Gene description for FKBP4
Gene name FK506 binding protein 4, 59kDa
Gene symbol FKBP4
Other names/aliases FKBP51
FKBP52
FKBP59
HBI
Hsp56
PPIase
p52
Species Homo sapiens
 Database cross references - FKBP4
ExoCarta ExoCarta_2288
Entrez Gene 2288
HGNC 3720
MIM 600611
UniProt Q02790  
 FKBP4 identified in exosomes derived from the following tissue/cell type
B cells 20458337    
B cells 20458337    
B cells 20458337    
Melanoma cells 25950383    
Melanoma cells 25950383    
Melanoma cells 25950383    
Neuroblastoma cells 25944692    
Ovarian cancer cells 23333927    
Ovarian cancer cells 23333927    
Thymus 23844026    
Urine 19056867    
 Gene ontology annotations for FKBP4
Molecular Function
    heat shock protein binding GO:0031072 IPI
    poly(A) RNA binding GO:0044822 IDA
    protein binding, bridging GO:0030674 TAS
    protein binding GO:0005515 IPI
    FK506 binding GO:0005528 TAS
    tau protein binding GO:0048156 IEA
    glucocorticoid receptor binding GO:0035259 IEA
    GTP binding GO:0005525 IEA
    peptidyl-prolyl cis-trans isomerase activity GO:0003755 IDA
    copper-dependent protein binding GO:0032767 IEA
    phosphoprotein binding GO:0051219 IEA
    ATP binding GO:0005524 IEA
Biological Process
    negative regulation of microtubule polymerization or depolymerization GO:0031111 ISS
    steroid hormone receptor complex assembly GO:0006463 IEA
    regulation of cellular response to heat GO:1900034 TAS
    male sex differentiation GO:0046661 IEA
    copper ion transport GO:0006825 IEA
    protein peptidyl-prolyl isomerization GO:0000413 IEA
    embryo implantation GO:0007566 IEA
    protein folding GO:0006457 TAS
    androgen receptor signaling pathway GO:0030521 IEA
    prostate gland development GO:0030850 IEA
    chaperone-mediated protein folding GO:0061077 IDA
    negative regulation of neuron projection development GO:0010977 ISS
    cellular response to heat GO:0034605 TAS
    protein complex localization GO:0031503 IEA
    negative regulation of microtubule polymerization GO:0031115 IEA
Subcellular Localization
    endoplasmic reticulum membrane GO:0005789 IBA
    neuronal cell body GO:0043025 IEA
    cytosol GO:0005829 ISS
    axonal growth cone GO:0044295 ISS
    microtubule GO:0005874 IEA
    extracellular exosome GO:0070062 IDA
    nucleoplasm GO:0005654 TAS
    perinuclear region of cytoplasm GO:0048471 IEA
    mitochondrion GO:0005739 IEA
    cytoplasm GO:0005737 IDA
 Experiment description of studies that identified FKBP4 in exosomes
1
Experiment ID 79
ISEV standards
✘ EV Biophysical techniques
✘ EV Cytosolic markers
✔
CD81|MHCII
EV Membrane markers
✘ EV Negative markers
✘ EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 20458337    
Organism Homo sapiens
Experiment description MHC class II-associated proteins in B-cell exosomes and potential functional implications for exosome biogenesis - Sample 1
Authors Buschow SI, van Balkom BW, Aalberts M, Heck AJ, Wauben M, Stoorvogel W.
Journal name ICB
Publication year 2010
Sample B cells
Sample name RN (HLA-DR15)
Isolation/purification methods Differential centrifugation
Sucrose density gradient
Immunobeads (MHC Class II)
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry [FT-ICR]
Western blotting
2
Experiment ID 80
ISEV standards
✘ EV Biophysical techniques
✘ EV Cytosolic markers
✔
CD81|MHCII
EV Membrane markers
✘ EV Negative markers
✘ EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 20458337    
Organism Homo sapiens
Experiment description MHC class II-associated proteins in B-cell exosomes and potential functional implications for exosome biogenesis -Sample 2
Authors Buschow SI, van Balkom BW, Aalberts M, Heck AJ, Wauben M, Stoorvogel W.
Journal name ICB
Publication year 2010
Sample B cells
Sample name RN (HLA-DR15)
Isolation/purification methods Differential centrifugation
Sucrose density gradient
Immunobeads (MHC Class II)
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry [FT-ICR]
Western blotting
3
Experiment ID 81
ISEV standards
✘ EV Biophysical techniques
✘ EV Cytosolic markers
✔
CD81|MHCII
EV Membrane markers
✘ EV Negative markers
✘ EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 20458337    
Organism Homo sapiens
Experiment description MHC class II-associated proteins in B-cell exosomes and potential functional implications for exosome biogenesis - Sample 3
Authors Buschow SI, van Balkom BW, Aalberts M, Heck AJ, Wauben M, Stoorvogel W.
