Date published: 2025-12-14

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HSP 40 Antibody (B-3): sc-398766

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Datasheets
  • HSP 40 Antibody (B-3) is a mouse monoclonal IgG1 κ HSP 40 antibody, cited in 8 publications, provided at 200 µg/ml
  • raised against amino acids 241-340 mapping at the C-terminus of HSP 40 protein 1 of human origin
  • HSP 40 Antibody (B-3) is recommended for detection of HSP 40 subfamily B member 1 of mouse, rat and human origin by WB, IP, IF and ELISA; also reactive with additional species, including and canine and bovine
  • Anti-HSP 40 Antibody (B-3) is available conjugated to agarose for IP; HRP for WB, IHC(P) and ELISA; and to either phycoerythrin or FITC for IF, IHC(P) and FCM
  • also available conjugated to Alexa Fluor® 488, Alexa Fluor® 546, Alexa Fluor® 594 or Alexa Fluor® 647 for WB (RGB), IF, IHC(P) and FCM, and for use with RGB fluorescent imaging systems, such as iBright™ FL1000, FluorChem™, Typhoon, Azure and other comparable systems
  • also available conjugated to Alexa Fluor® 680 or Alexa Fluor® 790 for WB (NIR), IF and FCM; for use with Near-Infrared (NIR) detection systems, such as LI-COR®Odyssey®, iBright™ FL1000, FluorChem™, Typhoon, Azure and other comparable systems
  • m-IgG Fc BP-HRP and m-IgG1 BP-HRP are the preferred secondary detection reagents for HSP 40 Antibody (B-3) for WB applications. These reagents are now offered in bundles with HSP 40 Antibody (B-3) (see ordering information below).

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HSP 40 Antibody (B-3) is a mouse monoclonal IgG1 kappa light chain antibody that detects HSP 40 protein of mouse, rat, and human origin by western blotting (WB), immunoprecipitation (IP), immunofluorescence (IF), and enzyme-linked immunosorbent assay (ELISA). HSP 40 (B-3) antibody is available in both non-conjugated and various conjugated forms, including agarose, horseradish peroxidase (HRP), phycoerythrin (PE), fluorescein isothiocyanate (FITC), and multiple Alexa Fluor® conjugates. Heat shock protein 40 (HSP 40), also known as DnaJ, plays a crucial role in cellular stress responses by functioning as a molecular chaperone. HSP 40 interacts with HSP 70 through its J-domain, enhancing the ATPase activity of HSP 70, which is vital for protein folding and preventing aggregation of misfolded proteins. HSP 40 is predominantly located in the cytoplasm but translocates to the nucleus and nucleoli in response to heat shock, highlighting its importance in cellular adaptation to stress. This dynamic localization is essential for the regulation of protein homeostasis and the maintenance of cellular function under stress conditions. With five known family members, HSP 40 is integral to the assembly and disassembly of protein complexes, ensuring proper protein maturation and function.

For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.

Alexa Fluor® is a trademark of Molecular Probes Inc., OR., USA

LI-COR® and Odyssey® are registered trademarks of LI-COR Biosciences

HSP 40 Antibody (B-3) References:

  1. Heat shock protein (Hsp) 40 mutants inhibit Hsp70 in mammalian cells.  |  Michels, AA., et al. 1999. J Biol Chem. 274: 36757-63. PMID: 10593983
  2. Mammalian HSP40/DNAJ homologs: cloning of novel cDNAs and a proposal for their classification and nomenclature.  |  Ohtsuka, K. and Hata, M. 2000. Cell Stress Chaperones. 5: 98-112. PMID: 11147971
  3. Specificity of class II Hsp40 Sis1 in maintenance of yeast prion [RNQ+].  |  Lopez, N., et al. 2003. Mol Biol Cell. 14: 1172-81. PMID: 12631732
  4. Expression of heat shock protein (Hsp) 70 and Hsp 40 in colorectal cancer.  |  Kanazawa, Y., et al. 2003. Med Oncol. 20: 157-64. PMID: 12835518
  5. Novel role of HSP40/DNAJ in the regulation of HIV-1 replication.  |  Urano, E., et al. 2013. J Acquir Immune Defic Syndr. 64: 154-62. PMID: 24047968
  6. The endoplasmic reticulum HSP40 co-chaperone ERdj3/DNAJB11 assembles and functions as a tetramer.  |  Chen, KC., et al. 2017. EMBO J. 36: 2296-2309. PMID: 28655754
  7. Targeting the Hsp40/Hsp70 Chaperone Axis as a Novel Strategy to Treat Castration-Resistant Prostate Cancer.  |  Moses, MA., et al. 2018. Cancer Res. 78: 4022-4035. PMID: 29764864
  8. Cotranslocation and colocalization of hsp40 (DnaJ) with hsp70 (DnaK) in mammalian cells.  |  Yamane, M., et al. 1995. Cell Struct Funct. 20: 157-66. PMID: 7641298
  9. Heat-shock protein 40, a novel predictor of thermotolerance in murine cells.  |  Kaneko, R., et al. 1995. Radiat Res. 142: 91-7. PMID: 7899564
  10. Effect of ATP on the release of hsp 70 and hsp 40 from the nucleus in heat-shocked HeLa cells.  |  Ohtsuka, K., et al. 1993. Exp Cell Res. 209: 357-66. PMID: 8262154
  11. Isolation of a new member of DnaJ-like heat shock protein 40 (Hsp40) from human liver.  |  Hoe, KL., et al. 1998. Biochim Biophys Acta. 1383: 4-8. PMID: 9546042
  12. Presence of molecular chaperones, heat shock cognate (Hsc) 70 and heat shock proteins (Hsp) 40, in the postsynaptic structures of rat brain.  |  Suzuki, T., et al. 1999. Brain Res. 816: 99-110. PMID: 9878698

