Gene description for C1R
Gene name complement component 1, r subcomponent
Gene symbol C1R
Other names/aliases -
Species Homo sapiens
 Database cross references - C1R
ExoCarta ExoCarta_715
Entrez Gene 715
HGNC 1246
MIM 613785
UniProt P00736  
 C1R identified in exosomes derived from the following tissue/cell type
Mesenchymal stem cells Unpublished / Not applicable
Plasma 19028452    
Platelets 25332113    
Platelets 25332113    
Platelets 25332113    
Prostate cancer cells 22723089    
Prostate cancer cells 22723089    
 Gene ontology annotations for C1R
Molecular Function
    serine-type endopeptidase activity GO:0004252 EXP
    protein binding GO:0005515 IPI
    serine-type peptidase activity GO:0008236 TAS
    calcium ion binding GO:0005509 IEA
Biological Process
    complement activation, classical pathway GO:0006958 TAS
    complement activation GO:0006956 TAS
    innate immune response GO:0045087 TAS
    immune response GO:0006955 TAS
    proteolysis GO:0006508 IEA
Subcellular Localization
    extracellular exosome GO:0070062 IDA
    extracellular region GO:0005576 TAS
    blood microparticle GO:0072562 IDA
 Experiment description of studies that identified C1R in exosomes
1
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PubMed ID Unpublished / Not applicable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
2
Experiment ID 44
ISEV standards
✔
IEM
EV Biophysical techniques
✘ EV Cytosolic markers
✘ EV Membrane markers
✘ EV Negative markers
✘ EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 19028452    
Organism Homo sapiens
Experiment description Proteomic profiling of human plasma exosomes identifies PPARgamma as an exosome-associated protein.
Authors Looze C, Yui D, Leung L, Ingham M, Kaler M, Yao X, Wu WW, Shen RF, Daniels MP, Levine SJ
Journal name BBRC
Publication year 2009
Sample Plasma
Sample name Plasma
Isolation/purification methods Filtration
Size exclusion
Sucrose density gradient
Flotation density 1.15-1.16 g/mL
Molecules identified in the study Protein
Methods used in the study Mass spectrometry [LTQ]
Western blotting
Immunoelectron Microscopy
3
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
4
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
5
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
6
Experiment ID 140
ISEV standards
✔
EM
EV Biophysical techniques
✔
HSP70|HSP90|RAB5
EV Cytosolic markers
✔
LAMP2|CD9
EV Membrane markers
✔
HSP90B1
EV Negative markers
✘ EV Particle analysis
Identified molecule protein
Identification method
Mass spectrometry [QTOF]   
PubMed ID 22723089    
Organism Homo sapiens
Experiment description Prostate cancer cell derived exosomes
Authors Hosseini-Beheshti E, Guns ES.
Journal name MCP
Publication year 2012
Sample Prostate cancer cells
Sample name VCaP - Rep 2
Isolation/purification methods Sucrose density gradient
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry [QTOF]
7
Experiment ID 141
ISEV standards
✔
EM
EV Biophysical techniques
✔
HSP70|HSP90|RAB5
EV Cytosolic markers
✔
LAMP2|CD9
EV Membrane markers
✔
HSP90B1
EV Negative markers
✘ EV Particle analysis
Identified molecule protein
Identification method
Mass spectrometry [QTOF]   
PubMed ID 22723089    
Organism Homo sapiens
Experiment description Prostate cancer cell derived exosomes
Authors Hosseini-Beheshti E, Guns ES.
Journal name MCP
Publication year 2012
Sample Prostate cancer cells
Sample name VCaP - Rep 3
Isolation/purification methods Sucrose density gradient
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry [QTOF]
 Protein-protein interactions for C1R
  Protein Interactor ExoCarta ID Identification method PubMed Species
1 SERPING1 710
Invitro Homo sapiens
2 C1QA 712
Affinity Capture-Western Homo sapiens
3 C1R 715
Invitro Homo sapiens
Affinity Capture-MS Homo sapiens
Invitro Homo sapiens
Affinity Capture-MS Homo sapiens
4 C1QB 713
Invivo Homo sapiens
Affinity Capture-MS Homo sapiens
5 C1S 716
Invitro Homo sapiens
Reconstituted Complex Homo sapiens
Affinity Capture-Western Homo sapiens
Affinity Capture-Western Homo sapiens
View the network image/svg+xml
 Pathways in which C1R is involved
PathwayEvidenceSource
Classical antibody-mediated complement activation TAS Reactome
Initial triggering of complement TAS Reactome





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