Journal name ICB
Publication year 2010
Sample B cells
Sample name RN (HLA-DR15)
Isolation/purification methods Differential centrifugation
Sucrose density gradient
Immunobeads (MHC Class II)
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry [FT-ICR]
Western blotting
4
Experiment ID 254
ISEV standards
✔
EM
EV Biophysical techniques
✔
TSG101
EV Cytosolic markers
✔
FLOT1|CD81
EV Membrane markers
✘ EV Negative markers
✔
NTA
EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 25950383    
Organism Homo sapiens
Experiment description Proteome characterization of melanoma exosomes reveals a specific signature for metastatic cell lines
Authors Lazar I, Clement E, Ducoux-Petit M, Denat L, Soldan V, Dauvillier S, Balor S4, Burlet-Schiltz O1, Larue L, Muller C Nieto L
Journal name Pigment Cell Melanoma Res
Publication year 2015
Sample Melanoma cells
Sample name MNT-1
Isolation/purification methods Differential centrifugation
Unltracentrifugation
Sucrose density gradient
Flotation density 1.13 - 1.19 g/mL
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectrometry
5
Experiment ID 257
ISEV standards
✔
EM
EV Biophysical techniques
✔
TSG101
EV Cytosolic markers
✔
FLOT1
EV Membrane markers
✘ EV Negative markers
✔
NTA
EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 25950383    
Organism Homo sapiens
Experiment description Proteome characterization of melanoma exosomes reveals a specific signature for metastatic cell lines
Authors Lazar I, Clement E, Ducoux-Petit M, Denat L, Soldan V, Dauvillier S, Balor S4, Burlet-Schiltz O1, Larue L, Muller C Nieto L
Journal name Pigment Cell Melanoma Res
Publication year 2015
Sample Melanoma cells
Sample name Daju
Isolation/purification methods Differential centrifugation
Unltracentrifugation
Sucrose density gradient
Flotation density 1.13 - 1.19 g/mL
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectrometry
6
Experiment ID 260
ISEV standards
✔
EM
EV Biophysical techniques
✔
TSG101
EV Cytosolic markers
✔
FLOT1|CD81
EV Membrane markers
✘ EV Negative markers
✔
NTA
EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 25950383    
Organism Homo sapiens
Experiment description Proteome characterization of melanoma exosomes reveals a specific signature for metastatic cell lines
Authors Lazar I, Clement E, Ducoux-Petit M, Denat L, Soldan V, Dauvillier S, Balor S4, Burlet-Schiltz O1, Larue L, Muller C Nieto L
Journal name Pigment Cell Melanoma Res
Publication year 2015
Sample Melanoma cells
Sample name 1205Lu
Isolation/purification methods Differential centrifugation
Unltracentrifugation
Sucrose density gradient
Flotation density 1.13 - 1.19 g/mL
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectrometry
7
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
8
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
9
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
10
Experiment ID 217
ISEV standards
✔
EM
EV Biophysical techniques
✔
TSG101
EV Cytosolic markers
✔
CD81|CD9|CD63
EV Membrane markers
✘ EV Negative markers
✔
NTA
EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 23844026    
Organism Homo sapiens
Experiment description Characterization of human thymic exosomes.
Authors Skogberg G, Gudmundsdottir J, van der Post S, Sandstrom K, Bruhn S, Benson M, Mincheva-Nilsson L, Baranov V, Telemo E, Ekwall O.
Journal name PLoS One
Publication year 2013
Sample Thymus
Sample name Normal-Thymus
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
11
Experiment ID 63
ISEV standards
✘ EV Biophysical techniques
✘ EV Cytosolic markers
✔
AQP2
EV Membrane markers
✘ EV Negative markers
✘ EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 19056867    
Organism Homo sapiens
Experiment description Large-scale proteomics and phosphoproteomics of urinary exosomes.
Authors Gonzales PA, Pisitkun T, Hoffert JD, Tchapyjnikov D, Star RA, Kleta R, Wang NS, Knepper MA
Journal name JASN
Publication year 2009
Sample Urine
Sample name Urine - Normal
Isolation/purification methods Differential centrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry [LTQ]
Western blotting
 Protein-protein interactions for FKBP4
  Protein Interactor ExoCarta ID Identification method PubMed Species
1 PHYH  
Reconstituted Complex Homo sapiens
Affinity Capture-MS Homo sapiens
Two-hybrid Homo sapiens
Reconstituted Complex Homo sapiens
2 ESR1  
Reconstituted Complex Homo sapiens
3 LOXHD1  
Affinity Capture-MS Homo sapiens
4 NR3C2  
Invitro Homo sapiens
5 NR3C1 2908
Invitro Homo sapiens
Affinity Capture-MS Homo sapiens
6 IRF4  
Affinity Capture-MS Homo sapiens
Affinity Capture-Western Homo sapiens
7 FKBP4 2288
Affinity Capture-MS Homo sapiens
Affinity Capture-MS Homo sapiens
8 SAE1 10055
Affinity Capture-MS Homo sapiens
9 HSF1  
Reconstituted Complex Homo sapiens
10 FKBP1A 2280
Invitro Homo sapiens
Two-hybrid Homo sapiens
Affinity Capture-MS Homo sapiens
11 GLMN 11146
Reconstituted Complex Homo sapiens
Two-hybrid Homo sapiens
12 FES 2242
Reconstituted Complex Homo sapiens
View the network image/svg+xml
 Pathways in which FKBP4 is involved
PathwayEvidenceSource
Attenuation phase TAS Reactome





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