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

HSP 40 Antibody (B-3)

sc-398766
200 µg/ml
$316.00

HSP 40 Antibody (B-3): m-IgG Fc BP-HRP Bundle

sc-527809
200 µg Ab; 10 µg BP
$354.00

HSP 40 Antibody (B-3): m-IgG1 BP-HRP Bundle

sc-533182
200 µg Ab; 20 µg BP
$354.00

HSP 40 Antibody (B-3) AC

sc-398766 AC
500 µg/ml, 25% agarose
$416.00

HSP 40 Antibody (B-3) HRP

sc-398766 HRP
200 µg/ml
$316.00

HSP 40 Antibody (B-3) FITC

sc-398766 FITC
200 µg/ml
$330.00

HSP 40 Antibody (B-3) PE

sc-398766 PE
200 µg/ml
$343.00

HSP 40 Antibody (B-3) Alexa Fluor® 488

sc-398766 AF488
200 µg/ml
$357.00

HSP 40 Antibody (B-3) Alexa Fluor® 546

sc-398766 AF546
200 µg/ml
$357.00

HSP 40 Antibody (B-3) Alexa Fluor® 594

sc-398766 AF594
200 µg/ml
$357.00

HSP 40 Antibody (B-3) Alexa Fluor® 647

sc-398766 AF647
200 µg/ml
$357.00

HSP 40 Antibody (B-3) Alexa Fluor® 680

sc-398766 AF680
200 µg/ml
$357.00

HSP 40 Antibody (B-3) Alexa Fluor® 790

sc-398766 AF790
200 µg/ml
$357.00

What is the recommended starting dilution for Western blot for sc-398766: HSP 40 (B-3) monoclonal antibody?

Asked by: cjMara
The recommended starting dilution for Western blot is 1:100 with a dilution range of 1:100-1:1000. This information, along with other technical specifications, is available in the recommended protocol: https://www.scbt.com/scbt/resources/protocols/western-immuno-blotting
Answered by: Technical Support
Date published: 2017-03-22
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Rated 4 out of 5 by from Gute Ergebnisse im Western Blot.Verdünnungen von 1:500 und 1:1000 zeigen beide gute Banden und kein Hintergrundsignal! Wir sind zufrieden!
Date published: 2021-03-22
Rated 5 out of 5 by from Very good antibody for WBVery good and specific band detection at diluition 1:1000 in western blotting of human bronchial cell lines 16-HBE
Date published: 2018-10-05
Rated 5 out of 5 by from Great antibody!1:500 diluted for wb of rat protein,the band is strong and special
Date published: 2018-01-31
Rated 5 out of 5 by from Works well for WBworks well for western - samples were human cells in culture
Date published: 2017-11-21
Rated 5 out of 5 by from great antibody for western blotI recently used it for western blot at 1/1000 dilution, and it gives very good bands.
Date published: 2017-08-29
Rated 5 out of 5 by from Great for WBThe HSP 40 Antibody (B-3): sc-398766 works very well for Western blot applications, showing clear band with minimal background.
Date published: 2017-01-18
Rated 4 out of 5 by from Potent and quite specific antibodyThis monoclonal antibody was independently tested in-house by Kinexus Bioinformatics Corporation and validated for use for Western blotting. There was strong detection of the ~40 kDa target protein in an A431/HepG2/MCF7 cell lysate mix, but the target was not detected in mouse tissues (brain/testes/thymus/muscle mix). No major cross-reactivities were observed at 2 µg/ml antibody concentration with off-target proteins in the mouse tissues tested. A ~25 kDa strongly cross-reactive protein was detectable in the A431/HepG2/MCF7 cell lysate mix.
Date published: 2016-11-10
Rated 5 out of 5 by from Great antibody for WesternGreat antibody for Western, strong band detected in K-562 and Jurkat. -SCBT QC
Date published: 2015-04-06
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HSP 40 Antibody (B-3) is rated 4.8 out of 5 by 8.
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