USP18 - ubiquitin specific peptidase 18 Gene
Also Known as ISG43; UBP43; PTORCH2
Species: Homo sapiens
About USP18
This gene has 4 transcripts (splice variants), 121 orthologues, 71 paralogues and is associated with 3 phenotypes. Ubiquitous expression in fat (RPKM 6.5), spleen (RPKM 6.3) and 25 other tissues.
Summary
The protein encoded by this gene belongs to the ubiquitin-specific proteases (UBP) family of Enzymes that cleave ubiquitin from ubiquitinated protein substrates. It is highly expressed in liver and thymus, and is localized to the nucleus. This protein efficiently cleaves only ISG15 (a ubiquitin-like protein) fusions, and deletion of this gene in mice results in a massive increase of ISG15 conjugates in tissues, indicating that this protein is a major ISG15-specific protease. Mice lacking this gene are also hypersensitive to interferon, suggesting a function of this protein in downregulating interferon responses, independent of its isopeptidase activity towards ISG15. [provided by RefSeq, Sep 2011]
USP18 Products (1)
| mRNA | Protein | Name |
|---|---|---|
| NM_017414.4 | NP_059110.2 | ubl carboxyl-terminal hydrolase 18 |
| Molecular Function GO Annotation | Evidence | Verweise | Source |
|---|---|---|---|
| enables ISG15-specific peptidase activity |
EXP
EXP: Inferred from Experiment
|
11788588 | GOA |
| enables molecular adaptor activity |
IDA
IDA: Inferred from direct assay
|
27801882 | GOA |
| enables protein binding |
IPI
IPI: Inferred from physical interaction
|
16189514 | GOA |
| Biological Process GO Annotation | Evidence | Verweise | Source |
|---|---|---|---|
| involved in antiviral innate immune response |
IDA
IDA: Inferred from direct assay
|
27801882 | GOA |
| involved in negative regulation of type I interferon-mediated signaling pathway |
IDA
IDA: Inferred from direct assay
|
28165510 | GOA |
| involved in regulation of inflammatory response |
IMP
IMP: Inferred from mutant phenotype
|
27325888 | GOA |
USP18 Protein Structure
UCH: Ubiquitin carboxyl-terminal hydrolase (55 - 367)
- 0
- 100
- 200
- 300
- 372 a.a.
| Protein Preferred Names | Protein Names | |
|---|---|---|
|
ubl carboxyl-terminal hydrolase 18 |
|
USP18 Protein-protein interaction Information
|
Type
|
Protein Name | Protein ID | Interactor | Interactor Species | Interactor ID | Detection Method | Verweise |
|---|---|---|---|---|---|---|---|
|
Intra
|
USP18 | Q9UMW8 | ISG15 | Homo sapiens | P05161 | 25416956 | |
|
Intra
|
USP18 | Q9UMW8 | ISG15 | Homo sapiens | P05161 | 32296183 | |
|
Intra
|
USP18 | Q9UMW8 | ISG15 | Homo sapiens | P05161 | 25307056 | |
|
Intra
|
USP18 | Q9UMW8 | ISG15 | Homo sapiens | P05161 | 32296183 | |
|
Intra
|
USP18 | Q9UMW8 | IFNAR2 | Homo sapiens | P48551 | 16710296 |
Related Diseases
| Diseases | Alias | |
|---|---|---|
| Pseudo-Torch Syndrome 2 |
|
|
| Torch Syndrome |
|
|
| Immunodeficiency 38 With Basal Ganglia Calcification |
|
|
| Immunodeficiency 44 |
|
|
| Tuberculous Salpingitis |
|
|
| Aicardi-Goutieres Syndrome |
|
|
| Acute Promyelocytic Leukemia |
|
|
| Basal Ganglia Calcification |
|
|
| Vasculopathy, Retinal, With Cerebral Leukoencephalopathy And Systemic Manifestations |
|
|
| Chilblain Lupus 1 |
|
|
| Thrombocytopenia |
|
|
Orthologs Information
| Species | Symbol | Source | ID |
|---|---|---|---|
| Rattus norvegicus | USP18 | RGD | RGD:1359153 |
| Mus musculus | USP18 | MGD | MGI:1344364 |
| Others | USP18 | NCBI |