Gene description for Pf4
Gene name platelet factor 4
Gene symbol Pf4
Other names/aliases Cxcl4
PF-4
Pf4a
RATPF4A
Species Rattus norvegicus
 Database cross references - Pf4
ExoCarta ExoCarta_360918
Entrez Gene 360918
UniProt P06765  
 Pf4 identified in exosomes derived from the following tissue/cell type
Reticulocytes 21828046    
 Gene ontology annotations for Pf4
Molecular Function
    molecular_function GO:0003674 ND
    CXCR3 chemokine receptor binding GO:0048248 ISS
    heparin binding GO:0008201 ISS
    CXCR chemokine receptor binding GO:0045236 IBA
    chemokine activity GO:0008009 IBA
Biological Process
    positive regulation of macrophage differentiation GO:0045651 ISO
    negative regulation of extrinsic apoptotic signaling pathway in absence of ligand GO:2001240 ISO
    chemokine-mediated signaling pathway GO:0070098 IBA
    protein complex assembly GO:0006461 IPI
    G-protein coupled receptor signaling pathway GO:0007186 IBA
    inflammatory response GO:0006954 IBA
    negative regulation of MHC class II biosynthetic process GO:0045347 ISO
    response to lipopolysaccharide GO:0032496 IBA
    positive regulation of leukocyte chemotaxis GO:0002690 IBA
    positive regulation of macrophage derived foam cell differentiation GO:0010744 ISO
    positive regulation of cAMP metabolic process GO:0030816 ISS
    cytokine-mediated signaling pathway GO:0019221 ISS
    positive regulation of gene expression GO:0010628 ISO
    negative regulation of angiogenesis GO:0016525 ISS
    positive regulation of transcription from RNA polymerase II promoter GO:0045944 ISS
    positive regulation of cAMP-mediated signaling GO:0043950 ISS
    leukocyte chemotaxis GO:0030595 ISS
    regulation of cell proliferation GO:0042127 ISS
    negative regulation of cytolysis GO:0045918 ISO
    platelet activation GO:0030168 ISS
    positive regulation of tumor necrosis factor production GO:0032760 ISO
    negative regulation of megakaryocyte differentiation GO:0045653 ISS
    immune response GO:0006955 IDA
Subcellular Localization
    vesicle GO:0031982 IDA
    platelet alpha granule GO:0031091 IDA
    extracellular space GO:0005615 IBA
    protein complex GO:0043234 IDA
 Experiment description of studies that identified Pf4 in exosomes
1
Experiment ID 97
ISEV standards
EM
EV Biophysical techniques
TSG101|HSP90|HSC70
EV Cytosolic markers
MHCI
EV Membrane markers
EV Negative markers
EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry [Orbitrap]
PubMed ID 21828046    
Organism Rattus norvegicus
Experiment description The proteo-lipidic composition of exosomes changes during reticulocyte maturation.
Authors Carayon K, Chaoui K, Ronzier E, Lazar I, Bertrand-Michel J, Roques V, Balor S, Terce F, Lopez A, Salome L, Joly E.
Journal name JBC
Publication year 2011
Sample Reticulocytes
Sample name Reticulocytes - D4 Rep 2
Isolation/purification methods Differential centrifugation
Ultracentrifugation
Sucrose density gradient
Flotation density 1.16-1.21 g/mL
Molecules identified in the study Protein
Lipids
Methods used in the study Mass spectrometry [QSTAR]
Mass spectrometry [Orbitrap]
Western blotting
 Protein-protein interactions for Pf4
  Protein Interactor ExoCarta ID Identification method PubMed Species
No interactions are found.



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