Description
Product Usage Information
Western Blotting: 1:1000
Immunohistochemistry (Paraffin): 1:50
Storage
Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA, 50% glycerol and less than 0.02% sodium azide. Store at -20°C. Do not aliquot the antibody.
Protocol
Available protocols: Western Blotting, Immunohistochemistry (Paraffin)
Specificity / Sensitivity
HSP40 (C64B4) Rabbit Monoclonal Antibody detects endogenous levels of total HSP40 protein. This antibody does not cross-react with other HSPs.
Species Reactivity: Human, Mouse, Rat, Monkey
Source / Purification
Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to Glu223 of human HSP40/Hdj1.
Background
HSP40 and HSP40-like proteins represent a large family of chaperone proteins that are homologous to DnaJ protein (1). These proteins are classified into three subtypes based on their structures. The common feature of the family is a conserved J domain, which is usually located at the amino terminus of proteins and responsible for their association with HSP70 (1,2). Human HSP40, also known as Hdj1, belongs to subtype II that contain a unique Gly/Phe-rich region (2). HSP40 family proteins bind unfolded proteins, prevent their aggregation, and then deliver them to HSP70 (2,3). Another major function of HSP40 is to stimulate ATPase activity of HSP70, which causes conformational change of the unfolded proteins (4,5). The HSP40-HSP70-unfolded protein complex further binds to co-chaperones Hip, Hop and HSP90 or components of the protein degradation machinery such as CHIP and BAG-1, which either leads to protein folding or degradation, respectively (6).
Alternate Names
DnaJ (Hsp40) homolog, subfamily B, member 1; DnaJ (Hsp40) homolog, subfmaily B, member 1; DnaJ heat shock protein family (Hsp40) member B1; DnaJ homolog subfamily B member 1; DnaJ protein homolog 1; DNAJ1; DNAJB1; DNJB1; hDj-1; HDJ1; Heat shock 40 kDa protein 1; heat shock 40kD protein 1; Heat shock protein 40; HSP40; HSPF1; Human DnaJ protein 1; radial spoke 16 homolog B; RSPH16B; Sis1
