DNAJB1 Antibody

Code CSB-PA002989
Size US$100
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  • Western Blot analysis of COLO205 cells using HSP40 Polyclonal Antibody
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Product Details

Uniprot No.
Target Names
Alternative Names
DnaJ (Hsp40) homolog subfmaily B member 1 antibody; DNAJ 1 antibody; DNAJ B1 antibody; DnaJ heat shock protein family (Hsp40) member B1 antibody; DnaJ homolog subfamily B member 1 antibody; DnaJ protein homolog 1 antibody; DNAJ1 antibody; DNAJB 1 antibody; Dnajb1 antibody; DNAJB1 protein antibody; DNJB1_HUMAN antibody; HDJ 1 antibody; HDJ-1 antibody; HDJ1 antibody; Heat shock 40 kDa protein 1 antibody; Heat shock 40kD protein 1 antibody; Heat shock protein 40 antibody; Hsp 40 antibody; HSP40 antibody; HSPF 1 antibody; HSPF1 antibody; Human DnaJ protein 1 antibody; Radial spoke 16 homolog B antibody; RSPH16B antibody; Sis1 antibody
Raised in
Species Reactivity
Synthesized peptide derived from the C-terminal region of Human HSP40.
Immunogen Species
Homo sapiens (Human)
Purification Method
The antibody was affinity-purified from rabbit antiserum by affinity-chromatography using epitope-specific immunogen.
It differs from different batches. Please contact us to confirm it.
Liquid in PBS containing 50% glycerol, 0.5% BSA and 0.02% sodium azide.
Tested Applications
Recommended Dilution
Application Recommended Dilution
WB 1:500-1:2000
IHC 1:100-1:300
IF 1:200-1:1000
ELISA 1:10000
Troubleshooting and FAQs
Upon receipt, store at -20°C or -80°C. Avoid repeated freeze.
Lead Time
Basically, we can dispatch the products out in 1-3 working days after receiving your orders. Delivery time maybe differs from different purchasing way or location, please kindly consult your local distributors for specific delivery time.

