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CHMP4A
HPA
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  • CHMP4A
PROTEIN SUMMARY GENE INFORMATION RNA DATA ANTIBODY DATA
GENERAL INFORMATIONi

General description of the gene and the encoded protein(s) using information from HGNC and Ensembl, as well as predictions made by the Human Protein Atlas project.

Gene namei

Official gene symbol, which is typically a short form of the gene name, according to HGNC.

CHMP4A
Synonyms C14orf123, HSPC134, VPS32A
Gene descriptioni

Full gene name according to HGNC.

Charged multivesicular body protein 4A
Predicted locationi

All transcripts of all genes have been analyzed regarding the location(s) of corresponding protein based on prediction methods for signal peptides and transmembrane regions.

  • Genes with at least one transcript predicted to encode a secreted protein, according to prediction methods or to UniProt location data, have been further annotated and classified with the aim to determine if the corresponding protein(s) are secreted or actually retained in intracellular locations or membrane-attached.

  • Remaining genes, with no transcript predicted to encode a secreted protein, will be assigned the prediction-based location(s).

The annotated location overrules the predicted location, so that a gene encoding a predicted secreted protein that has been annotated as intracellular will have intracellular as the final location.

Intracellular
Protein evidence Evidence at protein level (all genes)
GENE INFORMATIONi

Gene information from Ensembl and Entrez, as well as links to available gene identifiers are displayed here. Information was retrieved from Ensembl if not indicated otherwise.

Chromosome 14
Cytoband q12
Chromosome location (bp) 24209615 - 24213830
Number of transcriptsi

Number of protein-coding transcripts from the gene as defined by Ensembl.

3
Ensembl ENSG00000254505 (version 109)
Entrez gene 29082
HGNC HGNC:20274
UniProt Q9BY43 (UniProt - Evidence at protein level)
neXtProt NX_Q9BY43
GeneCards CHMP4A
Antibodypedia CHMP4A antibodies


PROTEIN FUNCTION
Protein function (UniProt)i

Useful information about the protein provided by UniProt.

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 and the budding of enveloped viruses (HIV-1 and other lentiviruses). ESCRT-III proteins are believed to mediate the necessary vesicle extrusion and/or membrane fission activities, possibly in conjunction with the AAA ATPase VPS4. When overexpressed, membrane-assembled circular arrays of CHMP4A filaments can promote or stabilize negative curvature and outward budding. Via its interaction with PDCD6IP involved in HIV-1 p6- and p9-dependent virus release. CHMP4A/B/C are required for the exosomal release of SDCBP, CD63 and syndecan 1.... show less
Biological process (UniProt)i

Keywords assigned by UniProt to proteins because they are involved in a particular biological process.

Protein transport, Transport
Ligand (UniProt)i

Keywords assigned by UniProt to proteins because they bind, are associated with, or whose activity is dependent of some molecule.

Lipid-binding
Gene summary (Entrez)i

Useful information about the gene from Entrez

CHMP4A 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).[supplied by OMIM, Mar 2008]... show less
PROTEIN INFORMATIONi

The protein information section displays alternative protein-coding transcripts (splice variants) encoded by this gene according to the Ensembl database.

The Splice variant identifier links to the Ensembl website protein summary for the selected splice variant. The data in the Swissprot and TrEMBL columns links to corresponding pages in the UniProt database.

The protein classes assigned to this protein are shown if expanding the data in the protein class column. Parent protein classes are in bold font and subclasses are listed under the parent class.

