Gene description for Psmb3
Gene name proteasome (prosome, macropain) subunit, beta type 3
Gene symbol Psmb3
Other names/aliases AL033320
C10-II
Species Mus musculus
 Database cross references - Psmb3
ExoCarta ExoCarta_26446
Entrez Gene 26446
UniProt Q9R1P1  
 Psmb3 identified in exosomes derived from the following tissue/cell type
Fibroblasts 23260141    
Mast cells 17486113    
 Gene ontology annotations for Psmb3
Molecular Function
    peptidase activity GO:0008233 IEA
    hydrolase activity GO:0016787 IEA
    endopeptidase activity GO:0004175 ISO
    threonine-type endopeptidase activity GO:0004298 IEA
Biological Process
    proteasome-mediated ubiquitin-dependent protein catabolic process GO:0043161 IBA
    proteolysis GO:0006508 ISO
    protein catabolic process GO:0030163 TAS
    proteasomal ubiquitin-independent protein catabolic process GO:0010499 IBA
    proteolysis involved in cellular protein catabolic process GO:0051603 IEA
Subcellular Localization
    extracellular exosome GO:0070062 ISO
    nucleus GO:0005634 ISO
    proteasome complex GO:0000502 ISO
    mitochondrion GO:0005739 ISO
    proteasome core complex GO:0005839 IDA
    Golgi apparatus GO:0005794 ISO
    cytoplasm GO:0005737 ISO
    actin cytoskeleton GO:0015629 ISO
 Experiment description of studies that identified Psmb3 in exosomes
1
Experiment ID 210
ISEV standards
✔
EM
EV Biophysical techniques
✘ EV Cytosolic markers
✔
CD81|FLOT1
EV Membrane markers
✘ EV Negative markers
✘ EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 23260141    
Organism Mus musculus
Experiment description Exosomes Mediate Stromal Mobilization of Autocrine Wnt-PCP Signaling in Breast Cancer Cell Migration.
Authors Luga V, Zhang L, Viloria-Petit AM, Ogunjimi AA, Inanlou MR, Chiu E, Buchanan M, Hosein AN, Basik M, Wrana JL.
Journal name Cell
Publication year 2012
Sample Fibroblasts
Sample name Normal-Fibroblasts (L cells)
Isolation/purification methods Differential centrifugation
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
2
Experiment ID 15
ISEV standards
✔
EM
EV Biophysical techniques
✘ EV Cytosolic markers
✔
CD63
EV Membrane markers
✘ EV Negative markers
✘ EV Particle analysis
Identified molecule mrna
Identification method Microarray
PubMed ID 17486113    
Organism Mus musculus
Homo sapiens
Experiment description Exosome-mediated transfer of mRNAs and microRNAs is a novel mechanism of genetic exchange between cells.
Authors Valadi H, Ekstrom K, Bossios A, Sjostrand M, Lee JJ, Lotvall JO
Journal name NCB
Publication year 2007
Sample Mast cells
Sample name MC9
Bone marrow-derived mast cells
HMC-1
Isolation/purification methods Filtration
Ultracentrifugation
Sucrose density gradient
Flotation density 1.11-1.21 g/mL
Molecules identified in the study Protein
mRNA
miRNA
Methods used in the study Mass spectrometry [MALDI TOF]
Western blotting
Microarray
miRCURY LNA Array
 Protein-protein interactions for Psmb3
  Protein Interactor ExoCarta ID Identification method PubMed Species
No interactions are found.
 Pathways in which Psmb3 is involved
PathwayEvidenceSource
Activation of NF-kappaB in B cells IEA Reactome
Antigen processing: Ubiquitination & Proteasome degradation IEA Reactome
APC/C:Cdc20 mediated degradation of Securin IEA Reactome
APC/C:Cdh1 mediated degradation of Cdc20 and other APC/C:Cdh1 targeted proteins in late mitosis/early G1 IEA Reactome
Asymmetric localization of PCP proteins IEA Reactome
AUF1 (hnRNP D0) destabilizes mRNA IEA Reactome
Autodegradation of Cdh1 by Cdh1:APC/C IEA Reactome
Autodegradation of the E3 ubiquitin ligase COP1 IEA Reactome
Cdc20:Phospho-APC/C mediated degradation of Cyclin A IEA Reactome
CDK-mediated phosphorylation and removal of Cdc6 IEA Reactome
CDK-mediated phosphorylation and removal of Cdc6 IEA Reactome
CDT1 association with the CDC6:ORC:origin complex IEA Reactome
CLEC7A (Dectin-1) signaling IEA Reactome
Cross-presentation of soluble exogenous antigens (endosomes) IEA Reactome
Dectin-1 mediated noncanonical NF-kB signaling IEA Reactome
degradation of AXIN IEA Reactome
Degradation of beta-catenin by the destruction complex IEA Reactome
degradation of DVL IEA Reactome
Degradation of GLI1 by the proteasome IEA Reactome
Degradation of GLI2 by the proteasome IEA Reactome
ER-Phagosome pathway IEA Reactome
ER-Phagosome pathway IEA Reactome
GLI3 is processed to GLI3R by the proteasome IEA Reactome
Hedgehog 'on' state IEA Reactome
Hedgehog ligand biogenesis IEA Reactome
Orc1 removal from chromatin IEA Reactome
Orc1 removal from chromatin IEA Reactome
Regulation of activated PAK-2p34 by proteasome mediated degradation IEA Reactome
Regulation of ornithine decarboxylase (ODC) IEA Reactome
SCF(Skp2)-mediated degradation of p27/p21 IEA Reactome
SCF(Skp2)-mediated degradation of p27/p21 IEA Reactome
SCF-beta-TrCP mediated degradation of Emi1 IEA Reactome
Separation of Sister Chromatids IEA Reactome
Ubiquitin Mediated Degradation of Phosphorylated Cdc25A IEA Reactome
Ubiquitin-dependent degradation of Cyclin D1 IEA Reactome





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