Gene description for RAB22A
Gene name RAB22A, member RAS oncogene family
Gene symbol RAB22A
Other names/aliases -
Species Homo sapiens
 Database cross references - RAB22A
ExoCarta ExoCarta_57403
Vesiclepedia VP_57403
Entrez Gene 57403
HGNC 9764
MIM 612966
UniProt Q9UL26  
 RAB22A identified in sEVs derived from the following tissue/cell type
Bone marrow mesenchymal stem cells 36408942    
Bone marrow mesenchymal stem cells 36408942    
Bone marrow mesenchymal stem cells 36408942    
Bone marrow mesenchymal stem cells 36408942    
Colorectal cancer cells 34887515    
Endothelial cells 26027894    
Gastric cancer cells 33991177    
Gastric cancer cells 33991177    
Gastric cancer cells 33991177    
Mesenchymal stem cells 36408942    
Ovarian cancer cells 23333927    
Ovarian cancer cells 23333927    
Retinal pigment epithelial cells 35333565    
Retinal pigment epithelial cells 35333565    
Saliva 19199708    
Thymus 23844026    
Urine 19056867    
 Gene ontology annotations for RAB22A
Molecular Function
    GTPase activity GO:0003924 IBA
    GTPase activity GO:0003924 IMP
    GTPase activity GO:0003924 TAS
    protein binding GO:0005515 IPI
    GTP binding GO:0005525 IMP
    GDP binding GO:0019003 IDA
Biological Process
    intracellular protein transport GO:0006886 IBA
    endocytosis GO:0006897 IBA
    endocytosis GO:0006897 IDA
    endosome organization GO:0007032 IEP
    regulation of vesicle size GO:0097494 IMP
Subcellular Localization
    ruffle GO:0001726 IEA
    early endosome GO:0005769 IBA
    early endosome GO:0005769 IDA
    late endosome GO:0005770 IEA
    plasma membrane GO:0005886 IDA
    endosome membrane GO:0010008 IEA
    endomembrane system GO:0012505 IBA
    actin cytoskeleton GO:0015629 IEA
    phagocytic vesicle membrane GO:0030670 IEA
    phagocytic vesicle GO:0045335 IDA
    extracellular exosome GO:0070062 HDA
 Experiment description of studies that identified RAB22A in sEVs
1
Experiment ID 489
MISEV standards
✔
EM
Biophysical techniques
✔
Cd9|Cd81|Cd63|Gapdh|Sdcbp|Lamp1|Aqp1|Rab5a|Icam1|Cd82|Itga2b|Tsg101|Lamp2|Rab35|Flot1|Flot2|Cd151|Rab5b|Tfrc|Uchl1
Enriched markers
✔
Canx
Negative markers
✔
NTA
Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 36408942    
Organism Rattus norvegicus
Experiment description Quantitative proteomic analysis of exosomes from umbilical cord mesenchymal stem cells and rat bone marrow stem cells
Authors "Xu X, Yin F, Guo M, Gan G, Lin G, Wen C, Wang J, Song P, Wang J, Qi ZQ, Zhong CQ."
Journal name Proteomics
Publication year 2023
Sample Bone marrow mesenchymal stem cells
Sample name BMSC - Passage 6
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectometry
2
Experiment ID 490
MISEV standards
✔
EM
Biophysical techniques
✔
Cd9|Cd81|Cd63|Gapdh|Sdcbp|Lamp1|Aqp1|Rab5a|Icam1|Cd82|Itga2b|Tsg101|Lamp2|Rab35|Flot1|Flot2|Cd151|Rab5b|Tfrc|Uchl1
Enriched markers
✔
Canx
Negative markers
✔
NTA
Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 36408942    
Organism Rattus norvegicus
Experiment description Quantitative proteomic analysis of exosomes from umbilical cord mesenchymal stem cells and rat bone marrow stem cells
Authors "Xu X, Yin F, Guo M, Gan G, Lin G, Wen C, Wang J, Song P, Wang J, Qi ZQ, Zhong CQ."
Journal name Proteomics
Publication year 2023
Sample Bone marrow mesenchymal stem cells
Sample name BMSC - Passage 7
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectometry
3
Experiment ID 491
MISEV standards
✔
EM
Biophysical techniques
✔
Cd9|Cd81|Cd63|Gapdh|Sdcbp|Lamp1|Aqp1|Rab5a|Icam1|Cd82|Itga2b|Tsg101|Lamp2|Rab35|Flot1|Flot2|Cd151|Rab5b|Tfrc|Uchl1
Enriched markers
✔
Canx
Negative markers
✔
NTA
Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 36408942    
Organism Rattus norvegicus
Experiment description Quantitative proteomic analysis of exosomes from umbilical cord mesenchymal stem cells and rat bone marrow stem cells
Authors "Xu X, Yin F, Guo M, Gan G, Lin G, Wen C, Wang J, Song P, Wang J, Qi ZQ, Zhong CQ."
