Gene description for PLEK
Gene name pleckstrin
Gene symbol PLEK
Other names/aliases P47
Species Homo sapiens
 Database cross references - PLEK
ExoCarta ExoCarta_5341
Entrez Gene 5341
HGNC 9070
MIM 173570
UniProt P08567  
 PLEK identified in exosomes derived from the following tissue/cell type
Hepatocellular carcinoma cells 26054723    
Ovarian cancer cells 23333927    
Ovarian cancer cells 23333927    
Platelets 25332113    
Platelets 25332113    
Platelets 25332113    
 Gene ontology annotations for PLEK
Molecular Function
    protein homodimerization activity GO:0042803 IDA
    phosphatidylinositol-3,4-bisphosphate binding GO:0043325 IDA
    protein kinase C binding GO:0005080 IDA
    protein binding GO:0005515 IPI
Biological Process
    negative regulation of calcium-mediated signaling GO:0050849 NAS
    positive regulation of actin filament bundle assembly GO:0032233 IDA
    positive regulation of platelet activation GO:0010572 ISS
    vesicle docking involved in exocytosis GO:0006904 ISS
    actin cytoskeleton reorganization GO:0031532 IDA
    regulation of cell diameter GO:0060305 IDA
    thrombin receptor signaling pathway GO:0070493 IDA
    blood coagulation GO:0007596 TAS
    protein secretion by platelet GO:0070560 ISS
    platelet degranulation GO:0002576 TAS
    positive regulation of inositol-polyphosphate 5-phosphatase activity GO:0010925 IDA
    protein kinase C signaling GO:0070528 ISS
    positive regulation of actin filament depolymerization GO:0030836 IDA
    phospholipase C-inhibiting G-protein coupled receptor signaling pathway GO:0030845 IDA
    positive regulation of integrin activation GO:0033625 ISS
    ruffle organization GO:0031529 IDA
    negative regulation of G-protein coupled receptor protein signaling pathway GO:0045744 IDA
    cell projection organization GO:0030030 IDA
    platelet activation GO:0030168 TAS
    cortical actin cytoskeleton organization GO:0030866 IDA
    platelet aggregation GO:0070527 ISS
    hematopoietic progenitor cell differentiation GO:0002244 IEP
    integrin-mediated signaling pathway GO:0007229 IDA
    phosphatidylinositol metabolic process GO:0046488 IDA
    negative regulation of inositol phosphate biosynthetic process GO:0010920 IDA
Subcellular Localization
    cytoplasm GO:0005737 IDA
    cytosol GO:0005829 TAS
    ruffle membrane GO:0032587 IDA
    extracellular region GO:0005576 TAS
    membrane GO:0016020 IDA
 Experiment description of studies that identified PLEK 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 protein
Identification method Mass spectrometry
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 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
4
Experiment ID 231
ISEV standards
✘ EV Biophysical techniques
✔
Alix
EV Cytosolic markers
✔
CD63|CD9
EV Membrane markers
✘ EV Negative markers
✔
NTA
EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 25332113    
Organism Homo sapiens
Experiment description Lipidomic and proteomic characterization of platelet extracellular vesicle subfractions from senescent platelets
Authors Pienimaeki-Roemer A, Kuhlmann K, Bottcher A, Konovalova T, Black A, Orso E, Liebisch G, Ahrens M, Eisenacher M, Meyer HE, Schmitz G.
Journal name Transfusion
Publication year 2015
Sample Platelets
Sample name PL-Exs - Rep 1
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Optiprep density gradient
Flotation density 1.12-1.15 g/mL
Molecules identified in the study Protein
Lipids
Methods used in the study Western blotting
Mass spectrometry
5
Experiment ID 232
ISEV standards
✘ EV Biophysical techniques
✘ EV Cytosolic markers
✘ EV Membrane markers
✘ EV Negative markers
✘ EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 25332113    
Organism Homo sapiens
Experiment description Lipidomic and proteomic characterization of platelet extracellular vesicle subfractions from senescent platelets
Authors Pienimaeki-Roemer A, Kuhlmann K, Bottcher A, Konovalova T, Black A, Orso E, Liebisch G, Ahrens M, Eisenacher M, Meyer HE, Schmitz G.
Journal name Transfusion
Publication year 2015
Sample Platelets
Sample name PL-Exs - Rep 2
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Optiprep density gradient
Flotation density 1.12-1.15 g/mL
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
6
Experiment ID 233
ISEV standards
✘ EV Biophysical techniques
✘ EV Cytosolic markers
✘ EV Membrane markers
✘ EV Negative markers
✘ EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 25332113    
Organism Homo sapiens
Experiment description Lipidomic and proteomic characterization of platelet extracellular vesicle subfractions from senescent platelets
Authors Pienimaeki-Roemer A, Kuhlmann K, Bottcher A, Konovalova T, Black A, Orso E, Liebisch G, Ahrens M, Eisenacher M, Meyer HE, Schmitz G.
Journal name Transfusion
Publication year 2015
Sample Platelets
Sample name PL-Exs - Rep 3
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Optiprep density gradient
Flotation density 1.12-1.15 g/mL
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
 Protein-protein interactions for PLEK
  Protein Interactor ExoCarta ID Identification method PubMed Species
No interactions are found.
 Pathways in which PLEK is involved
PathwayEvidenceSource
Platelet degranulation TAS Reactome





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