Gene description for Serpinb1a
Gene name serine (or cysteine) peptidase inhibitor, clade B, member 1a
Gene symbol Serpinb1a
Other names/aliases 1190005M04Rik
AI325983
EI
EIA
ELANH2
LEI
M/NEI
MNEI
PI2
Species Mus musculus
 Database cross references - Serpinb1a
ExoCarta ExoCarta_66222
Vesiclepedia VP_66222
Entrez Gene 66222
UniProt Q9D154  
 Serpinb1a identified in sEVs derived from the following tissue/cell type
Colon cancer cells 37309723    
Faeces 33431899    
Faeces 33431899    
T-cell lymphoma cells 37309723    
 Gene ontology annotations for Serpinb1a
Molecular Function
    serine-type endopeptidase inhibitor activity GO:0004867 IBA
    serine-type endopeptidase inhibitor activity GO:0004867 IEA
    protein binding GO:0005515 IPI
    peptidase inhibitor activity GO:0030414 ISO
Biological Process
    inflammatory response GO:0006954 IDA
    negative regulation of endopeptidase activity GO:0010951 IBA
    negative regulation of endopeptidase activity GO:0010951 ISO
    cellular homeostasis GO:0019725 IDA
    negative regulation of interleukin-1 beta production GO:0032691 IBA
    negative regulation of interleukin-1 beta production GO:0032691 IMP
    negative regulation of interleukin-1 beta production GO:0032691 ISO
    regulation of protein catabolic process GO:0042176 IPI
    type B pancreatic cell proliferation GO:0044342 IDA
    type B pancreatic cell proliferation GO:0044342 ISO
    regulation of innate immune response GO:0045088 IDA
Subcellular Localization
    extracellular region GO:0005576 IDA
    extracellular region GO:0005576 ISO
    extracellular space GO:0005615 IBA
    extracellular space GO:0005615 IEA
    early endosome GO:0005769 IEA
    cytoplasmic ribonucleoprotein granule GO:0036464 ISO
    cytolytic granule GO:0044194 IEA
    collagen-containing extracellular matrix GO:0062023 HDA
 Experiment description of studies that identified Serpinb1a in sEVs
1
Experiment ID 907
MISEV standards
EM
Biophysical techniques
Tsg101|Sdcbp|Cd151|Gapdh|Lamp2|Cd81|Cd82|Cd9|Cd63|Cd80|Flot2|Tfrc|Rab35|Rab5a
Enriched markers
HSPA5
Negative markers
NTA
Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 37309723    
Organism Mus musculus
Experiment description Proteomic analysis of the small extracellular vesicles and soluble secretory proteins from cachexia inducing and non-inducing cancer cells
Authors "Chitti SV, Kang T, Fonseka P, Marzan AL, Stewart S, Shahi S, Bramich K, Ang CS, Pathan M, Gummadi S, Mathivanan S."
Journal name Proteomics
Publication year 2023
Sample Colon cancer cells
Sample name C26
Isolation/purification methods Differential centrifugation
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectrometry
2
Experiment ID 303
MISEV standards
EM
Biophysical techniques
Cd63|Cd81|Cd9
Enriched markers
Negative markers
NTA
Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 33431899    
Organism Mus musculus
Experiment description High-fat diet-induced upregulation of exosomal phosphatidylcholine contributes to insulin resistance
Authors "Kumar A, Sundaram K, Mu J, Dryden GW, Sriwastva MK, Lei C, Zhang L, Qiu X, Xu F, Yan J, Zhang X, Park JW, Merchant ML, Bohler HCL, Wang B, Zhang S, Qin C, Xu Z, Han X, McClain CJ, Teng Y, Zhang HG."
Journal name Nat Commun
Publication year 2021
Sample Faeces
Sample name Intestinal epithelial cells - C57BL/6
Isolation/purification methods Differential centrifugation
Ultracentrifugation
Sucrose density gradient centrifugation
Flotation density -
Molecules identified in the study Protein
Lipid
miRNA
Methods used in the study Western blotting
Mass spectrometry
Immunofluorescence
miRNA array
HPLC
3
Experiment ID 304
MISEV standards
EM
Biophysical techniques
Cd63|Cd81|Cd9
Enriched markers
Negative markers
NTA
Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 33431899    
Organism Mus musculus
Experiment description High-fat diet-induced upregulation of exosomal phosphatidylcholine contributes to insulin resistance
Authors "Kumar A, Sundaram K, Mu J, Dryden GW, Sriwastva MK, Lei C, Zhang L, Qiu X, Xu F, Yan J, Zhang X, Park JW, Merchant ML, Bohler HCL, Wang B, Zhang S, Qin C, Xu Z, Han X, McClain CJ, Teng Y, Zhang HG."
Journal name Nat Commun
Publication year 2021
Sample Faeces
Sample name Intestinal epithelial cells - C57BL/6
Isolation/purification methods Differential centrifugation
Ultracentrifugation
Sucrose density gradient centrifugation
Flotation density -
Molecules identified in the study Protein
Lipid
miRNA
Methods used in the study Western blotting
Mass spectrometry
Immunofluorescence
miRNA array
HPLC
4
Experiment ID 908
MISEV standards
EM
Biophysical techniques
Tsg101|Sdcbp|Cd151|Gapdh|Lamp2|Cd81|Cd82|Cd9|Cd63|Cd80|Flot2|Tfrc|Rab35|Rab5a
Enriched markers
HSPA5
Negative markers
NTA
Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 37309723    
Organism Mus musculus
Experiment description Proteomic analysis of the small extracellular vesicles and soluble secretory proteins from cachexia inducing and non-inducing cancer cells
Authors "Chitti SV, Kang T, Fonseka P, Marzan AL, Stewart S, Shahi S, Bramich K, Ang CS, Pathan M, Gummadi S, Mathivanan S."
Journal name Proteomics
Publication year 2023
Sample T-cell lymphoma cells
Sample name EL4
Isolation/purification methods Differential centrifugation
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectrometry
 Protein-protein interactions for Serpinb1a
  Protein Interactor ExoCarta ID Identification method PubMed Species
1 Fancd2  
Affinity Capture-MS Mus musculus
View the network image/svg+xml
 Pathways in which Serpinb1a is involved
PathwayEvidenceSource
Immune System IEA Reactome
Innate Immune System IEA Reactome
Neutrophil degranulation IEA Reactome





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