Journal name Proteomics
Publication year 2023
Sample Bone marrow mesenchymal stem cells
Sample name BMSC - Passage 8
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectometry
4
Experiment ID 492
MISEV standards
✔
EM
Biophysical techniques
✔
Cd9|Cd81|Cd63|Gapdh|Sdcbp|Lamp1|Aqp1|Rab5a|Icam1|Cd82|Itga2b|Tsg101|Lamp2|Rab35|Flot1|Flot2|Cd151|Rab5b|Tfrc|Uchl1
Enriched markers
✔
Canx
Negative markers
✔
NTA
Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 36408942    
Organism Rattus norvegicus
Experiment description Quantitative proteomic analysis of exosomes from umbilical cord mesenchymal stem cells and rat bone marrow stem cells
Authors "Xu X, Yin F, Guo M, Gan G, Lin G, Wen C, Wang J, Song P, Wang J, Qi ZQ, Zhong CQ."
Journal name Proteomics
Publication year 2023
Sample Bone marrow mesenchymal stem cells
Sample name BMSC - Passage 9
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectometry
5
Experiment ID 1203
MISEV standards
✔
EM
Biophysical techniques
✔
SDCBP|FLOT1|CD9|CD81|CD63|EPCAM|GAPDH|LAMP1|TFRC|CD151|CD82|LAMP2|RAB35|TSG101|FLOT2|RAB5B|ICAM1|RAB5A
Enriched markers
✘ Negative markers
✘ Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 34887515    
Organism Homo sapiens
Experiment description Supermeres are functional extracellular nanoparticles replete with disease biomarkers and therapeutic targets
Authors "Zhang Q, Jeppesen DK, Higginbotham JN, Graves-Deal R, Trinh VQ, Ramirez MA, Sohn Y, Neininger AC, Taneja N, McKinley ET, Niitsu H, Cao Z, Evans R, Glass SE, Ray KC, Fissell WH, Hill S, Rose KL, Huh WJ, Washington MK, Ayers GD, Burnette DT, Sharma S, Rome LH, Franklin JL, Lee YA, Liu Q, Coffey RJ."
Journal name Nat Cell Biol
Publication year 2021
Sample Colorectal cancer cells
Sample name DiFi
Isolation/purification methods Differential centrifugation
Filtration
Centrifugal ultrafiltration
Ultracentrifugation
OptiPrep density gradient centrifugation
Flotation density -
Molecules identified in the study Protein
miRNA
Methods used in the study Western blotting
Mass spectrometry
RNA sequencing
6
Experiment ID 226
MISEV standards
✔
EM
Biophysical techniques
✔
GAPDH|CD9|FLOT1
Enriched markers
✔
LMNA|H2AFX|ATP5A1|TOMM20
Negative markers
✘ Particle analysis
Identified molecule mRNA
Identification method Small RNA sequencing (Illumina HiSeq 2000 (Solexa)
PubMed ID 26027894    
Organism Homo sapiens
Experiment description "Quantitative and qualitative analysis of small RNAs in human endothelial cells and exosomes provides insights into localized RNA processing, degradation and sorting"
Authors "Bas W. M. van Balkom, Almut S. Eisele, D. Michiel Pegtel, Sander Bervoets, Marianne C. Verhaar"
Journal name Journal of Extracellular Vesicles
Publication year 2015
Sample Endothelial cells
Sample name HMEC-1
Isolation/purification methods Differential ultracentrifugation
Sucrose density gradient
Flotation density 1.10 g/mL
Molecules identified in the study miRNA
Protein
snoRNA
lncRNA
yRNA
snRNA
mRNA
ncRNA
mtRNA
vtRNA
scaRNA
lincRNA
Methods used in the study Small RNA sequencing (Illumina HiSeq 2000 (Solexa)
Western blotting
7
Experiment ID 226
MISEV standards
✔
EM
Biophysical techniques
✔
GAPDH|CD9|FLOT1
Enriched markers
✔
LMNA|H2AFX|ATP5A1|TOMM20
Negative markers
✘ Particle analysis
Identified molecule mRNA
Identification method Small RNA sequencing (Illumina HiSeq 2000 (Solexa)
PubMed ID 26027894    
Organism Homo sapiens
Experiment description "Quantitative and qualitative analysis of small RNAs in human endothelial cells and exosomes provides insights into localized RNA processing, degradation and sorting"
Authors "Bas W. M. van Balkom, Almut S. Eisele, D. Michiel Pegtel, Sander Bervoets, Marianne C. Verhaar"
Journal name Journal of Extracellular Vesicles
Publication year 2015
Sample Endothelial cells
Sample name HMEC-1
Isolation/purification methods Differential ultracentrifugation
Sucrose density gradient
Flotation density 1.10 g/mL
Molecules identified in the study miRNA
Protein
snoRNA
lncRNA
yRNA
snRNA
mRNA
ncRNA
mtRNA
vtRNA
scaRNA
lincRNA
Methods used in the study Small RNA sequencing (Illumina HiSeq 2000 (Solexa)
Western blotting
8
Experiment ID 363
MISEV standards
✘ Biophysical techniques
✔
TSG101|GAPDH|AQP1|CD151|CD81|CD82|CD9|EPCAM|FLOT1|FLOT2|ICAM1|ITGA2B|LAMP2|RAB35|RAB5A|RAB5B|SDCBP|TFRC|UCHL1
Enriched markers
✔
DCLK1
Negative markers
✔
NTA
Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 33991177    
Organism Homo sapiens
Experiment description Cancer stem cell marker DCLK1 reprograms small extracellular vesicles toward migratory phenotype in gastric cancer cells
Authors "Carli ALE, Afshar-Sterle S, Rai A, Fang H, O'Keefe R, Tse J, Ferguson FM, Gray NS, Ernst M, Greening DW, Buchert M."
