Gene description for HLA-E
Gene name major histocompatibility complex, class I, E
Gene symbol HLA-E
Other names/aliases EA1.2
EA2.1
HLA-6.2
MHC
QA1
Species Homo sapiens
 Database cross references - HLA-E
ExoCarta ExoCarta_3133
Vesiclepedia VP_3133
Entrez Gene 3133
HGNC 4962
MIM 143010
UniProt P13747  
 HLA-E identified in exosomes derived from the following tissue/cell type
B cells 20458337    
B cells 20458337    
B cells 20458337    
Bone marrow cells 15908444    
Bronchoalveolar lavage fluid 14582906    
Colorectal cancer cells 19837982    
Colorectal cancer cells 15940614    
Dendritic cells 14582906    
Malignant ascites 12147373    
Malignant pleural effusions 12147373    
Mast cells 15908444    
Melanoma cells 11231627    
Mesothelioma cells 15111327    
Neuroblastoma cells 25944692    
Plasma 15908444    
Platelets 25332113    
Platelets 25332113    
Platelets 25332113    
Retinal pigment epithelial cells 35333565    
Retinal pigment epithelial cells 35333565    
T cells 11907077    
Urine 19056867    
 Gene ontology annotations for HLA-E
Molecular Function
    natural killer cell lectin-like receptor binding GO:0046703 IPI
    MHC class I protein binding GO:0042288 IDA
    beta-2-microglobulin binding GO:0030881 IMP
    peptide antigen binding GO:0042605 IMP
    receptor binding GO:0005102 IPI
Biological Process
    positive regulation of natural killer cell mediated immunity GO:0002717 IDA
    protection from natural killer cell mediated cytotoxicity GO:0042270 IDA
    positive regulation of TRAIL production GO:0032759 IDA
    defense response to Gram-positive bacterium GO:0050830 IDA
    positive regulation of interleukin-13 production GO:0032736 IDA
    regulation of natural killer cell mediated immunity GO:0002715 IDA
    antigen processing and presentation of exogenous peptide antigen via MHC class I, TAP-dependent GO:0002479 TAS
    positive regulation of CD8-positive, alpha-beta T cell proliferation GO:2000566 IDA
    antigen processing and presentation of endogenous peptide antigen via MHC class Ib GO:0002476 IDA
    antigen processing and presentation of exogenous peptide antigen via MHC class I, TAP-independent GO:0002480 TAS
    adaptive immune response GO:0002250 IDA
    innate immune response GO:0045087 TAS
    cytokine-mediated signaling pathway GO:0019221 TAS
    positive regulation of immunoglobulin secretion GO:0051024 IDA
    positive regulation of interleukin-4 production GO:0032753 IDA
    interferon-gamma-mediated signaling pathway GO:0060333 TAS
    type I interferon signaling pathway GO:0060337 TAS
    antigen processing and presentation of peptide antigen via MHC class I GO:0002474 TAS
    CD8-positive, alpha-beta T cell activation GO:0036037 IDA
    antigen processing and presentation of exogenous peptide antigen via MHC class I GO:0042590 TAS
    positive regulation of T cell mediated cytotoxicity GO:0001916 IDA
    antibacterial humoral response GO:0019731 IDA
    positive regulation of tumor necrosis factor production GO:0032760 IDA
    regulation of immune response GO:0050776 TAS
Subcellular Localization
    plasma membrane GO:0005886 TAS
    MHC class I protein complex GO:0042612 IDA
    extracellular exosome GO:0070062 IDA
    MHC class Ib protein complex GO:0032398 IDA
    ER to Golgi transport vesicle membrane GO:0012507 TAS
    cell surface GO:0009986 IDA
    Golgi membrane GO:0000139 TAS
    integral component of lumenal side of endoplasmic reticulum membrane GO:0071556 TAS
    phagocytic vesicle membrane GO:0030670 TAS
    early endosome membrane GO:0031901 TAS
 Experiment description of studies that identified HLA-E in exosomes
1
Experiment ID 79
MISEV standards
✘ EV Biophysical techniques
✔
CD81|MHCII
EV Enriched 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
MISEV standards
✘ EV Biophysical techniques
✔
CD81|MHCII
EV Enriched 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
MISEV standards
✘ EV Biophysical techniques
✔
CD81|MHCII
EV Enriched 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 42
MISEV standards
✔
EM
EV Biophysical techniques
✔
CD86|TFRC|LAMP2|ITGA2B|CD63|CD9|MHCI|CD81
EV Enriched markers
✔
CANX
EV Negative markers
✘ EV Particle analysis
Identified molecule protein
Identification method Western blotting
PubMed ID 15908444    
Organism Homo sapiens
Experiment description Exosomal-like vesicles are present in human blood plasma.
