Gene description for CHMP4A
Gene name charged multivesicular body protein 4A
Gene symbol CHMP4A
Other names/aliases C14orf123
CHMP4
CHMP4B
HSPC134
SHAX2
SNF7
SNF7-1
VPS32-1
VPS32A
Species Homo sapiens
 Database cross references - CHMP4A
ExoCarta ExoCarta_29082
Entrez Gene 29082
HGNC 20274
MIM 610051
UniProt Q9BY43  
 CHMP4A identified in exosomes derived from the following tissue/cell type
Ovarian cancer cells 23333927    
Ovarian cancer cells 23333927    
Platelets 25332113    
Platelets 25332113    
Platelets 25332113    
Prostate cancer cells 25844599    
 Gene ontology annotations for CHMP4A
Molecular Function
    protein binding GO:0005515 IPI
    lipid binding GO:0008289 IEA
    ATPase binding GO:0051117 IPI
    protein homodimerization activity GO:0042803 IPI
    identical protein binding GO:0042802 IMP
Biological Process
    vacuolar transport GO:0007034 IEA
    protein polymerization GO:0051258 IMP
    posttranslational protein targeting to membrane GO:0006620 IMP
    endosomal transport GO:0016197 TAS
    membrane budding GO:0006900 IMP
    negative regulation of autophagosome assembly GO:1902902 IMP
    nucleus organization GO:0006997 IMP
    mitotic metaphase plate congression GO:0007080 IMP
    viral process GO:0016032 TAS
    viral budding via host ESCRT complex GO:0039702 IGI
    membrane invagination GO:0010324 IMP
    negative regulation of neuron death GO:1901215 IMP
    viral life cycle GO:0019058 TAS
    cell separation after cytokinesis GO:0000920 IMP
    protein homooligomerization GO:0051260 IMP
    membrane organization GO:0061024 TAS
    membrane tubulation GO:0097320 IMP
Subcellular Localization
    late endosome membrane GO:0031902 IEA
    cytoplasm GO:0005737 IDA
    plasma membrane GO:0005886 IDA
    membrane coat GO:0030117 IMP
    extracellular exosome GO:0070062 IDA
    cytoplasmic vesicle membrane GO:0030659 IEA
    nucleus GO:0005634 IDA
    endosome GO:0005768 IDA
    midbody GO:0030496 IDA
    cytoplasmic side of plasma membrane GO:0009898 IDA
    ESCRT III complex GO:0000815 IDA
    cytosol GO:0005829 TAS
 Experiment description of studies that identified CHMP4A in exosomes
1
Experiment ID 211
ISEV standards
✔
EM
EV Biophysical techniques
✔
TSG101|Alix
EV Cytosolic markers
✔
EpCAM|TFRC
EV Membrane markers
✔
cytochrome c|GOLGA2
EV Negative markers
✘ EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 23333927    
Organism Homo sapiens
Experiment description Characterization and proteomic analysis of ovarian cancer-derived exosomes.
Authors Liang B, Peng P, Chen S, Li L, Zhang M, Cao D, Yang J, Li H, Gui T, Li X, Shen K.
Journal name J Proteomics
Publication year 2013
Sample Ovarian cancer cells
Sample name IGROV1
Isolation/purification methods Differential centrifugation
Ultracentrifugation
Sucrose density gradient
Flotation density 1.09-1.15 g/mL
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
2
Experiment ID 212
ISEV standards
✔
CEM
EV Biophysical techniques
✔
TSG101|Alix
EV Cytosolic markers
✔
EpCAM|TFRC
EV Membrane markers
✔
Cytochrome C|GOLGA2
EV Negative markers
✘ EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 23333927    
Organism Homo sapiens
Experiment description Characterization and proteomic analysis of ovarian cancer-derived exosomes.
Authors Liang B, Peng P, Chen S, Li L, Zhang M, Cao D, Yang J, Li H, Gui T, Li X, Shen K.
