Gene description for IPO4
Gene name importin 4
Gene symbol IPO4
Other names/aliases Imp4
Species Homo sapiens
 Database cross references - IPO4
ExoCarta ExoCarta_79711
Entrez Gene 79711
HGNC 19426
UniProt Q8TEX9  
 IPO4 identified in exosomes derived from the following tissue/cell type
Neuroblastoma cells 25944692    
Ovarian cancer cells 23333927    
Ovarian cancer cells 23333927    
 Gene ontology annotations for IPO4
Molecular Function
    protein binding GO:0005515 IPI
    Ran GTPase binding GO:0008536 IEA
Biological Process
    DNA replication-dependent nucleosome assembly GO:0006335 IDA
    intracellular protein transport GO:0006886 IEA
    DNA replication-independent nucleosome assembly GO:0006336 IDA
    protein transport GO:0015031 NAS
Subcellular Localization
    nuclear chromatin GO:0000790 IDA
    membrane GO:0016020 IDA
    cytoplasm GO:0005737 IEA
    nuclear pore GO:0005643 NAS
    protein complex GO:0043234 IDA
 Experiment description of studies that identified IPO4 in exosomes
1
Experiment ID 224
ISEV standards
EM|AFM
EV Biophysical techniques
Alix|TSG101
EV Cytosolic markers
CD63|CD81
EV Membrane markers
GOLGA2
EV Negative markers
EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 25944692    
Organism Homo sapiens
Experiment description Proteogenomic analysis reveals exosomes are more oncogenic than ectosomes
Authors Keerthikumar S, Gangoda L, Liem M, Fonseka P, Atukorala I, Ozcitti C, Mechler A, Adda CG, Ang CS, Mathivanan S
Journal name Oncotarget
Publication year 2015
Sample Neuroblastoma cells
Sample name SH-SY5Y
Isolation/purification methods Differential centrifugation
Ultracentrifugation
OptiPrep density gradient
Flotation density 1.10 g/mL
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
Western blotting
2
Experiment ID 211
ISEV standards
EM
EV Biophysical techniques
TSG101|Alix
EV Cytosolic markers
EpCAM|TFRC
EV Membrane markers
cytochrome c|GOLGA2
EV Negative markers
EV 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
3
Experiment ID 212
ISEV standards
CEM
EV Biophysical techniques
TSG101|Alix
EV Cytosolic markers
EpCAM|TFRC
EV Membrane markers
Cytochrome C|GOLGA2
EV Negative markers
EV 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
 Protein-protein interactions for IPO4
  Protein Interactor ExoCarta ID Identification method PubMed Species
1 BRF2  
Affinity Capture-MS Homo sapiens
2 NEK6 10783
Affinity Capture-MS Homo sapiens
3 PHLDA3  
Affinity Capture-MS Homo sapiens
4 PTP4A3  
Affinity Capture-MS Homo sapiens
5 GSTK1 373156
Affinity Capture-MS Homo sapiens
6 ASF1B  
Affinity Capture-MS Homo sapiens
View the network image/svg+xml
 Pathways in which IPO4 is involved
No pathways found





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