CHMP2A
protein-codingcharged multivesicular body protein 2A, the group of Charged multivesicular body proteins|ESCRT-III
Gene summary
CHMP2A belongs to the chromatin-modifying protein/charged multivesicular body protein (CHMP) family. These proteins are components of ESCRT-III (endosomal sorting complex required for transport III), a complex involved in degradation of surface receptor proteins and formation of endocytic multivesicular bodies (MVBs). Some CHMPs have both nuclear and cytoplasmic/vesicular distributions, and one such CHMP, CHMP1A (MIM 164010), is required for both MVB formation and regulation of cell cycle progression (Tsang et al., 2006 [PubMed 16730941]).[supplied by OMIM, Mar 2008]
MANE transcript
Inheritance
ClinVar variants
Top phenotype
gnomAD constraint
Max pathogenic AF
Genomic locus
External References & Databases
Transcript & Mutation Effects
hg38 • Region Span ~3.7 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 CHMP2A variants in ClinVar
ClinVar Variants & Pathogenicity by Type
Statistics based on transcript NM_014453.4. 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 | 22 | 22 | ||||
| nonsense | 0 | |||||
| start loss | 0 | |||||
| frameshift | 0 | |||||
| splice donor/acceptor (+/-2bp) | 4 | 4 | ||||
| Total | 0 | 0 | 26 | 0 | 0 | 26 |
Transcript Catalog
Annotated transcript isoforms across RefSeq and Ensembl databases
| Transcript ID | Source | Protein ID | Coding Exons | MANE Status |
|---|---|---|---|---|
| RefSeq | NP_055268.1 | 5 | MANE Select | |
| Ensembl | ENSP00000310440.1 | 5 | MANE Select | |
| RefSeq | NP_940818.1 | 5 | Standard | |
| Ensembl | ENSP00000471961.2 | 5 | Standard |
Model Organisms & Knockout Phenotypes
Observed phenotypic effects in mouse and zebrafish models
| Gene / Model | Organism | Observed Phenotype |
|---|---|---|
| chmp2a | Danio rerio | Structure: trunk Quality: necrotic abnormal |
Gene Ontology (GO) Annotations & Pathways
Biological processes, molecular functions, cellular components and pathways
Pathways ConsensusPathDB
- Endocytosis - Homo sapiens (human)
- Necroptosis - Homo sapiens (human)
- miR-targeted genes in epithelium - TarBase
- miR-targeted genes in lymphocytes - TarBase
- miR-targeted genes in muscle cell - TarBase
Biological Process
- nucleus organization
- mitotic metaphase plate congression
- membrane invagination
- exit from mitosis
- regulation of centrosome duplication
Molecular Function
- protein binding
- protein domain specific binding
- phosphatidylcholine binding
Cellular Component
- chromatin
- ESCRT III complex
- nuclear envelope
- multivesicular body
- cytosol
gnomAD Constraint
Source:
- Gene type
- protein_coding
- Transcript type
- protein_coding
- Transcript
- ENST00000600118
- Coding exons
- 5
- Length
- 3559
- Individuals with no LoFs
- 125738
- Homozygous LoFs
- 0
- Heterozygous LoFs
- 10
- Defined
- 125748
- p
- 0.0000398
| Z-Score | Observed | Expected | Observed/Expected | Mutation Rate | Total Possible | |
|---|---|---|---|---|---|---|
| Missense | 0.898 | 110 | 140 | 0.786 | 0.00000879 | 1466 |
| Missense (PolyPhen) | 35 | 43.762 | 0.79978 | 436 | ||
| Synonymous | -2.31 | 71 | 50.2 | 1.41 | 0.00000262 | 431 |
| Loss of Function | 1.99 | 3 | 9.69 | 0.309 | 5.05e-7 | 112 |
Population LoF Frequency
| Population | CAF | p-value | Status |
|---|---|---|---|
| African | 0 | 0.0 | absent |
| Latino/Admixed American | 0.000029 | 0.000029 | rare |
| Ashkenazi Jewish | 0.000099 | 0.000099 | rare |
| East Asian | 0.000054 | 0.000054 | rare |
| Finnish | 0 | 0.0 | absent |
| European (Non-Finnish) | 0.000062 | 0.000062 | rare |
| South Asian | 0 | 0.0 | absent |
| Other | 0 | 0.0 | absent |
dbNSFP Gene Annotations
Source:
- Function
- FUNCTION: Probable core component of the endosomal sorting required for transport complex III (ESCRT-III) which is involved in multivesicular bodies (MVBs) formation and sorting of endosomal cargo proteins into MVBs. MVBs contain intraluminal vesicles (ILVs) that are generated by invagination and scission from the limiting membrane of the endosome and mostly are delivered to lysosomes enabling degradation of membrane proteins, such as stimulated growth factor receptors, lysosomal enzymes and lipids. The MVB pathway appears to require the sequential function of ESCRT-O, -I,-II and -III complexes. ESCRT-III proteins mostly dissociate from the invaginating membrane before the ILV is released. The ESCRT machinery also functions in topologically equivalent membrane fission events, such as the terminal stages of cytokinesis (PubMed:21310966). Together with SPAST, the ESCRT-III complex promotes nuclear envelope sealing and mitotic spindle disassembly during late anaphase (PubMed:26040712). ESCRT-III proteins are believed to mediate the necessary vesicle extrusion and/or membrane fission activities, possibly in conjunction with the AAA ATPase VPS4. {ECO:0000269|PubMed:21310966, ECO:0000269|PubMed:26040712, ECO:0000305}.;
Recessive Scores
- pRec
- 0.130
Intolerance Scores
- LoFtool
- 0.376
- RVIS EVS
- -0.21
- RVIS percentile EVS
- 38.28
Essentials
- Essential (CRISPR)
- E
- Essential (CRISPR2)
- E
- Essential (gene trap)
- E
- Indispensability pred.
- E
- Indispensability score
- 0.965