Journal name Proteomics
Publication year 2021
Sample Gastric cancer cells
Sample name MKN1 - 100K pellet
Isolation/purification methods Differential centrifugation
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectrometry
9
Experiment ID 364
MISEV standards
✘ Biophysical techniques
✔
TSG101|GAPDH|AQP1|CD151|CD81|CD82|CD9|EPCAM|FLOT1|FLOT2|ICAM1|ITGA2B|LAMP2|RAB35|RAB5A|RAB5B|SDCBP|TFRC|UCHL1
Enriched markers
✔
DCLK1
Negative markers
✔
NTA
Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 33991177    
Organism Homo sapiens
Experiment description Cancer stem cell marker DCLK1 reprograms small extracellular vesicles toward migratory phenotype in gastric cancer cells
Authors "Carli ALE, Afshar-Sterle S, Rai A, Fang H, O'Keefe R, Tse J, Ferguson FM, Gray NS, Ernst M, Greening DW, Buchert M."
Journal name Proteomics
Publication year 2021
Sample Gastric cancer cells
Sample name MKN1 - 100K pellet
Isolation/purification methods Differential centrifugation
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectrometry
10
Experiment ID 365
MISEV standards
✘ Biophysical techniques
✔
TSG101|GAPDH|AQP1|CD151|CD81|CD82|CD9|EPCAM|FLOT1|FLOT2|ICAM1|ITGA2B|LAMP2|RAB35|RAB5A|RAB5B|SDCBP|TFRC|UCHL1
Enriched markers
✔
DCLK1
Negative markers
✔
NTA
Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 33991177    
Organism Homo sapiens
Experiment description Cancer stem cell marker DCLK1 reprograms small extracellular vesicles toward migratory phenotype in gastric cancer cells
Authors "Carli ALE, Afshar-Sterle S, Rai A, Fang H, O'Keefe R, Tse J, Ferguson FM, Gray NS, Ernst M, Greening DW, Buchert M."
Journal name Proteomics
Publication year 2021
Sample Gastric cancer cells
Sample name MKN1 - 100K pellet
Isolation/purification methods Differential centrifugation
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectrometry
11
Experiment ID 488
MISEV standards
✔
EM
Biophysical techniques
✔
CD9|CD81|CD63|GAPDH|SDCBP|LAMP1|TFRC|UCHL1|FLOT2|LAMP2|FLOT1|ICAM1|RAB5B|CD151|RAB35|TSG101|RAB5A|CD82
Enriched markers
✔
CANX
Negative markers
✔
NTA
Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 36408942    
Organism Homo sapiens
Experiment description Quantitative proteomic analysis of exosomes from umbilical cord mesenchymal stem cells and rat bone marrow stem cells
Authors "Xu X, Yin F, Guo M, Gan G, Lin G, Wen C, Wang J, Song P, Wang J, Qi ZQ, Zhong CQ."