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Target Background

Interacts with HSP70 and can stimulate its ATPase activity. Stimulates the association between HSC70 and HIP. Negatively regulates heat shock-induced HSF1 transcriptional activity during the attenuation and recovery phase period of the heat shock response. Stimulates ATP hydrolysis and the folding of unfolded proteins mediated by HSPA1A/B (in vitro).
Gene References into Functions
  1. this study shows that DNAJB1/HSP40 suppresses Melanoma Differentiation-Associated Gene 5-Mitochondrial Antiviral Signaling Protein function in conjunction with HSP70 PMID: 29069650
  2. Modeling of the different conformations of PRKACA-DNAJB1 Chimeric Kinase revealed no obvious steric interactions of the J-domain with the rest of the RIIbeta holoenzyme. PMID: 29335433
  3. Data show that DnaJ (Hsp40) homolog, subfamily B, member 1 (DNAJB1) is a transcriptional target of forkhead box protein E3 (FOXE3) in a pathway that is crucial for the development of the anterior segment of the eye. PMID: 27218149
  4. These results indicate that Mixed fibrolamellar hepatocellular carcinoma (mFL-HCC) is similar to pure FL-HCC at the genomic level and the DNAJB1:PRKACA fusion can be used as a diagnostic tool for both pure and mFL-HCC PMID: 27029710
  5. These studies demonstrate an important role for cellular chaperone Hsp40/DnaJB1 in influenza A virus life cycle by assisting nuclear trafficking of viral ribonucleoproteins. PMID: 26750153
  6. DNAJB1-PRKACA was evaluated as a key driver of fibrolamellar carcinoma and as a candidate therapeutic target PMID: 26505878
  7. study provides a new molecular mechanism to regulate EGFR signaling through modulation of MIG6 by DNAJB1 as a negative regulator. PMID: 26239118
  8. Whole exome sequencing followed by immunohistochemistry of fibrolamellar hepatocellular carcinoma cell lines and tumors showed two structural variants resulting in fusion transcripts: DNAJB1-PRKCA and CLPTM1L-GLIS3. PMID: 25122662
  9. In this cohort of fibrolamellar hepatocellular carcinoma, almost 80% contained the DNAJB1-PRKACA fusion transcript. PMID: 25557953
  10. Authors identified DNAJB1 as a negative regulator of PDCD5-mediated apoptosis and found that the apoptosis network of PDCD5 regulates cancer cell death. PMID: 25444898
  11. We also found that, despite an initial report to the contrary, the human homolog of Sis1, Hdj1, is capable of [PSI+] prion propagation in place of Sis1 PMID: 25058638
  12. HSP40 interacts with pyruvate kinase M2 and regulates glycolysis and cell proliferation in tumor cells. PMID: 24658033
  13. Studies with specific phosphoantibodies indicate that MK5 phosphorylates Hsp40/DnaJB1 in vivo at Ser-149 or/and Ser-151 and Ser-171 in the C-terminal domain of Hsp40/DnaJB1. PMID: 24309468
  14. Evidence supporting the presence of the DNAJB1-PRKACA chimeric transcript in 100% of the FL-HCCs examined (15/15) suggests that this genetic alteration contributes to tumor pathogenesis. PMID: 24578576
  15. we discovered a new MDM2 interacting protein, DNAJB1, and provided evidence to support its p53-dependent tumor suppressor function. PMID: 24361594
  16. HSP40 and HSP110 function together in protein homeostasis control. PMID: 24091676
  17. methionine deprivation results in an antioxidant response that includes an increase in the levels of HSPA1A and DNAJB1 mRNA PMID: 23395854
  18. There was a positive correlation between DnaJB1 and severity of pulmonary arterial hypertension in peripheral blood mononuclear cells from patients with limited cutaneous systemic sclerosis. PMID: 23400395
  19. Hsp40 regulates the amount of keratin proteins via ubiquitin-proteasome pathway. PMID: 22075554
  20. Mammalian Hsp110 (Apg-2), Hsp70 (Hsc70 or Hsp70) and Hsp40 (Hdj1) were necessary and sufficient to slowly dissolve large disordered aggregates and recover natively folded protein PMID: 22022600
  21. Cellular localization studies showed that NP and Hsp40 co-localize primarily in the nucleus. During IAV infection in mammalian cells, expression of NP coincided with the dissociation of P58(IPK) from Hsp40 and decrease PKR phosphorylation PMID: 21698289
  22. The antiviral activity of overexpressed DNAJC14 occurs in a time- and dose-dependent manner. PMID: 21249176
  23. The crystal structure of full-length Hdj1 was diffracted to 3.90A resolution. PMID: 21139202
  24. 5-fluorouracil & carboplatin specifically induce expression of Hsp40 in hepatoma cells. siRNA knockdown of Hsp40 diminishes survival of drug-exposed cells. PMID: 19901540
  25. Altered expression of HSPF1 was found in brains and lymphoblastoid cells from patients with bipolar disorder. PMID: 14743183
  26. sequestered in discrete foci in the nucleus of the infected cell in herpes simplex virus type 1 infection PMID: 15194794
  27. It is confirmed an increased expression of HSPF1 in the lymphoblastoid cell lines from patients with bipolar I disorder, bipolar II disorder, and schizophrenia. PMID: 15362566
  28. Hsp40 is crucial for Nef-mediated enhancement of viral gene expression and replication PMID: 16179353
  29. hepatitis B virus X protein is the major target of Hdj1 in the inhibition of hepatitis B virus replication PMID: 16842747
  30. These results demonstrate a role for Hsp40/DnaJB6 in the regulation of HIV-2 PIC nuclear transport. PMID: 18032501
  31. The 2.7A structure reveals that Hdj1 forms a homodimer in the crystal by a crystallographic two-fold axis. PMID: 18211704

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Subcellular Location
Cytoplasm. Nucleus. Nucleus, nucleolus. Note=Translocates rapidly from the cytoplasm to the nucleus, and especially to the nucleoli, upon heat shock.
Database Links

HGNC: 5270

OMIM: 604572

KEGG: hsa:3337

STRING: 9606.ENSP00000254322

UniGene: Hs.515210

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