Gene description for DHFR
Gene name dihydrofolate reductase
Gene symbol DHFR
Other names/aliases DHFRP1
DYR
Species Homo sapiens
 Database cross references - DHFR
ExoCarta ExoCarta_1719
Entrez Gene 1719
HGNC 2861
MIM 126060
UniProt P00374  
 DHFR identified in exosomes derived from the following tissue/cell type
Colorectal cancer cells 23161513    
Colorectal cancer cells 23161513    
Colorectal cancer cells 23161513    
Thymus 23844026    
 Gene ontology annotations for DHFR
Molecular Function
    dihydrofolate reductase activity GO:0004146 NAS
    NADP binding GO:0050661 IEA
    mRNA binding GO:0003729 IDA
    drug binding GO:0008144 IDA
Biological Process
    nucleotide biosynthetic process GO:0009165 IEA
    response to methotrexate GO:0031427 IEA
    regulation of transcription involved in G1/S transition of mitotic cell cycle GO:0000083 TAS
    one-carbon metabolic process GO:0006730 IEA
    tetrahydrofolate metabolic process GO:0046653 IDA
    vitamin metabolic process GO:0006766 TAS
    G1/S transition of mitotic cell cycle GO:0000082 TAS
    regulation of nitric-oxide synthase activity GO:0050999 TAS
    water-soluble vitamin metabolic process GO:0006767 TAS
    glycine biosynthetic process GO:0006545 IEA
    small molecule metabolic process GO:0044281 TAS
    oxidation-reduction process GO:0055114 IEA
    nitric oxide metabolic process GO:0046209 TAS
    tetrahydrofolate biosynthetic process GO:0046654 IEA
    folic acid metabolic process GO:0046655 TAS
    mitotic cell cycle GO:0000278 TAS
Subcellular Localization
    cellular_component GO:0005575 ND
    cytosol GO:0005829 TAS
    nucleoplasm GO:0005654 TAS
 Experiment description of studies that identified DHFR in exosomes
1
Experiment ID 207
ISEV standards
✔
EM
EV Biophysical techniques
✔
TSG101|HSP70
EV Cytosolic markers
✔
FLOT1
EV Membrane markers
✔
VDAC
EV Negative markers
✔
NTA
EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 23161513    
Organism Homo sapiens
Experiment description Proteomic analysis of exosomes from mutant KRAS colon cancer cells identifies intercellular transfer of mutant KRAS.
Authors Demory Beckler M, Higginbotham JN, Franklin JL, Ham AJ, Halvey PJ, Imasuen IE, Whitwell C, Li M, Liebler DC, Coffey RJ.
Journal name Mol Cell Proteomics
Publication year 2012
Sample Colorectal cancer cells
Sample name DKO-1
Isolation/purification methods Differential centrifugation
Filtration
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
2
Experiment ID 208
ISEV standards
✔
EM
EV Biophysical techniques
✔
TSG101|HSP70
EV Cytosolic markers
✔
FLOT1
EV Membrane markers
✔
VDAC
EV Negative markers
✔
NTA
EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 23161513    
Organism Homo sapiens
Experiment description Proteomic analysis of exosomes from mutant KRAS colon cancer cells identifies intercellular transfer of mutant KRAS.
Authors Demory Beckler M, Higginbotham JN, Franklin JL, Ham AJ, Halvey PJ, Imasuen IE, Whitwell C, Li M, Liebler DC, Coffey RJ.
Journal name Mol Cell Proteomics
Publication year 2012
Sample Colorectal cancer cells
Sample name Dks-8
Isolation/purification methods Differential centrifugation
Filtration
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
3
Experiment ID 209
ISEV standards
✘ EV Biophysical techniques
✔
TSG101|HSP70
EV Cytosolic markers
✔
FLOT1
EV Membrane markers
✔
VDAC
EV Negative markers
✔
NTA
EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 23161513    
Organism Homo sapiens
Experiment description Proteomic analysis of exosomes from mutant KRAS colon cancer cells identifies intercellular transfer of mutant KRAS.
Authors Demory Beckler M, Higginbotham JN, Franklin JL, Ham AJ, Halvey PJ, Imasuen IE, Whitwell C, Li M, Liebler DC, Coffey RJ.
Journal name Mol Cell Proteomics
Publication year 2012
Sample Colorectal cancer cells
Sample name DLD-1
Isolation/purification methods Differential centrifugation
Filtration
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
4
Experiment ID 217
ISEV standards
✔
EM
EV Biophysical techniques
✔
TSG101
EV Cytosolic markers
✔
CD81|CD9|CD63
EV Membrane markers
✘ EV Negative markers
✔
NTA
EV 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
 Protein-protein interactions for DHFR
  Protein Interactor ExoCarta ID Identification method PubMed Species
1 THBS1 7057
Reconstituted Complex Homo sapiens
2 TOMM20 9804
Affinity Capture-MS Homo sapiens
3 FKBP1A 2280
Biochemical Activity Homo sapiens
Affinity Capture-MS Homo sapiens
4 HSPD1 3329
Invitro Homo sapiens
Affinity Capture-MS Homo sapiens
Reconstituted Complex Homo sapiens
Co-purification Homo sapiens
5 DHFR 1719
Affinity Capture-MS Homo sapiens
Affinity Capture-MS Homo sapiens
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