Gene description for CA2
Gene name carbonic anhydrase II
Gene symbol CA2
Other names/aliases CA-II
CAC
CAII
Car2
HEL-76
Species Homo sapiens
 Database cross references - CA2
ExoCarta ExoCarta_760
Entrez Gene 760
HGNC 1373
MIM 611492
UniProt P00918  
 CA2 identified in exosomes derived from the following tissue/cell type
Nasopharyngeal carcinoma cells 25857718    
Nasopharyngeal carcinoma cells 25857718    
Nasopharyngeal carcinoma cells 25857718    
Ovarian cancer cells 23333927    
Ovarian cancer cells 23333927    
Platelets 25332113    
Platelets 25332113    
Platelets 25332113    
Urine 15326289    
Urine 19056867    
Urine 22418980    
Urine 22418980    
 Gene ontology annotations for CA2
Molecular Function
    arylesterase activity GO:0004064 IMP
    carbonate dehydratase activity GO:0004089 IMP
    zinc ion binding GO:0008270 IDA
    protein binding GO:0005515 IPI
Biological Process
    secretion GO:0046903 IEA
    bicarbonate transport GO:0015701 TAS
    response to zinc ion GO:0010043 IEA
    regulation of intracellular pH GO:0051453 ISS
    positive regulation of synaptic transmission, GABAergic GO:0032230 IEA
    morphogenesis of an epithelium GO:0002009 IEA
    cellular response to fluid shear stress GO:0071498 IEA
    response to pH GO:0009268 IEA
    regulation of chloride transport GO:2001225 IEA
    positive regulation of bone resorption GO:0045780 IEA
    response to estrogen GO:0043627 IEA
    regulation of anion transport GO:0044070 IDA
    kidney development GO:0001822 IEA
    angiotensin-activated signaling pathway GO:0038166 IDA
    positive regulation of osteoclast differentiation GO:0045672 IEA
    one-carbon metabolic process GO:0006730 IEA
    positive regulation of dipeptide transmembrane transport GO:2001150 ISS
    positive regulation of cellular pH reduction GO:0032849 IEA
    small molecule metabolic process GO:0044281 TAS
    odontogenesis of dentin-containing tooth GO:0042475 IEA
Subcellular Localization
    cytosol GO:0005829 TAS
    axon GO:0030424 IEA
    myelin sheath GO:0043209 IEA
    extracellular space GO:0005615 IEA
    apical part of cell GO:0045177 IDA
    basolateral plasma membrane GO:0016323 IEA
    extracellular exosome GO:0070062 IDA
    plasma membrane GO:0005886 IDA
    microvillus GO:0005902 IEA
    cytoplasm GO:0005737 IDA
 Experiment description of studies that identified CA2 in exosomes
1
Experiment ID 219
ISEV standards
✔
EM
EV Biophysical techniques
✘ EV Cytosolic markers
✔
CD63|CD9
EV Membrane markers
✔
HSP90B1
EV Negative markers
✔
qNano
EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 25857718    
Organism Homo sapiens
Experiment description Proteomic analysis of exosomes from nasopharyngeal carcinoma cell identifies intercellular transfer of angiogenic proteins
Authors Chan YK, Zhang H, Liu P, Tsao GS, Li Lung M, Mak NK, Ngok-Shun Wong R, Ying-Kit Yue P
Journal name Int J Cancer
Publication year 2015
Sample Nasopharyngeal carcinoma cells
Sample name C666-1
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Sucrose density gradient
Flotation density 1.17-1.19 g/mL
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
2
Experiment ID 220
ISEV standards
✔
EM
EV Biophysical techniques
✘ EV Cytosolic markers
✔
CD63|CD9
EV Membrane markers
✔
HSP90B1
EV Negative markers
✔
qNano
EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 25857718    
Organism Homo sapiens
Experiment description Proteomic analysis of exosomes from nasopharyngeal carcinoma cell identifies intercellular transfer of angiogenic proteins
Authors Chan YK, Zhang H, Liu P, Tsao GS, Li Lung M, Mak NK, Ngok-Shun Wong R, Ying-Kit Yue P
Journal name Int J Cancer
Publication year 2015
Sample Nasopharyngeal carcinoma cells
Sample name NP69
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Sucrose density gradient
Flotation density 1.17-1.19 g/mL
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
3
Experiment ID 221
ISEV standards
✔
EM
EV Biophysical techniques
✘ EV Cytosolic markers
✔
CD63|CD9
EV Membrane markers
✔
HSP90B1
EV Negative markers
✔
qNano
EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 25857718    
Organism Homo sapiens
Experiment description Proteomic analysis of exosomes from nasopharyngeal carcinoma cell identifies intercellular transfer of angiogenic proteins
Authors Chan YK, Zhang H, Liu P, Tsao GS, Li Lung M, Mak NK, Ngok-Shun Wong R, Ying-Kit Yue P
Journal name Int J Cancer
Publication year 2015
Sample Nasopharyngeal carcinoma cells
Sample name NP460
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Sucrose density gradient
Flotation density 1.17-1.19 g/mL
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
4
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
5
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
6
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
7
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
8
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
9
Experiment ID 13
ISEV standards
✔
IEM
EV Biophysical techniques
✔
Alix|RAB4|RAB5B|RAB11|TSG101
EV Cytosolic markers
✔
CD9|AQP2|AQP1
EV Membrane markers
✘ EV Negative markers
✘ EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 15326289    
Organism Homo sapiens
Experiment description Identification and proteomic profiling of exosomes in human urine.
