Gene description for Sar1a
Gene name secretion associated, Ras related GTPase 1A
Gene symbol Sar1a
Other names/aliases Sara1
Species Rattus norvegicus
 Database cross references - Sar1a
ExoCarta ExoCarta_361842
Vesiclepedia VP_361842
Entrez Gene 361842
 Sar1a identified in sEVs derived from the following tissue/cell type
Reticulocytes 21828046    
Reticulocytes 21828046    
Reticulocytes 21828046    
Reticulocytes 21828046    
 Gene ontology annotations for Sar1a
Molecular Function
    G protein activity GO:0003925 ISO
    GTP binding GO:0005525 IEA
    amino acid sensor activity GO:0140785 ISO
Biological Process
    intracellular protein transport GO:0006886 IEA
    endoplasmic reticulum to Golgi vesicle-mediated transport GO:0006888 ISO
    biological_process GO:0008150 ND
    vesicle-mediated transport GO:0016192 ISO
    lipoprotein transport GO:0042953 ISO
    COPII vesicle coating GO:0048208 ISO
    COPII-coated vesicle cargo loading GO:0090110 ISO
    regulation of cargo loading into COPII-coated vesicle GO:1901301 ISO
    negative regulation of cargo loading into COPII-coated vesicle GO:1901303 ISO
    regulation of TORC1 signaling GO:1903432 ISO
    negative regulation of TORC1 signaling GO:1904262 ISO
    cellular response to leucine starvation GO:1990253 ISO
Subcellular Localization
    lysosomal membrane GO:0005765 ISO
    endoplasmic reticulum GO:0005783 ISO
    endoplasmic reticulum membrane GO:0005789 IEA
    Golgi apparatus GO:0005794 ISO
    cytosol GO:0005829 IEA
    sarcoplasmic reticulum GO:0016529 ISO
    COPII vesicle coat GO:0030127 ISO
    Golgi cisterna membrane GO:0032580 IEA
    endoplasmic reticulum exit site GO:0070971 ISO
 Experiment description of studies that identified Sar1a in sEVs
1
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
2
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
3
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
4
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
 Protein-protein interactions for Sar1a
  Protein Interactor ExoCarta ID Identification method PubMed Species
No interactions are found.
 Pathways in which Sar1a is involved
No pathways found





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