The length of the protein (amino acid residues according to Ensembl), molecular mass (kDalton), predicted signal peptide and number of predicted transmembrane region(s) according to in-house majority decision methods based on sets of predictors are also reported.
Splice variant SwissProt TrEMBL Protein class Gene ontology Length & mass Signal peptide
(predicted)
Transmembrane regions
(predicted)
CHMP4A-201
ENSP00000324205
ENST00000347519
Q9BY43
[Direct mapping] Charged multivesicular body protein 4a
Show all
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Mapped to neXtProt
   neXtProt - Evidence at protein level
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0000421 [autophagosome membrane]
GO:0000776 [kinetochore]
GO:0000815 [ESCRT III complex]
GO:0001778 [plasma membrane repair]
GO:0005515 [protein binding]
GO:0005634 [nucleus]
GO:0005643 [nuclear pore]
GO:0005737 [cytoplasm]
GO:0005765 [lysosomal membrane]
GO:0005768 [endosome]
GO:0005771 [multivesicular body]
GO:0005828 [kinetochore microtubule]
GO:0005829 [cytosol]
GO:0005886 [plasma membrane]
GO:0006620 [post-translational protein targeting to endoplasmic reticulum membrane]
GO:0006900 [vesicle budding from membrane]
GO:0006914 [autophagy]
GO:0006997 [nucleus organization]
GO:0007034 [vacuolar transport]
GO:0007080 [mitotic metaphase plate congression]
GO:0008289 [lipid binding]
GO:0008333 [endosome to lysosome transport]
GO:0009898 [cytoplasmic side of plasma membrane]
GO:0010324 [membrane invagination]
GO:0015031 [protein transport]
GO:0016020 [membrane]
GO:0016236 [macroautophagy]
GO:0030117 [membrane coat]
GO:0030496 [midbody]
GO:0030659 [cytoplasmic vesicle membrane]
GO:0031410 [cytoplasmic vesicle]
GO:0031468 [nuclear membrane reassembly]
GO:0031902 [late endosome membrane]
GO:0032511 [late endosome to vacuole transport via multivesicular body sorting pathway]
GO:0032585 [multivesicular body membrane]
GO:0036258 [multivesicular body assembly]
GO:0039702 [viral budding via host ESCRT complex]
GO:0042802 [identical protein binding]
GO:0042803 [protein homodimerization activity]
GO:0043162 [ubiquitin-dependent protein catabolic process via the multivesicular body sorting pathway]
GO:0046761 [viral budding from plasma membrane]
GO:0051117 [ATPase binding]
GO:0051258 [protein polymerization]
GO:0051469 [vesicle fusion with vacuole]
GO:0060548 [negative regulation of cell death]
GO:0061763 [multivesicular body-lysosome fusion]
GO:0061952 [midbody abscission]
GO:0071985 [multivesicular body sorting pathway]
GO:0090148 [membrane fission]
GO:0097320 [plasma membrane tubulation]
GO:0097352 [autophagosome maturation]
GO:1901215 [negative regulation of neuron death]
GO:1901673 [regulation of mitotic spindle assembly]
GO:1902774 [late endosome to lysosome transport]
GO:1902902 [negative regulation of autophagosome assembly]
GO:1904930 [amphisome membrane]
Show all
222 aa
25.1 kDa
No 0
CHMP4A-204
ENSP00000449757
ENST00000530996
H0YIN6
[Direct mapping] Charged multivesicular body protein 4a
Show all
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0000776 [kinetochore]
GO:0001778 [plasma membrane repair]
GO:0005643 [nuclear pore]
GO:0005765 [lysosomal membrane]
GO:0005828 [kinetochore microtubule]
GO:0007034 [vacuolar transport]
GO:0007080 [mitotic metaphase plate congression]
GO:0008333 [endosome to lysosome transport]
GO:0030496 [midbody]
GO:0031468 [nuclear membrane reassembly]
GO:0032585 [multivesicular body membrane]
GO:0039702 [viral budding via host ESCRT complex]
GO:0043162 [ubiquitin-dependent protein catabolic process via the multivesicular body sorting pathway]
GO:0046761 [viral budding from plasma membrane]
GO:0060548 [negative regulation of cell death]
GO:0061952 [midbody abscission]
GO:0090148 [membrane fission]
GO:0097352 [autophagosome maturation]
GO:1901673 [regulation of mitotic spindle assembly]
GO:1902774 [late endosome to lysosome transport]
GO:1904930 [amphisome membrane]
Show all
117 aa
13.1 kDa
No 0
CHMP4A-206
ENSP00000432575
ENST00000533011
E9PQ80
[Direct mapping] Charged multivesicular body protein 4a
Show all
Predicted intracellular proteins
   Intracellular proteins predicted by MDM and MDSEC
Protein evidence (Ezkurdia et al 2014)
Show all
GO:0000776 [kinetochore]
GO:0001778 [plasma membrane repair]
GO:0005643 [nuclear pore]
GO:0005765 [lysosomal membrane]
GO:0005828 [kinetochore microtubule]
GO:0007034 [vacuolar transport]
GO:0007080 [mitotic metaphase plate congression]
GO:0008333 [endosome to lysosome transport]
GO:0030496 [midbody]
GO:0031468 [nuclear membrane reassembly]
GO:0032585 [multivesicular body membrane]
GO:0039702 [viral budding via host ESCRT complex]
GO:0043162 [ubiquitin-dependent protein catabolic process via the multivesicular body sorting pathway]
GO:0046761 [viral budding from plasma membrane]
GO:0060548 [negative regulation of cell death]
GO:0061952 [midbody abscission]
GO:0090148 [membrane fission]
GO:0097352 [autophagosome maturation]
GO:1901673 [regulation of mitotic spindle assembly]
GO:1902774 [late endosome to lysosome transport]
GO:1904930 [amphisome membrane]
Show all
213 aa
24.2 kDa
No 0

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