Authors Pisitkun T, Shen RF, Knepper MA
Journal name PNAS
Publication year 2004
Sample Urine
Sample name Urine - Normal
Isolation/purification methods Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry [LCQ DECA XP]
Western blotting
10
Experiment ID 63
ISEV standards
✘ EV Biophysical techniques
✘ EV Cytosolic markers
✔
AQP2
EV Membrane markers
✘ EV Negative markers
✘ EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 19056867    
Organism Homo sapiens
Experiment description Large-scale proteomics and phosphoproteomics of urinary exosomes.
Authors Gonzales PA, Pisitkun T, Hoffert JD, Tchapyjnikov D, Star RA, Kleta R, Wang NS, Knepper MA
Journal name JASN
Publication year 2009
Sample Urine
Sample name Urine - Normal
Isolation/purification methods Differential centrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry [LTQ]
Western blotting
11
Experiment ID 196
ISEV standards
✔
EM
EV Biophysical techniques
✔
Alix|TSG101|HSP70
EV Cytosolic markers
✔
CD9
EV Membrane markers
✘ EV Negative markers
✘ EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 22418980    
Organism Homo sapiens
Experiment description A multiplex quantitative proteomics strategy for protein biomarker studies in urinary exosomes.
Authors Raj DA, Fiume I, Capasso G, Pocsfalvi G.
Journal name Kidney Int
Publication year 2012
Sample Urine
Sample name Urine - Normal high density
Isolation/purification methods Differential centrifugation
Sucrose cushion
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
12
Experiment ID 197
ISEV standards
✔
EM
EV Biophysical techniques
✔
Alix|TSG101|HSP70
EV Cytosolic markers
✔
CD9
EV Membrane markers
✘ EV Negative markers
✘ EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 22418980    
Organism Homo sapiens
Experiment description A multiplex quantitative proteomics strategy for protein biomarker studies in urinary exosomes.
Authors Raj DA, Fiume I, Capasso G, Pocsfalvi G.
Journal name Kidney Int
Publication year 2012
Sample Urine
Sample name Urine - Normal low density
Isolation/purification methods Differential centrifugation
Sucrose cushion
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
 Protein-protein interactions for CA2
  Protein Interactor ExoCarta ID Identification method PubMed Species
1 SLC4A2 6522
Invitro Homo sapiens
2 NONO 4841
Reconstituted Complex Homo sapiens
3 SLC4A1 6521
Invitro Homo sapiens
Invitro Homo sapiens
Invitro Homo sapiens
Reconstituted Complex Homo sapiens
4 HSPD1 3329
Affinity Capture-MS Homo sapiens
Co-crystal Structure Homo sapiens
5 SLC9A1 6548
Affinity Capture-MS Homo sapiens
Reconstituted Complex Homo sapiens
Affinity Capture-Western Homo sapiens
6 SLC4A8 9498
Affinity Capture-MS Homo sapiens
Reconstituted Complex Homo sapiens
7 SLC4A4 8671
Invitro Homo sapiens
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