Journal name J Proteomics
Publication year 2013
Sample Ovarian cancer cells
Sample name OVCAR-3
Isolation/purification methods Differential centrifugation
Ultracentrifugation
Sucrose density gradient
Flotation density 1.09-1.15 g/mL
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
3
Experiment ID 231
ISEV standards
✘ EV Biophysical techniques
✔
Alix
EV Cytosolic markers
✔
CD63|CD9
EV Membrane markers
✘ EV Negative markers
✔
NTA
EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 25332113    
Organism Homo sapiens
Experiment description Lipidomic and proteomic characterization of platelet extracellular vesicle subfractions from senescent platelets
Authors Pienimaeki-Roemer A, Kuhlmann K, Bottcher A, Konovalova T, Black A, Orso E, Liebisch G, Ahrens M, Eisenacher M, Meyer HE, Schmitz G.
Journal name Transfusion
Publication year 2015
Sample Platelets
Sample name PL-Exs - Rep 1
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Optiprep density gradient
Flotation density 1.12-1.15 g/mL
Molecules identified in the study Protein
Lipids
Methods used in the study Western blotting
Mass spectrometry
4
Experiment ID 232
ISEV standards
✘ EV Biophysical techniques
✘ EV Cytosolic markers
✘ EV Membrane markers
✘ EV Negative markers
✘ EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 25332113    
Organism Homo sapiens
Experiment description Lipidomic and proteomic characterization of platelet extracellular vesicle subfractions from senescent platelets
Authors Pienimaeki-Roemer A, Kuhlmann K, Bottcher A, Konovalova T, Black A, Orso E, Liebisch G, Ahrens M, Eisenacher M, Meyer HE, Schmitz G.
Journal name Transfusion
Publication year 2015
Sample Platelets
Sample name PL-Exs - Rep 2
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Optiprep density gradient
Flotation density 1.12-1.15 g/mL
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
5
Experiment ID 233
ISEV standards
✘ EV Biophysical techniques
✘ EV Cytosolic markers
✘ EV Membrane markers
✘ EV Negative markers
✘ EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 25332113    
Organism Homo sapiens
Experiment description Lipidomic and proteomic characterization of platelet extracellular vesicle subfractions from senescent platelets
Authors Pienimaeki-Roemer A, Kuhlmann K, Bottcher A, Konovalova T, Black A, Orso E, Liebisch G, Ahrens M, Eisenacher M, Meyer HE, Schmitz G.
Journal name Transfusion
Publication year 2015
Sample Platelets
Sample name PL-Exs - Rep 3
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Optiprep density gradient
Flotation density 1.12-1.15 g/mL
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
6
Experiment ID 275
ISEV standards
✔
EM
EV Biophysical techniques
✔
TSG101|Alix|RAB5A
EV Cytosolic markers
✔
CD9|CD82|CD63|CD81
EV Membrane markers
✔
AIF
EV Negative markers
✔
NTA
EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 25844599    
Organism Homo sapiens
Experiment description Molecular profiling of prostate cancer derived exosomes may reveal a predictive signature for response to docetaxel.
Authors Kharaziha P, Chioureas D, Rutishauser D, Baltatzis G, Lennartsson L, Fonseca P, Azimi A, Hultenby K, Zubarev R, Ullen A, Yachnin J, Nilsson S, Panaretakis T.
Journal name Oncotarget
Publication year 2015
Sample Prostate cancer cells
Sample name DU145 - Docetaxel sensitive
Isolation/purification methods Filtration
Ultracentrifugation
Sucrose density gradient
Flotation density 1.12-1.19 g/mL
Molecules identified in the study Protein
Methods used in the study Mass spectrometry/Flow cytometry/Western blotting
 Protein-protein interactions for CHMP4A
  Protein Interactor ExoCarta ID Identification method PubMed Species
1 SYT17  
Two-hybrid Homo sapiens
2 PDCD6IP 10015
Affinity Capture-MS Homo sapiens
View the network image/svg+xml
 Pathways in which CHMP4A is involved
PathwayEvidenceSource
Budding and maturation of HIV virion TAS Reactome
Endosomal Sorting Complex Required For Transport (ESCRT) TAS Reactome





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