Gene description for DNAJB9
Gene name DnaJ (Hsp40) homolog, subfamily B, member 9
Gene symbol DNAJB9
Other names/aliases ERdj4
Species Homo sapiens
 Database cross references - DNAJB9
ExoCarta ExoCarta_4189
Entrez Gene 4189
HGNC 6968
MIM 602634
UniProt Q9UBS3  
 DNAJB9 identified in exosomes derived from the following tissue/cell type
Saliva 19199708    
 Gene ontology annotations for DNAJB9
Molecular Function
    misfolded protein binding GO:0051787 IDA
    protein binding GO:0005515 IPI
Biological Process
    ER-associated ubiquitin-dependent protein catabolic process GO:0030433 IMP
    endoplasmic reticulum unfolded protein response GO:0030968 TAS
    cellular protein metabolic process GO:0044267 TAS
    IRE1-mediated unfolded protein response GO:0036498 TAS
Subcellular Localization
    endoplasmic reticulum membrane GO:0005789 TAS
    cytoplasm GO:0005737 ISS
    extracellular exosome GO:0070062 IDA
    nucleolus GO:0005730 ISS
    endoplasmic reticulum GO:0005783 IDA
    endoplasmic reticulum lumen GO:0005788 IEA
 Experiment description of studies that identified DNAJB9 in exosomes
Experiment ID 66
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 19199708    
Organism Homo sapiens
Experiment description Proteomic analysis of human parotid gland exosomes by multidimensional protein identification technology (MudPIT).
Authors Gonzalez-Begne M, Lu B, Han X, Hagen FK, Hand AR, Melvin JE, Yates JR
Journal name JPR
Publication year 2009
Sample Saliva
Sample name Saliva
Isolation/purification methods Differential centrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry [LTQ]
Western blotting
Immunoelectron Microscopy
 Protein-protein interactions for DNAJB9
  Protein Interactor ExoCarta ID Identification method PubMed Species
1 FSCN1 6624
Two-hybrid Homo sapiens
2 SLC16A8  
Two-hybrid Homo sapiens
3 TCERG1  
Affinity Capture-MS Homo sapiens
4 RFK  
Two-hybrid Homo sapiens
5 MYL6 4637
Two-hybrid Homo sapiens
6 DYNLL1 8655
Two-hybrid Homo sapiens
7 TCEA2  
Two-hybrid Homo sapiens
8 PLK1 5347
Two-hybrid Homo sapiens
View the network image/svg+xml
 Pathways in which DNAJB9 is involved
XBP1(S) activates chaperone genes TAS Reactome

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