Gene description for PTPRK
Gene name protein tyrosine phosphatase, receptor type, K
Gene symbol PTPRK
Other names/aliases R-PTP-kappa
Species Homo sapiens
 Database cross references - PTPRK
ExoCarta ExoCarta_5796
Entrez Gene 5796
HGNC 9674
MIM 602545
UniProt Q15262  
 PTPRK identified in exosomes derived from the following tissue/cell type
Keratinocytes 19530224    
Keratinocytes 19530224    
Mesenchymal stem cells Unpublished / Not applicable
Ovarian cancer cells 23333927    
Ovarian cancer cells 23333927    
 Gene ontology annotations for PTPRK
Molecular Function
    beta-catenin binding GO:0008013 IPI
    protein binding GO:0005515 IPI
    protein kinase binding GO:0019901 IPI
    protein tyrosine phosphatase activity GO:0004725 IDA
    transmembrane receptor protein tyrosine phosphatase activity GO:0005001 NAS
    gamma-catenin binding GO:0045295 IPI
Biological Process
    cell migration GO:0016477 IMP
    negative regulation of transcription, DNA-templated GO:0045892 IDA
    negative regulation of cell cycle GO:0045786 IDA
    protein localization to cell surface GO:0034394 IDA
    negative regulation of cell proliferation GO:0008285 IDA
    negative regulation of cell migration GO:0030336 IDA
    focal adhesion assembly GO:0048041 IMP
    cellular response to reactive oxygen species GO:0034614 IDA
    transforming growth factor beta receptor signaling pathway GO:0007179 IDA
    negative regulation of keratinocyte proliferation GO:0010839 IDA
    cell adhesion GO:0007155 IMP
    protein dephosphorylation GO:0006470 IDA
    signal transduction GO:0007165 IDA
    peptidyl-tyrosine dephosphorylation GO:0035335 NAS
    cellular response to UV GO:0034644 IDA
Subcellular Localization
    axon GO:0030424 IEA
    integral component of plasma membrane GO:0005887 NAS
    neuronal cell body GO:0043025 IEA
    cell surface GO:0009986 IDA
    integral component of membrane GO:0016021 NAS
    leading edge membrane GO:0031256 IDA
    cell-cell junction GO:0005911 IDA
    adherens junction GO:0005912 IEA
    photoreceptor outer segment GO:0001750 IEA
    dendrite GO:0030425 IEA
 Experiment description of studies that identified PTPRK in exosomes
1
Experiment ID 189
ISEV standards
EM
EV Biophysical techniques
EV Cytosolic markers
EV Membrane markers
EV Negative markers
EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 19530224    
Organism Homo sapiens
Experiment description Profile of exosomes related proteins released by differentiated and undifferentiated human keratinocytes.
Authors Chavez-Muñoz C, Kilani RT, Ghahary A.
Journal name J Cell Physiol
Publication year 2009
Sample Keratinocytes
Sample name Keratinocytes - Differentiated
Isolation/purification methods Differential centrifugation
Filtration
Sucrose cushion
Filtration
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
2
Experiment ID 190
ISEV standards
EM
EV Biophysical techniques
HSC70
EV Cytosolic markers
EV Membrane markers
EV Negative markers
EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 19530224    
Organism Homo sapiens
Experiment description Profile of exosomes related proteins released by differentiated and undifferentiated human keratinocytes.
Authors Chavez-Muñoz C, Kilani RT, Ghahary A.
Journal name J Cell Physiol
Publication year 2009
Sample Keratinocytes
Sample name Keratinocytes - Undifferentiated
Isolation/purification methods Differential centrifugation
Filtration
Sucrose cushion
Filtration
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
3
Experiment ID 126
ISEV standards
EV Biophysical techniques
GAPDH
EV Cytosolic markers
EV Membrane markers
EV Negative markers
EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry [LTQ-FT Ultra]
PubMed ID Unpublished / Not applicable
Organism Homo sapiens
Experiment description Mesenchymal Stem Cell Exosomes: The Future MSC-based Therapy?
Authors Ruenn Chai Lai, Ronne Wee Yeh Yeo, Soon Sim Tan, Bin Zhang, Yijun Yin, Newman Siu Kwan Sze, Andre Choo, and Sai Kiang Lim
Journal name Mesenchymal Stem Cell Therapy
Publication year 2011
Sample Mesenchymal stem cells
Sample name huES9.E1
Isolation/purification methods HPLC
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Antobody array
Mass spectrometry
4
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
5
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 PTPRK
  Protein Interactor ExoCarta ID Identification method PubMed Species
1 PSMD11 5717
Two-hybrid Homo sapiens
2 TK1 7083
Two-hybrid Homo sapiens
3 JUP 3728
Invivo Homo sapiens
Invitro Homo sapiens
4 CTNNB1 1499
Invitro Homo sapiens
Invivo Homo sapiens
View the network image/svg+xml
 Pathways in which PTPRK is involved
No pathways found





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