HSP90AA1
protein-codingheat shock protein 90 alpha family class A member 1, the group of Heat shock 90kDa proteins
Gene summary
The protein encoded by this gene is an inducible molecular chaperone that functions as a homodimer. The encoded protein aids in the proper folding of specific target proteins by use of an ATPase activity that is modulated by co-chaperones. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jan 2012]
- HSPC1
- HSPCA
MANE transcript
Inheritance
ClinVar variants
Top phenotype
gnomAD constraint
Max pathogenic AF
Genomic locus
External References & Databases
Transcript & Mutation Effects
hg38 • Region Span ~59.0 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 HSP90AA1 variants in ClinVar
ClinVar Variants & Pathogenicity by Type
Statistics based on transcript NM_005348.4. 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 | 2 | 1 | 3 | |||
| missense | 60 | 60 | ||||
| nonsense | 1 | 1 | ||||
| start loss | 0 | |||||
| frameshift | 0 | |||||
| splice donor/acceptor (+/-2bp) | 5 | 5 | ||||
| Total | 0 | 0 | 66 | 2 | 1 | 69 |
Transcript Catalog
Annotated transcript isoforms across RefSeq and Ensembl databases
| Transcript ID | Source | Protein ID | Coding Exons | MANE Status |
|---|---|---|---|---|
| RefSeq | NP_005339.3 | 10 | MANE Select | |
| Ensembl | ENSP00000216281.8 | 10 | MANE Select | |
| RefSeq | NP_001017963.2 | 12 | Standard | |
| Ensembl | ENSP00000335153.7 | 12 | Standard |
Model Organisms & Knockout Phenotypes
Observed phenotypic effects in mouse and zebrafish models
| Gene / Model | Organism | Observed Phenotype |
|---|---|---|
| hsp90aa1.1 | Danio rerio | Structure: fast muscle cell Quality: disorganized abnormal |
Gene Ontology (GO) Annotations & Pathways
Biological processes, molecular functions, cellular components and pathways
Pathways ConsensusPathDB
- PI3K-Akt signaling pathway - Homo sapiens (human)
- Antigen processing and presentation - Homo sapiens (human)
- Protein processing in endoplasmic reticulum - Homo sapiens (human)
- Prostate cancer - Homo sapiens (human)
- Necroptosis - Homo sapiens (human)
Biological Process
- G2/M transition of mitotic cell cycle
- positive regulation of protein phosphorylation
- mitochondrial transport
- receptor-mediated endocytosis
- response to unfolded protein
Molecular Function
- nucleotide binding
- RNA binding
- protein tyrosine kinase activity
- protein binding
- ATP binding
Cellular Component
- extracellular region
- nucleus
- nucleoplasm
- cytoplasm
- cytosol
gnomAD Constraint
Source:
- Gene type
- protein_coding
- Transcript type
- protein_coding
- Transcript
- ENST00000334701
- Coding exons
- 12
- Length
- 58962
- Individuals with no LoFs
- 125715
- Homozygous LoFs
- 0
- Heterozygous LoFs
- 33
- Defined
- 125748
- p
- 0.000131
| Z-Score | Observed | Expected | Observed/Expected | Mutation Rate | Total Possible | |
|---|---|---|---|---|---|---|
| Missense | 1.04 | 384 | 446 | 0.862 | 0.0000230 | 5668 |
| Missense (PolyPhen) | 42 | 76.86 | 0.54645 | 1039 | ||
| Synonymous | -8.62 | 303 | 163 | 1.86 | 0.00000881 | 1544 |
| Loss of Function | 4.60 | 7 | 37.3 | 0.188 | 0.00000194 | 503 |
Population LoF Frequency
| Population | CAF | p-value | Status |
|---|---|---|---|
| African | 0.00018 | 0.00018 | rare |
| Latino/Admixed American | 0.00012 | 0.00012 | rare |
| Ashkenazi Jewish | 0.00030 | 0.00030 | rare |
| East Asian | 0.00022 | 0.00022 | rare |
| Finnish | 0.000092 | 0.000092 | rare |
| European (Non-Finnish) | 0.00013 | 0.00013 | rare |
| South Asian | 0.000033 | 0.000033 | rare |
| Other | 0.00016 | 0.00016 | rare |
dbNSFP Gene Annotations
Source:
- Function
- FUNCTION: Molecular chaperone that promotes the maturation, structural maintenance and proper regulation of specific target proteins involved for instance in cell cycle control and signal transduction. Undergoes a functional cycle that is linked to its ATPase activity which is essential for its chaperone activity. This cycle probably induces conformational changes in the client proteins, thereby causing their activation. Interacts dynamically with various co-chaperones that modulate its substrate recognition, ATPase cycle and chaperone function (PubMed:11274138, PubMed:15577939, PubMed:15937123, PubMed:27353360, PubMed:29127155). Engages with a range of client protein classes via its interaction with various co-chaperone proteins or complexes, that act as adapters, simultaneously able to interact with the specific client and the central chaperone itself (PubMed:29127155). Recruitment of ATP and co-chaperone followed by client protein forms a functional chaperone. After the completion of the chaperoning process, properly folded client protein and co- chaperone leave HSP90 in an ADP-bound partially open conformation and finally, ADP is released from HSP90 which acquires an open conformation for the next cycle (PubMed:27295069, PubMed:26991466). Apart from its chaperone activity, it also plays a role in the regulation of the transcription machinery. HSP90 and its co-chaperones modulate transcription at least at three different levels (PubMed:25973397). In the first place, they alter the steady-state levels of certain transcription factors in response to various physiological cues(PubMed:25973397). Second, they modulate the activity of certain epigenetic modifiers, such as histone deacetylases or DNA methyl transferases, and thereby respond to the change in the environment (PubMed:25973397). Third, they participate in the eviction of histones from the promoter region of certain genes and thereby turn on gene expression (PubMed:25973397). Binds bacterial lipopolysaccharide (LPS) and mediates LPS-induced inflammatory response, including TNF secretion by monocytes (PubMed:11276205). Antagonizes STUB1- mediated inhibition of TGF-beta signaling via inhibition of STUB1- mediated SMAD3 ubiquitination and degradation (PubMed:24613385). {ECO:0000269|PubMed:11274138, ECO:0000269|PubMed:11276205, ECO:0000269|PubMed:15577939, ECO:0000269|PubMed:15937123, ECO:0000269|PubMed:24613385, ECO:0000269|PubMed:27353360, ECO:0000269|PubMed:29127155, ECO:0000303|PubMed:25973397, ECO:0000303|PubMed:26991466, ECO:0000303|PubMed:27295069}.;
Intolerance Scores
- LoFtool
- 0.567
- RVIS EVS
- -1.02
- RVIS percentile EVS
- 8.14
Essentials
- Essential (CRISPR)
- N
- Essential (CRISPR2)
- S
- Essential (gene trap)
- N
- Indispensability pred.
- E
- Indispensability score
- 0.890
Gene Damage Prediction
| All | Recessive | Dominant | |
|---|---|---|---|
| Mendelian | Medium | Medium | Medium |
| Primary Immunodeficiency | Medium | Medium | Medium |
| Cancer | Medium | Medium | Medium |