Authors Caby MP, Lankar D, Vincendeau-Scherrer C, Raposo G, Bonnerot C
Journal name INTIMM
Publication year 2005
Sample Bone marrow cells
Sample name PBMC
Isolation/purification methods Differential centrifugation
Filtration
Sucrose density gradient
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
5
Experiment ID 49
MISEV standards
✔
EM|IEM
EV Biophysical techniques
✔
CD63|CD86
EV Enriched markers
✘ EV Negative markers
✘ EV Particle analysis
Identified molecule protein
Identification method FACS
PubMed ID 14582906    
Organism Homo sapiens
Experiment description Exosomes with major histocompatibility complex class II and co-stimulatory molecules are present in human BAL fluid.
Authors Admyre C, Grunewald J, Thyberg J, Gripenback S, Tornling G, Eklund A, Scheynius A, Gabrielsson S
Journal name ERJ
Publication year 2003
Sample Bronchoalveolar lavage fluid
Sample name Bronchoalveolar lavage fluid
Isolation/purification methods Differential centrifugation
Immunobeads (EpCAM)
Flotation density -
Molecules identified in the study Protein
Methods used in the study FACS
Immunoelectron Microscopy
6
Experiment ID 21
MISEV standards
✔
EM|IEM
EV Biophysical techniques
✔
Alix|TSG101|HSP70|CD63
EV Enriched markers
✘ EV Negative markers
✘ EV Particle analysis
Identified molecule protein
Identification method
Mass spectrometry   
PubMed ID 19837982    
Organism Homo sapiens
Experiment description Proteomic and bioinformatic analysis of immunoaffinity-purified exosomes derived from the human colon tumor cell line LIM1215.
Authors Suresh Mathivanan, Justin W.E. Lim, Bow J. Tauro, Hong Ji, Robert L. Moritz and Richard J. Simpson
Journal name MCP
Publication year 2009
Sample Colorectal cancer cells
Sample name LIM1215
Isolation/purification methods Filtration
Ultracentrifugation
Sucrose density gradient
Flotation density 1.10-1.12 g/mL
Molecules identified in the study Protein
Methods used in the study Mass spectrometry [Orbitrap]
Western blotting
7
Experiment ID 22
MISEV standards
✘ EV Biophysical techniques
✔
CD63
EV Enriched markers
✘ EV Negative markers
✘ EV Particle analysis
Identified molecule protein
Identification method FACS
PubMed ID 15940614    
Organism Homo sapiens
Experiment description Human colorectal cancer cells induce T-cell death through release of proapoptotic microvesicles: role in immune escape.
Authors Huber V, Fais S, Iero M, Lugini L, Canese P, Squarcina P, Zaccheddu A, Colone M, Arancia G, Gentile M, Seregni E, Valenti R, Ballabio G, Belli F, Leo E, Parmiani G, Rivoltini L.
Journal name GASTRO
Publication year 2005
Sample Colorectal cancer cells
Sample name SW403
1869col
CRC28462
Isolation/purification methods Differential centrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Immunoelectron Microscopy
FACS
8
Experiment ID 50
MISEV standards
✔
EM|IEM
EV Biophysical techniques
✔
CD63|CD87
EV Enriched markers
✘ EV Negative markers
✘ EV Particle analysis
Identified molecule protein
Identification method FACS
PubMed ID 14582906    
Organism Homo sapiens
Experiment description Exosomes with major histocompatibility complex class II and co-stimulatory molecules are present in human BAL fluid.
Authors Admyre C, Grunewald J, Thyberg J, Gripenback S, Tornling G, Eklund A, Scheynius A, Gabrielsson S
Journal name ERJ
Publication year 2003
Sample Dendritic cells
Sample name Monocyte-derived dendritic cells
Isolation/purification methods Differential centrifugation
Immunobeads (EpCAM)
Flotation density -
Molecules identified in the study Protein
Methods used in the study FACS
Immunoelectron Microscopy
9
Experiment ID 56
MISEV standards
✔
EM
EV Biophysical techniques
✔
HSC70|MHCI|MHCII
EV Enriched markers
✘ EV Negative markers
✘ EV Particle analysis
Identified molecule protein
Identification method Western blotting
PubMed ID 12147373    
Organism Homo sapiens
Experiment description Malignant effusions and immunogenic tumour-derived exosomes.