Journal name Proteomics
Publication year 2023
Sample Mesenchymal stem cells
Sample name UCMSC
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectometry
12
Experiment ID 211
MISEV standards
✔
EM
Biophysical techniques
✔
TSG101|Alix|EpCAM|TFRC
Enriched markers
✔
cytochrome c|GOLGA2
Negative markers
✘ 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
13
Experiment ID 212
MISEV standards
✔
CEM
Biophysical techniques
✔
TSG101|Alix|EpCAM|TFRC
Enriched markers
✔
Cytochrome C|GOLGA2
Negative markers
✘ 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
14
Experiment ID 834
MISEV standards
✔
EM
Biophysical techniques
✔
LAMP2|CD63|FLOT1|ITGA2B|ICAM1|CD9|CD151|TFRC|RAB5A|GAPDH|AQP1|TSG101
Enriched markers
✔
CANX
Negative markers
✔
NTA
Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 35333565    
Organism Homo sapiens
Experiment description LAMP2A regulates the loading of proteins into exosomes
Authors "Ferreira JV, da Rosa Soares A, Ramalho J, Máximo Carvalho C, Cardoso MH, Pintado P, Carvalho AS, Beck HC, Matthiesen R, Zuzarte M, Girão H, van Niel G, Pereira P"
Journal name Sci Adv
Publication year 2022
Sample Retinal pigment epithelial cells
Sample name ARPE-19
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectrometry
15
Experiment ID 835
MISEV standards
✔
EM
Biophysical techniques
✔
CD63|FLOT1|ITGA2B|ICAM1|CD9|CD151|TFRC|RAB5A|GAPDH|AQP1|TSG101
Enriched markers
✔
CANX
Negative markers
✔
NTA
Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 35333565    
Organism Homo sapiens
Experiment description LAMP2A regulates the loading of proteins into exosomes
Authors "Ferreira JV, da Rosa Soares A, Ramalho J, Máximo Carvalho C, Cardoso MH, Pintado P, Carvalho AS, Beck HC, Matthiesen R, Zuzarte M, Girão H, van Niel G, Pereira P"
Journal name Sci Adv
Publication year 2022
Sample Retinal pigment epithelial cells
Sample name ARPE-19
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectrometry
16
Experiment ID 66
MISEV standards
✔
IEM
Biophysical techniques
✔
TSG101|Alix|CD63|CD81
Enriched markers
✘ Negative markers
✘ Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 19199708    
Organism Homo sapiens
Experiment description Proteomic analysis of human parotid gland exosomes by multidimensional protein identification technology (MudPIT).
Authors "Gonzalez-Begne M, Lu B, Han X, Hagen FK, Hand AR, Melvin JE, Yates JR"
Journal name JPR
Publication year 2009
Sample Saliva
Sample name Saliva
Isolation/purification methods Differential centrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry [LTQ]
Western blotting
Immunoelectron Microscopy
17
Experiment ID 217
MISEV standards
✔
EM
Biophysical techniques
✔
TSG101|CD81|CD9|CD63
Enriched markers
✘ Negative markers
✔
NTA
Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 23844026    
Organism Homo sapiens
Experiment description Characterization of human thymic exosomes.
Authors "Skogberg G, Gudmundsdottir J, van der Post S, Sandstrom K, Bruhn S, Benson M, Mincheva-Nilsson L, Baranov V, Telemo E, Ekwall O."
Journal name PLoS One
Publication year 2013
Sample Thymus
Sample name Normal-Thymus
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
18
Experiment ID 63
MISEV standards
✘ Biophysical techniques
✔
AQP2
Enriched markers
✘ Negative markers
✘ 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
 Protein-protein interactions for RAB22A
  Protein Interactor ExoCarta ID Identification method PubMed Species
1 ALS2CL  
Two-hybrid Homo sapiens
2 RABGEF1 27342
Affinity Capture-Western Homo sapiens
Affinity Capture-Western Homo sapiens
3 GDI2 2665
Affinity Capture-MS Homo sapiens
4 GDI1 2664
Affinity Capture-MS Homo sapiens
Affinity Capture-MS Homo sapiens
Affinity Capture-MS Homo sapiens
5 RAB3GAP1 22930
Two-hybrid Homo sapiens
6 ATP6V1B1 525
Affinity Capture-MS Homo sapiens
7 APPL2 55198
Two-hybrid Homo sapiens
Two-hybrid Homo sapiens
Two-hybrid Homo sapiens
8 AKAP1 8165
Proximity Label-MS Homo sapiens
9 RAB5C 5878
Proximity Label-MS Homo sapiens
10 ELAVL1 1994
Affinity Capture-RNA Homo sapiens
11 RAB31 11031
Affinity Capture-MS Homo sapiens
Affinity Capture-MS Homo sapiens
Affinity Capture-MS Homo sapiens
12 RBSN 64145
Reconstituted Complex Homo sapiens
Co-crystal Structure Homo sapiens
13 RAB7A 7879
Two-hybrid Homo sapiens
14 EEA1 8411
Two-hybrid Homo sapiens
Reconstituted Complex Homo sapiens
15 RAB5A 5868
Affinity Capture-Western Homo sapiens
16 LAMP3  
Proximity Label-MS Homo sapiens
View the network image/svg+xml
 Pathways in which RAB22A is involved
PathwayEvidenceSource
Metabolism of proteins TAS Reactome
Post-translational protein modification TAS Reactome
RAB geranylgeranylation TAS Reactome





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