Gene description for PKP4
Gene name plakophilin 4
Gene symbol PKP4
Other names/aliases p0071
Species Homo sapiens
 Database cross references - PKP4
ExoCarta ExoCarta_8502
Entrez Gene 8502
HGNC 9026
MIM 604276
UniProt Q99569  
 PKP4 identified in exosomes derived from the following tissue/cell type
Hepatocellular carcinoma cells 26054723    
Hepatocellular carcinoma cells 26054723    
Ovarian cancer cells 23333927    
Ovarian cancer cells 23333927    
 Gene ontology annotations for PKP4
Molecular Function
    protein binding GO:0005515 IPI
Biological Process
    cell-cell signaling GO:0007267 NAS
    positive regulation of cytokinesis GO:0032467 IMP
    regulation of cell adhesion GO:0030155 NAS
    cell-cell junction assembly GO:0007043 ISS
    single organismal cell-cell adhesion GO:0016337 IEA
    positive regulation of GTPase activity GO:0043547 IDA
Subcellular Localization
    cell-cell contact zone GO:0044291 IDA
    desmosome GO:0030057 IDA
    midbody GO:0030496 IDA
    cytoplasm GO:0005737 IDA
    postsynaptic density GO:0014069 IEA
    spindle pole GO:0000922 IDA
    cell-cell junction GO:0005911 IDA
    plasma membrane GO:0005886 IDA
    spindle midzone GO:0051233 IDA
    perinuclear region of cytoplasm GO:0048471 IDA
    mitotic spindle GO:0072686 IDA
    cytoplasmic side of plasma membrane GO:0009898 IDA
    cytoskeleton GO:0005856 IDA
 Experiment description of studies that identified PKP4 in exosomes
1
Experiment ID 235
ISEV standards
EM
EV Biophysical techniques
TSG101|Alix|HSC70|GAPDH
EV Cytosolic markers
EV Membrane markers
HSP90B1
EV Negative markers
qNano
EV Particle analysis
Identified molecule mRNA
Identification method RNA Sequencing
PubMed ID 26054723    
Organism Homo sapiens
Experiment description Hepatocellular carcinoma-derived exosomes promote motility of immortalized hepatocyte through transfer of oncogenic proteins and RNAs
Authors He M, Qin H, Poon TC, Sze SC, Ding X, Co NN, Ngai SM, Chan TF, Wong N
Journal name Carcinogenesis
Publication year 2015
Sample Hepatocellular carcinoma cells
Sample name HKCI-8
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Sucrose density gradient
Flotation density 1.13-1.19 g/mL
Molecules identified in the study Protein
RNA
Methods used in the study Western blotting
Mass spectrometry
RT-PCR
RNA Sequencing
2
Experiment ID 236
ISEV standards
EM
EV Biophysical techniques
TSG101|Alix|HSC70|GAPDH
EV Cytosolic markers
EV Membrane markers
HSP90B1
EV Negative markers
qNano
EV Particle analysis
Identified molecule mRNA
Identification method RNA Sequencing
PubMed ID 26054723    
Organism Homo sapiens
Experiment description Hepatocellular carcinoma-derived exosomes promote motility of immortalized hepatocyte through transfer of oncogenic proteins and RNAs
Authors He M, Qin H, Poon TC, Sze SC, Ding X, Co NN, Ngai SM, Chan TF, Wong N
Journal name Carcinogenesis
Publication year 2015
Sample Hepatocellular carcinoma cells
Sample name MHCC97L
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Sucrose density gradient
Flotation density 1.13-1.19 g/mL
Molecules identified in the study Protein
RNA
Methods used in the study Western blotting
Mass spectrometry
RT-PCR
RNA Sequencing
3
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
4
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 PKP4
  Protein Interactor ExoCarta ID Identification method PubMed Species
1 CDH2 1000
Two-hybrid Homo sapiens
2 ERBB2IP 55914
Invivo Homo sapiens
Invivo Homo sapiens
Invitro Homo sapiens
Invitro Homo sapiens
Two-hybrid Homo sapiens
Two-hybrid Homo sapiens
3 CDH5  
Two-hybrid Homo sapiens
4 CDH1 999
Two-hybrid Homo sapiens
5 PSEN1  
Invivo Homo sapiens
Invitro Homo sapiens
Two-hybrid Homo sapiens
Affinity Capture-Western Homo sapiens
Reconstituted Complex Homo sapiens
Two-hybrid Homo sapiens
6 PDZK3  
Reconstituted Complex Homo sapiens
Affinity Capture-Western Homo sapiens
Affinity Capture-Western Homo sapiens
7 DSC3 1825
Two-hybrid Homo sapiens
8 DSP 1832
Two-hybrid Homo sapiens
View the network image/svg+xml
 Pathways in which PKP4 is involved
No pathways found





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