Gene description for LBP
Gene name lipopolysaccharide binding protein
Gene symbol LBP
Other names/aliases BPIFD2
Species Homo sapiens
 Database cross references - LBP
ExoCarta ExoCarta_3929
Vesiclepedia VP_3929
Entrez Gene 3929
HGNC 6517
MIM 151990
UniProt P18428  
 LBP identified in exosomes derived from the following tissue/cell type
Bone marrow mesenchymal stem cells 36408942    
Bone marrow mesenchymal stem cells 36408942    
Bone marrow mesenchymal stem cells 36408942    
Bone marrow mesenchymal stem cells 36408942    
Platelets 25332113    
Platelets 25332113    
Platelets 25332113    
Urine 19056867    
 Gene ontology annotations for LBP
Molecular Function
    receptor binding GO:0005102 ISS
    lipopolysaccharide binding GO:0001530 ISS
    protein binding GO:0005515 IPI
    lipoteichoic acid binding GO:0070891 IDA
Biological Process
    cellular response to lipoteichoic acid GO:0071223 IDA
    positive regulation of interleukin-8 production GO:0032757 IDA
    negative regulation of tumor necrosis factor production GO:0032720 IDA
    leukocyte chemotaxis involved in inflammatory response GO:0002232 IEA
    response to lipopolysaccharide GO:0032496 IDA
    detection of molecule of bacterial origin GO:0032490 IDA
    toll-like receptor 4 signaling pathway GO:0034142 TAS
    toll-like receptor signaling pathway GO:0002224 TAS
    lipopolysaccharide-mediated signaling pathway GO:0031663 IDA
    cellular defense response GO:0006968 ISS
    positive regulation of neutrophil chemotaxis GO:0090023 IEA
    positive regulation of chemokine production GO:0032722 IEA
    innate immune response GO:0045087 TAS
    cellular response to lipopolysaccharide GO:0071222 IDA
    defense response to Gram-positive bacterium GO:0050830 IDA
    positive regulation of interleukin-6 production GO:0032755 IDA
    acute-phase response GO:0006953 ISS
    positive regulation of respiratory burst involved in inflammatory response GO:0060265 ISS
    negative regulation of growth of symbiont in host GO:0044130 IEA
    lipopolysaccharide transport GO:0015920 IDA
    positive regulation of macrophage activation GO:0043032 IDA
    positive regulation of toll-like receptor 4 signaling pathway GO:0034145 IDA
    positive regulation of tumor necrosis factor biosynthetic process GO:0042535 IEA
    positive regulation of tumor necrosis factor production GO:0032760 ISS
    opsonization GO:0008228 ISS
    defense response to Gram-negative bacterium GO:0050829 ISS
    macrophage activation involved in immune response GO:0002281 ISS
Subcellular Localization
    cell surface GO:0009986 IDA
    extracellular exosome GO:0070062 IDA
    extracellular region GO:0005576 TAS
    extracellular space GO:0005615 ISS
 Experiment description of studies that identified LBP in exosomes
1
Experiment ID 489
MISEV standards
✔
EM
EV Biophysical techniques
✔
Cd9|Cd81|Cd63|Gapdh|Sdcbp|Lamp1|Aqp1|Rab5a|Icam1|Cd82|Itga2b|Tsg101|Lamp2|Rab35|Flot1|Flot2|Cd151|Rab5b|Tfrc|Uchl1
EV Enriched markers
✔
Canx
EV Negative markers
✔
NTA
EV Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 36408942    
Organism Rattus norvegicus
Experiment description Quantitative proteomic analysis of exosomes from umbilical cord mesenchymal stem cells and rat bone marrow stem cells
Authors Xu X, Yin F, Guo M, Gan G, Lin G, Wen C, Wang J, Song P, Wang J, Qi ZQ, Zhong CQ.
Journal name Proteomics
Publication year 2023
Sample Bone marrow mesenchymal stem cells
Sample name BMSC - Passage 6
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectometry
2
Experiment ID 490
MISEV standards
✔
EM
EV Biophysical techniques
✔
Cd9|Cd81|Cd63|Gapdh|Sdcbp|Lamp1|Aqp1|Rab5a|Icam1|Cd82|Itga2b|Tsg101|Lamp2|Rab35|Flot1|Flot2|Cd151|Rab5b|Tfrc|Uchl1
EV Enriched markers
✔
Canx
EV Negative markers
✔
NTA
EV Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 36408942    
Organism Rattus norvegicus
Experiment description Quantitative proteomic analysis of exosomes from umbilical cord mesenchymal stem cells and rat bone marrow stem cells
Authors Xu X, Yin F, Guo M, Gan G, Lin G, Wen C, Wang J, Song P, Wang J, Qi ZQ, Zhong CQ.
Journal name Proteomics
Publication year 2023
Sample Bone marrow mesenchymal stem cells
Sample name BMSC - Passage 7
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectometry
3
Experiment ID 491
MISEV standards
✔
EM
EV Biophysical techniques
✔
Cd9|Cd81|Cd63|Gapdh|Sdcbp|Lamp1|Aqp1|Rab5a|Icam1|Cd82|Itga2b|Tsg101|Lamp2|Rab35|Flot1|Flot2|Cd151|Rab5b|Tfrc|Uchl1
EV Enriched markers
✔
Canx
EV Negative markers
✔
NTA
EV Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 36408942    
Organism Rattus norvegicus
Experiment description Quantitative proteomic analysis of exosomes from umbilical cord mesenchymal stem cells and rat bone marrow stem cells
Authors Xu X, Yin F, Guo M, Gan G, Lin G, Wen C, Wang J, Song P, Wang J, Qi ZQ, Zhong CQ.
Journal name Proteomics
Publication year 2023
Sample Bone marrow mesenchymal stem cells
Sample name BMSC - Passage 8
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectometry
4
Experiment ID 492
MISEV standards
✔
EM
EV Biophysical techniques
✔
Cd9|Cd81|Cd63|Gapdh|Sdcbp|Lamp1|Aqp1|Rab5a|Icam1|Cd82|Itga2b|Tsg101|Lamp2|Rab35|Flot1|Flot2|Cd151|Rab5b|Tfrc|Uchl1
EV Enriched markers
✔
Canx
EV Negative markers
✔
NTA
EV Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 36408942    
Organism Rattus norvegicus
Experiment description Quantitative proteomic analysis of exosomes from umbilical cord mesenchymal stem cells and rat bone marrow stem cells
Authors Xu X, Yin F, Guo M, Gan G, Lin G, Wen C, Wang J, Song P, Wang J, Qi ZQ, Zhong CQ.
Journal name Proteomics
Publication year 2023
Sample Bone marrow mesenchymal stem cells
Sample name BMSC - Passage 9
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectometry
5
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
6
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
7
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
8
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 LBP
  Protein Interactor ExoCarta ID Identification method PubMed Species
1 IRF6 3664
Reconstituted Complex Homo sapiens
2 CFHL1  
Affinity Capture-Western Homo sapiens
3 CD14 929
Invitro Homo sapiens
4 RPS21 6227
Invitro Homo sapiens
Two-hybrid Homo sapiens
5 APOA1 335
Affinity Capture-Western Homo sapiens
View the network image/svg+xml
 Pathways in which LBP is involved
PathwayEvidenceSource
Toll Like Receptor 4 (TLR4) Cascade TAS Reactome
Transfer of LPS from LBP carrier to CD14 TAS Reactome





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