gene trap)
- N
- Indispensability pred.
- E
- Indispensability score
- 0.925
Gene Damage Prediction
| All | Recessive | Dominant | |
|---|---|---|---|
| Mendelian | Low | Low | Low |
| Primary Immunodeficiency | Medium | Low | Medium |
| Cancer | Low | Low | Low |