Gene description for Gnai2
Gene name guanine nucleotide binding protein (G protein), alpha inhibiting activity polypeptide 2
Gene symbol Gnai2
Other names/aliases Galphai2
Species Rattus norvegicus
 Database cross references - Gnai2
ExoCarta ExoCarta_81664
Vesiclepedia VP_81664
Entrez Gene 81664
UniProt P04897  
 Gnai2 identified in sEVs derived from the following tissue/cell type
Adipocytes 25998041    
Hepatocytes 19367702    
Reticulocytes 21828046    
Reticulocytes 21828046    
Reticulocytes 21828046    
Reticulocytes 21828046    
Reticulocytes 21828046    
Reticulocytes 21828046    
Urine 20535238    
 Gene ontology annotations for Gnai2
Molecular Function
    G protein-coupled receptor binding GO:0001664 IBA
    GTPase activity GO:0003924 IBA
    GTPase activity GO:0003924 IEA
    protein binding GO:0005515 IPI
    GTP binding GO:0005525 IEA
    G-protein beta/gamma-subunit complex binding GO:0031683 IBA
    G-protein beta/gamma-subunit complex binding GO:0031683 IEA
    metal ion binding GO:0046872 IEA
Biological Process
    G protein-coupled adenosine receptor signaling pathway GO:0001973 IBA
    G protein-coupled adenosine receptor signaling pathway GO:0001973 IDA
    G protein-coupled receptor signaling pathway GO:0007186 IDA
    adenylate cyclase-modulating G protein-coupled receptor signaling pathway GO:0007188 IEA
    adenylate cyclase-activating G protein-coupled receptor signaling pathway GO:0007189 IMP
    adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway GO:0007193 IBA
    adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway GO:0007193 ISO
    G protein-coupled acetylcholine receptor signaling pathway GO:0007213 ISO
    gamma-aminobutyric acid signaling pathway GO:0007214 IBA
    gamma-aminobutyric acid signaling pathway GO:0007214 IDA
    G protein-coupled glutamate receptor signaling pathway GO:0007216 IDA
    regulation of heart contraction GO:0008016 ISO
    cell population proliferation GO:0008283 ISO
    positive regulation of cell population proliferation GO:0008284 IMP
    positive regulation of cell population proliferation GO:0008284 ISO
    positive regulation of cell migration GO:0030335 IMP
    positive regulation of superoxide anion generation GO:0032930 IMP
    positive regulation of NAD(P)H oxidase activity GO:0033864 IMP
    positive regulation of urine volume GO:0035810 IMP
    negative regulation of calcium ion-dependent exocytosis GO:0045955 IMP
    modulation of chemical synaptic transmission GO:0050804 ISO
    negative regulation of synaptic transmission GO:0050805 IDA
    cell division GO:0051301 IEA
    cell division GO:0051301 ISO
    cell division GO:0051301 ISS
    regulation of calcium ion transport GO:0051924 IDA
    positive regulation of ERK1 and ERK2 cascade GO:0070374 IMP
    negative regulation of adenylate cyclase-activating adrenergic receptor signaling pathway GO:0071878 IDA
    positive regulation of vascular associated smooth muscle cell proliferation GO:1904707 IMP
    positive regulation of neural precursor cell proliferation GO:2000179 IMP
    negative regulation of apoptotic signaling pathway GO:2001234 IMP
Subcellular Localization
    nucleoplasm GO:0005654 IEA
    nucleoplasm GO:0005654 ISO
    cytoplasm GO:0005737 IBA
    cytoplasm GO:0005737 IEA
    cytoplasm GO:0005737 ISO
    cytoplasm GO:0005737 ISS
    centrosome GO:0005813 IEA
    centrosome GO:0005813 ISO
    centrosome GO:0005813 ISS
    cytosol GO:0005829 IEA
    cytosol GO:0005829 ISO
    heterotrimeric G-protein complex GO:0005834 IBA
    plasma membrane GO:0005886 IDA
    plasma membrane GO:0005886 IEA
    plasma membrane GO:0005886 ISO
    plasma membrane GO:0005886 TAS
    dendrite GO:0030425 ISO
    midbody GO:0030496 ISO
    midbody GO:0030496 ISS
    cell body GO:0044297 ISO
    exocytic vesicle GO:0070382 ISO
    hippocampal mossy fiber to CA3 synapse GO:0098686 ISO
    neuronal dense core vesicle GO:0098992 ISO
 Experiment description of studies that identified Gnai2 in sEVs
1
Experiment ID 225
MISEV standards
✔
EM
Biophysical techniques
✔
GAPDH|CD63
Enriched markers
✘ Negative markers
✔
NTA
Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 25998041    
Organism Rattus norvegicus
Experiment description Proteomic Analysis of Extracellular Vesicles Released by Adipocytes of Otsuka Long-Evans Tokushima Fatty (OLETF) Rats.