Authors Andre F, Schartz NE, Movassagh M, Flament C, Pautier P, Morice P, Pomel C, Lhomme C, Escudier B, Le Chevalier T, Tursz T, Amigorena S, Raposo G, Angevin E, Zitvogel L
Journal name LANCET
Publication year 2002
Sample Malignant ascites
Sample name Malignant ascites
Isolation/purification methods Differential centrifugation
Sucrose density gradient
Flotation density 1.14-1.18 g/mL
Molecules identified in the study Protein
Methods used in the study Western blotting
10
Experiment ID 55
MISEV standards
✘ EV Biophysical techniques
✘ EV Enriched markers
✘ EV Negative markers
✘ EV Particle analysis
Identified molecule protein
Identification method Immunoelectron Microscopy
PubMed ID 12147373    
Organism Homo sapiens
Experiment description Malignant effusions and immunogenic tumour-derived exosomes.
Authors Andre F, Schartz NE, Movassagh M, Flament C, Pautier P, Morice P, Pomel C, Lhomme C, Escudier B, Le Chevalier T, Tursz T, Amigorena S, Raposo G, Angevin E, Zitvogel L
Journal name LANCET
Publication year 2002
Sample Malignant pleural effusions
Sample name Malignant pleural effusions
Isolation/purification methods Differential centrifugation
Sucrose density gradient
Flotation density 1.14-1.18 g/mL
Molecules identified in the study Protein
Methods used in the study Western blotting
11
Experiment ID 41
MISEV standards
✔
EM
EV Biophysical techniques
✔
CD63|MHCI|CD9|CD81|TFRC|LAMP2
EV Enriched markers
✔
CANX
EV Negative markers
✘ EV Particle analysis
Identified molecule protein
Identification method Western blotting
PubMed ID 15908444    
Organism Homo sapiens
Experiment description Exosomal-like vesicles are present in human blood plasma.
Authors Caby MP, Lankar D, Vincendeau-Scherrer C, Raposo G, Bonnerot C
Journal name INTIMM
Publication year 2005
Sample Mast cells
Sample name HMC-1
Isolation/purification methods Differential centrifugation
Filtration
Sucrose density gradient
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
FACS
Immunoelectron Microscopy
12
Experiment ID 24
MISEV standards
✔
EM
EV Biophysical techniques
✔
HSC70|MHCI
EV Enriched markers
✔
HSP90B1
EV Negative markers
✘ EV Particle analysis
Identified molecule protein
Identification method Western blotting
PubMed ID 11231627    
Organism Homo sapiens
Experiment description Tumor-derived exosomes are a source of shared tumor rejection antigens for CTL cross-priming.
Authors Wolfers J, Lozier A, Raposo G, Regnault A, Thery C, Masurier C, Flament C, Pouzieux S, Faure F, Tursz T, Angevin E, Amigorena S, Zitvogel L
Journal name NM
Publication year 2001
Sample Melanoma cells
Sample name Fon
Mel-888
Isolation/purification methods Differential centrifugation
Sucrose density gradient
Flotation density 1.14 g/mL
Molecules identified in the study Protein
Methods used in the study Western blotting
13
Experiment ID 25
MISEV standards
✔
IEM
EV Biophysical techniques
✔
HSP90|beta-tubulin
EV Enriched markers
✘ EV Negative markers
✘ EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 15111327    
Organism Homo sapiens
Experiment description Proteomic analysis of exosomes secreted by human mesothelioma cells.
Authors Hegmans JP, Bard MP, Hemmes A, Luider TM, Kleijmeer MJ, Prins JB, Zitvogel L, Burgers SA, Hoogsteden HC, Lambrecht BN.
