Gene description for ABCG2
Gene name ATP-binding cassette, sub-family G (WHITE), member 2 (Junior blood group)
Gene symbol ABCG2
Other names/aliases ABC15
ABCP
BCRP
BCRP1
BMDP
CD338
CDw338
EST157481
GOUT1
MRX
MXR
MXR1
UAQTL1
Species Homo sapiens
 Database cross references - ABCG2
ExoCarta ExoCarta_9429
Entrez Gene 9429
HGNC 74
MIM 603756
UniProt Q9UNQ0  
 ABCG2 identified in exosomes derived from the following tissue/cell type
Breast cancer cells 25833198    
Breast milk 17641064    
Breast milk 17641064    
Colorectal cancer cells 25890246    
Colorectal cancer cells 25890246    
Colorectal cancer cells 25890246    
Colorectal cancer cells 25890246    
 Gene ontology annotations for ABCG2
Molecular Function
    protein binding GO:0005515 IPI
    transporter activity GO:0005215 TAS
    ATPase activity, coupled to transmembrane movement of substances GO:0042626 TAS
    heme transporter activity GO:0015232 TAS
    ATP binding GO:0005524 IEA
    protein homodimerization activity GO:0042803 IDA
    xenobiotic-transporting ATPase activity GO:0008559 TAS
Biological Process
    small molecule metabolic process GO:0044281 TAS
    transmembrane transport GO:0055085 TAS
    drug transmembrane transport GO:0006855 TAS
    response to drug GO:0042493 TAS
    transport GO:0006810 TAS
    xenobiotic transport GO:0042908 TAS
    urate metabolic process GO:0046415 IMP
    heme transport GO:0015886 TAS
    cellular iron ion homeostasis GO:0006879 TAS
Subcellular Localization
    nucleoplasm GO:0005654 IDA
    integral component of membrane GO:0016021 IEA
    plasma membrane GO:0005886 TAS
    mitochondrial membrane GO:0031966 IEA
    nucleus GO:0005634 IDA
 Experiment description of studies that identified ABCG2 in exosomes
1
Experiment ID 227
ISEV standards
✘ EV Biophysical techniques
✔
Alix|TSG101
EV Cytosolic markers
✘ EV Membrane markers
✘ EV Negative markers
✘ EV Particle analysis
Identified molecule protein
Identification method Western blotting
PubMed ID 25833198    
Organism Homo sapiens
Experiment description Guggulsterone and bexarotene induce secretion of exosome-associated breast cancer resistance protein and reduce doxorubicin resistance in MDA-MB-231 cells
Authors Kong JN, He Q, Wang G, Dasgupta S, Dinkins MB, Zhu G, Kim A, Spassieva S, Bieberich E.
Journal name International Journal of Cancer
Publication year 2015
Sample Breast cancer cells
Sample name MDA-MB-231
Isolation/purification methods Differential ultracentrifugation
Sucrose density gradient
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western Blotting
2
Experiment ID 46
ISEV standards
✔
EM|IEM
EV Biophysical techniques
✔
HSC70
EV Cytosolic markers
✔
CD63|MHCII|CD81|CD86
EV Membrane markers
✔
CANX
EV Negative markers
✘ EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 17641064    
Organism Homo sapiens
Experiment description Exosomes with immune modulatory features are present in human breast milk.
Authors Admyre C, Johansson SM, Qazi KR, Filen JJ, Lahesmaa R, Norman M, Neve EP, Scheynius A, Gabrielsson S
Journal name JIMMU
Publication year 2007
Sample Breast milk
Sample name Breast milk - Colostrum
Isolation/purification methods Differential centrifugation
Filtration
Sucrose density gradient
Flotation density 1.10-1.18 g/mL
Molecules identified in the study Protein
Methods used in the study Mass spectrometry [QSTAR]
Western blotting
Immunoelectron Microscopy
FACS
3
Experiment ID 48
ISEV standards
✔
EM|IEM
EV Biophysical techniques
✔
HSC70
EV Cytosolic markers
✔
CD63|CD86|MHCII
EV Membrane markers
✔
CANX
EV Negative markers
✘ EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 17641064    
Organism Homo sapiens
Experiment description Exosomes with immune modulatory features are present in human breast milk.