Authors "Lee JE, Moon PG, Lee IK, Baek MC"
Journal name Protein J
Publication year 2015
Sample Adipocytes
Sample name Adipocytes
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
Western blotting
2
Experiment ID 35
MISEV standards
✔
CEM
Biophysical techniques
✔
TSG101|Alix|CD81|CD63
Enriched markers
✔
HSPA5
Negative markers
✘ Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 19367702    
Organism Rattus norvegicus
Experiment description Characterization and Comprehensive Proteome Profiling of Exosomes Secreted by Hepatocytes.
Authors "Conde-Vancells J, Rodriguez-Suarez E, Embade N, Gil D, Matthiesen R, Valle M, Elortza F, Lu SC, Mato JM, Falcon-Perez JM"
Journal name JPR
Publication year 2008
Sample Hepatocytes
Sample name Hepatocytes
Isolation/purification methods Differential centrifugation
Filtration
Sucrose density gradient
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry [QTOF]
Western blotting
3
Experiment ID 90
MISEV standards
✔
EM
Biophysical techniques
✔
HSC70|HSP90|TSG101|MHCI
Enriched markers
✘ Negative markers
✘ Particle analysis
Identified molecule protein
Identification method Mass spectrometry [Orbitrap]
PubMed ID 21828046    
Organism Rattus norvegicus
Experiment description The proteo-lipidic composition of exosomes changes during reticulocyte maturation.
Authors "Carayon K, Chaoui K, Ronzier E, Lazar I, Bertrand-Michel J, Roques V, Balor S, Terce F, Lopez A, Salome L, Joly E"
Journal name JBC
Publication year 2011
Sample Reticulocytes
Sample name Reticulocytes - D2 Rep 1
Isolation/purification methods Differential centrifugation
Ultracentrifugation
Sucrose density gradient
Flotation density 1.16-1.21 g/mL
Molecules identified in the study Protein
Lipids
Methods used in the study Mass spectrometry [QSTAR]
Mass spectrometry [Orbitrap]
Western blotting
4
Experiment ID 94
MISEV standards
✔
EM
Biophysical techniques
✔
TSG101|HSP90|HSC70|MHCI
Enriched markers
✘ Negative markers
✘ Particle analysis
Identified molecule protein
Identification method Mass spectrometry [Orbitrap]
PubMed ID 21828046    
Organism Rattus norvegicus
Experiment description The proteo-lipidic composition of exosomes changes during reticulocyte maturation.
Authors "Carayon K, Chaoui K, Ronzier E, Lazar I, Bertrand-Michel J, Roques V, Balor S, Terce F, Lopez A, Salome L, Joly E."
Journal name JBC
Publication year 2011
Sample Reticulocytes
Sample name Reticulocytes - D4 Rep 1
Isolation/purification methods Differential centrifugation
Ultracentrifugation
Sucrose density gradient
Flotation density 1.16-1.21 g/mL
Molecules identified in the study Protein
Lipids
Methods used in the study Mass spectrometry [QSTAR]
Mass spectrometry [Orbitrap]
Western blotting
5
Experiment ID 95
MISEV standards
✔
EM
Biophysical techniques
✔
TSG101|HSP90|HSC70|MHCI
Enriched markers
✘ Negative markers
✘ Particle analysis
Identified molecule protein
Identification method Mass spectrometry [Orbitrap]
PubMed ID 21828046    
Organism Rattus norvegicus
Experiment description The proteo-lipidic composition of exosomes changes during reticulocyte maturation.
Authors "Carayon K, Chaoui K, Ronzier E, Lazar I, Bertrand-Michel J, Roques V, Balor S, Terce F, Lopez A, Salome L, Joly E."
