Abcam, ab69402, Anti-Hsp40 antibody

Size: 200µg
Rabbit Polyclonal Hsp40 antibody. Suitable for WB and reacts with Recombinant full length protein - Human, Human, Mouse, Rat samples. Cited in 17 publications. Immunogen corresponding to Recombinant Full Length Protein corresponding to Human DNAJB1.
Key facts
Host species:Rabbit,
Clonality:Polyclonal,
Isotype:IgG,
Carrier free:No,
Reacts with:Mouse, Rat, Human,
Applications:WBSee reactivity dataSee the reactivity data table below for information on validated species and application combinations.,
Immunogen:Recombinant Full Length Protein corresponding to Human DNAJB1.P25685,
Specificity:This antibody detects a ~40 kDa protein, corresponding to the apparent molecular mass of Hsp40 on SDS-PAGE immunoblots. It does not detect DnaJ in E.coli lysates.

Properties and Storage Information:
Form-Liquid, Purification technique-Affinity purification Protein A, Storage buffer-Preservative: 0.09% Sodium azideConstituents: PBS, 50% Glycerol (glycerin, glycerine), Shipped at conditions-Blue Ice, Appropriate short-term storage conditions-+4°C, Appropriate long-term storage conditions--20°C, Aliquoting information-Upon delivery aliquot, Storage information-Avoid freeze / thaw cycle

Supplementary Information:
This supplementary information is collated from multiple sources and compiled automatically.
Hsp40 also known as DnaJB1 is a member of the heat shock protein family that acts mechanically as a molecular chaperone. This protein with a mass of approximately 41 kDa assists in protein folding and stabilization preventing aggregation under stress conditions. Hsp40 proteins are widely expressed in various tissues and are important in maintaining cellular homeostasis. In addition to DnaJB1 other aliases include 3b9 and 2a7 which emphasize its variety within the Hsp40 family.
Biological function summary
Hsp40 proteins participate in cell signaling and stress response by modulating the activity of Hsp70 forming a functional complex with it to guide protein folding processes. This process is essential for protein quality control and cellular protection. It interacts with unfolded proteins and delivers them to Hsp70 enhancing its ATPase activity necessary for the proper functioning of these molecular chaperones. The expression of Hsp40 in stress conditions highlights its importance in the protein quality control system.
Pathways
Hsp40 is involved in important cellular mechanisms like the unfolded protein response and protein catabolism pathways. It works closely with Hsp70 playing a pivotal role in managing protein misfolding and aggregation vital for cellular stress response and recovery. In these pathways Hsp40's function ensures the proper folding and degradation of damaged proteins maintaining proteostasis in the cell.
Hsp40 influences the development of neurodegenerative diseases and certain cancers. Mutations or altered expression of Hsp40 can lead to disrupted protein homeostasis contributing to conditions like Alzheimer's disease and tumor progression. In Alzheimer's disease besides interacting with Hsp70 Hsp40 affects the accumulation of amyloid-beta peptides. In cancer contexts it may interact with other chaperone proteins affecting their function and therefore promoting tumor aggressiveness and resistance to stress.