Journal name AJP
Publication year 2004
Sample Mesothelioma cells
Sample name PMR-MM7
PMR-MM8
Isolation/purification methods Differential centrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry [MALDI TOF]
Western blotting
14
Experiment ID 224
MISEV standards
✔
EM|AFM
EV Biophysical techniques
✔
Alix|TSG101|CD63|CD81
EV Enriched 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
15
Experiment ID 40
MISEV standards
✔
EM|IEM
EV Biophysical techniques
✔
CD63|CD9|MHCII|TFRC|LAMP2|ITGA2B
EV Enriched markers
✔
CANX
EV Negative markers
✘ EV Particle analysis
Identified molecule protein
Identification method Western blotting
PubMed ID 15908444    
Organism Homo sapiens
Experiment description Exosomal-like vesicles are present in human blood plasma.
Authors Caby MP, Lankar D, Vincendeau-Scherrer C, Raposo G, Bonnerot C
Journal name INTIMM
Publication year 2005
Sample Plasma
Sample name Plasma - Normal
Isolation/purification methods Differential centrifugation
Filtration
Sucrose density gradient
Flotation density 1.15-1.27 g/mL
Molecules identified in the study Protein
Methods used in the study Western blotting
FACS
Immunoelectron Microscopy
16
Experiment ID 231
MISEV standards
✘ EV Biophysical techniques
✔
Alix|CD63|CD9
EV Enriched 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
17
Experiment ID 232
MISEV standards
✘ EV Biophysical techniques
✘ EV Enriched 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
18
Experiment ID 233
MISEV standards
✘ EV Biophysical techniques
✘ EV Enriched 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
19
Experiment ID 834
MISEV standards
✔
EM
EV Biophysical techniques
✔
LAMP2|CD63|FLOT1|ITGA2B|ICAM1|CD9|CD151|TFRC|RAB5A|GAPDH|AQP1|TSG101
EV Enriched markers
✔
CANX
EV Negative markers
✔
NTA
EV Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 35333565    
Organism Homo sapiens
Experiment description LAMP2A regulates the loading of proteins into exosomes
Authors Ferreira JV, da Rosa Soares A, Ramalho J, Máximo Carvalho C, Cardoso MH, Pintado P, Carvalho AS, Beck HC, Matthiesen R, Zuzarte M, Girão H, van Niel G, Pereira P
Journal name Sci Adv
Publication year 2022
Sample Retinal pigment epithelial cells
Sample name ARPE-19
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectrometry
20
Experiment ID 835
MISEV standards
✔
EM
EV Biophysical techniques
✔
CD63|FLOT1|ITGA2B|ICAM1|CD9|CD151|TFRC|RAB5A|GAPDH|AQP1|TSG101
EV Enriched markers
✔
CANX
EV Negative markers
✔
NTA
EV Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 35333565    
Organism Homo sapiens
Experiment description LAMP2A regulates the loading of proteins into exosomes
Authors Ferreira JV, da Rosa Soares A, Ramalho J, Máximo Carvalho C, Cardoso MH, Pintado P, Carvalho AS, Beck HC, Matthiesen R, Zuzarte M, Girão H, van Niel G, Pereira P
Journal name Sci Adv
Publication year 2022
Sample Retinal pigment epithelial cells
Sample name ARPE-19
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectrometry
21
Experiment ID 18
MISEV standards
✔
EM
EV Biophysical techniques
✔
CD63
EV Enriched markers
✘ EV Negative markers
✘ EV Particle analysis
Identified molecule protein
Identification method FACS
PubMed ID 11907077    
Organism Homo sapiens
Experiment description TCR activation of human T cells induces the production of exosomes bearing the TCR/CD3/zeta complex.
Authors Blanchard N, Lankar D, Faure F, Regnault A, Dumont C, Raposo G, Hivroz C
Journal name JIMMU
Publication year 2002
Sample T cells
Sample name Jurkat
T cell blasts
Isolation/purification methods Filtration
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study FACS
22
Experiment ID 63
MISEV standards
✘ EV Biophysical techniques
✔
AQP2
EV Enriched 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 HLA-E
  Protein Interactor ExoCarta ID Identification method PubMed Species
1 KLRC2  
Invivo Homo sapiens
Invivo Homo sapiens
2 KLRC1  
Invivo Homo sapiens
3 HLA-E 3133
Affinity Capture-MS Homo sapiens
Affinity Capture-MS Homo sapiens
4 KLRD1  
Invivo Homo sapiens
Reconstituted Complex Homo sapiens
Affinity Capture-MS Homo sapiens
5 B2M 567
Affinity Capture-MS Homo sapiens
Invitro Homo sapiens
Co-crystal Structure Homo sapiens
View the network image/svg+xml



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