Journal name JBC
Publication year 2011
Sample Reticulocytes
Sample name Reticulocytes - D7 Rep 1
Isolation/purification methods Differential centrifugation
Ultracentrifugation
Sucrose density gradient
Flotation density 1.13-1.25 g/mL
Molecules identified in the study Protein
Lipids
Methods used in the study Mass spectrometry [QSTAR]
Mass spectrometry [Orbitrap]
Western blotting
6
Experiment ID 96
MISEV standards
✔
EM
Biophysical techniques
✔
TSG101|HSP90|HSC70|MHCI
Enriched markers
✘ Negative markers
✘ Particle analysis
Identified molecule protein
Identification method Mass spectrometry [Orbitrap]
PubMed ID 21828046    
Organism Rattus norvegicus
Experiment description The proteo-lipidic composition of exosomes changes during reticulocyte maturation.
Authors "Carayon K, Chaoui K, Ronzier E, Lazar I, Bertrand-Michel J, Roques V, Balor S, Terce F, Lopez A, Salome L, Joly E."
Journal name JBC
Publication year 2011
Sample Reticulocytes
Sample name Reticulocytes - D2 Rep 2
Isolation/purification methods Differential centrifugation
Ultracentrifugation
Sucrose density gradient
Flotation density 1.16-1.21 g/mL
Molecules identified in the study Protein
Lipids
Methods used in the study Mass spectrometry [QSTAR]
Mass spectrometry [Orbitrap]
Western blotting
7
Experiment ID 97
MISEV standards
✔
EM
Biophysical techniques
✔
TSG101|HSP90|HSC70|MHCI
Enriched markers
✘ Negative markers
✘ Particle analysis
Identified molecule protein
Identification method Mass spectrometry [Orbitrap]
PubMed ID 21828046    
Organism Rattus norvegicus
Experiment description The proteo-lipidic composition of exosomes changes during reticulocyte maturation.
Authors "Carayon K, Chaoui K, Ronzier E, Lazar I, Bertrand-Michel J, Roques V, Balor S, Terce F, Lopez A, Salome L, Joly E."
Journal name JBC
Publication year 2011
Sample Reticulocytes
Sample name Reticulocytes - D4 Rep 2
Isolation/purification methods Differential centrifugation
Ultracentrifugation
Sucrose density gradient
Flotation density 1.16-1.21 g/mL
Molecules identified in the study Protein
Lipids
Methods used in the study Mass spectrometry [QSTAR]
Mass spectrometry [Orbitrap]
Western blotting
8
Experiment ID 98
MISEV standards
✔
EM
Biophysical techniques
✔
TSG101|HSP90|HSC70|MHCI
Enriched markers
✘ Negative markers
✘ Particle analysis
Identified molecule protein
Identification method Mass spectrometry [Orbitrap]
PubMed ID 21828046    
Organism Rattus norvegicus
Experiment description The proteo-lipidic composition of exosomes changes during reticulocyte maturation.
Authors "Carayon K, Chaoui K, Ronzier E, Lazar I, Bertrand-Michel J, Roques V, Balor S, Terce F, Lopez A, Salome L, Joly E."
Journal name JBC
Publication year 2011
Sample Reticulocytes
Sample name Reticulocytes - D7 Rep 2
Isolation/purification methods Differential centrifugation
Ultracentrifugation
Sucrose density gradient
Flotation density 1.13-1.25 g/mL
Molecules identified in the study Protein
Lipids
Methods used in the study Mass spectrometry [QSTAR]
Mass spectrometry [Orbitrap]
Western blotting
9
Experiment ID 192
MISEV standards
✔
CEM
Biophysical techniques
✔
TSG101|HSP70|CD63|CD81|FLOT
Enriched markers
✘ Negative markers
✘ Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 20535238    
Organism Rattus norvegicus
Experiment description Candidate biomarkers in exosome-like vesicles purified from rat and mouse urine samples.
Authors "Conde-Vancells J, Rodriguez-Suarez E, Gonzalez E, Berisa A, Gil D, Embade N, Valle M, Luka Z, Elortza F, Wagner C, Lu SC, Mato JM, Falcon-Perez M."
Journal name Proteomics Clin Appl
Publication year 2010
Sample Urine
Sample name Urine - Rats of liver injury
Isolation/purification methods Differential centrifugation
Filtration
UltracentrifugationSucrose cushion
Sucrose density gradient
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
 Protein-protein interactions for Gnai2
  Protein Interactor ExoCarta ID Identification method PubMed Species
1 Sumo3  
Affinity Capture-MS Rattus norvegicus
2 Gja1  
Affinity Capture-MS Rattus norvegicus
3 Itm2b 290364
Affinity Capture-MS Rattus norvegicus
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