Authors Admyre C, Johansson SM, Qazi KR, Filen JJ, Lahesmaa R, Norman M, Neve EP, Scheynius A, Gabrielsson S
Journal name JIMMU
Publication year 2007
Sample Breast milk
Sample name Breast milk - Mature milk
Isolation/purification methods Differential centrifugation
Filtration
Sucrose density gradient
Flotation density 1.10-1.18 g/mL
Molecules identified in the study Protein
Methods used in the study Mass spectrometry [QSTAR]
Western blotting
Immunoelectron Microscopy
FACS
4
Experiment ID 282
ISEV standards
✔
CEM
EV Biophysical techniques
✔
Alix|TSG101
EV Cytosolic markers
✔
CD63|CD81|EpCAM
EV Membrane markers
✘ EV Negative markers
✔
DLS
EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 25890246    
Organism Homo sapiens
Experiment description Highly-purified exosomes and shed microvesicles isolated from the human colon cancer cell line LIM1863 by sequential centrifugal ultrafiltration are biochemically and functionally distinct.
Authors Xu R, Greening DW, Rai A, Ji H, Simpson RJ.
Journal name Methods
Publication year 2015
Sample Colorectal cancer cells
Sample name LIM1863 - Ultracentrifugation - Rep 1
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Centrifugal concentration
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
Western blotting
5
Experiment ID 283
ISEV standards
✔
CEM
EV Biophysical techniques
✔
Alix|TSG101
EV Cytosolic markers
✔
CD63|CD81|EpCAM
EV Membrane markers
✘ EV Negative markers
✔
DLS
EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 25890246    
Organism Homo sapiens
Experiment description Highly-purified exosomes and shed microvesicles isolated from the human colon cancer cell line LIM1863 by sequential centrifugal ultrafiltration are biochemically and functionally distinct.
Authors Xu R, Greening DW, Rai A, Ji H, Simpson RJ.
Journal name Methods
Publication year 2015
Sample Colorectal cancer cells
Sample name LIM1863 - Ultracentrifugation - Rep 2
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Centrifugal concentration
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
Western blotting
6
Experiment ID 285
ISEV standards
✔
CEM
EV Biophysical techniques
✔
Alix|TSG101
EV Cytosolic markers
✔
CD63|CD81|EpCAM
EV Membrane markers
✘ EV Negative markers
✔
DLS
EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 25890246    
Organism Homo sapiens
Experiment description Highly-purified exosomes and shed microvesicles isolated from the human colon cancer cell line LIM1863 by sequential centrifugal ultrafiltration are biochemically and functionally distinct.
Authors Xu R, Greening DW, Rai A, Ji H, Simpson RJ.
Journal name Methods
Publication year 2015
Sample Colorectal cancer cells
Sample name LIM1863 - Sequential centrifugal ultrafiltration - Rep 1
Isolation/purification methods Differential centrifugation
Filtration
Sequential centrifugal ultrafiltration
Centrifugal concentration
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
Western blotting
7
Experiment ID 286
ISEV standards
✔
CEM
EV Biophysical techniques
✔
Alix|TSG101
EV Cytosolic markers
✔
CD63|CD81|EpCAM
EV Membrane markers
✘ EV Negative markers
✔
DLS
EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 25890246    
Organism Homo sapiens
Experiment description Highly-purified exosomes and shed microvesicles isolated from the human colon cancer cell line LIM1863 by sequential centrifugal ultrafiltration are biochemically and functionally distinct.
Authors Xu R, Greening DW, Rai A, Ji H, Simpson RJ.
Journal name Methods
Publication year 2015
Sample Colorectal cancer cells
Sample name LIM1863 - Sequential centrifugal ultrafiltration - Rep 2
Isolation/purification methods Differential centrifugation
Filtration
Sequential centrifugal ultrafiltration
Centrifugal concentration
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
Western blotting
 Protein-protein interactions for ABCG2
  Protein Interactor ExoCarta ID Identification method PubMed Species
No interactions are found.
 Pathways in which ABCG2 is involved
PathwayEvidenceSource
Abacavir transmembrane transport TAS Reactome
Iron uptake and transport TAS Reactome





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