HSPA4 antibody (C-Term)

Catalog No. ABIN7877393

This Rabbit Polyclonal antibody specifically detects HSPA4 in WB, IHC, ICC, IF and FACS. It exhibits reactivity toward Human, Mouse and Rat.

Quick Overview for HSPA4 antibody (C-Term) (ABIN7877393)

Target: HSPA4 (Heat Shock 70kDa Protein 4 (HSPA4))

Reactivity: Human, Mouse, Rat

Host: Rabbit

Clonality: Polyclonal

Conjugate: This HSPA4 antibody is un-conjugated

Application: Western Blotting (WB), Immunohistochemistry (IHC), Immunocytochemistry (ICC), Immunofluorescence (IF), Flow Cytometry (FACS)

Product Details anti-HSPA4 Antibody

Binding Specificity: C-Term

Purpose: HSPA4 Antibody / Heat shock protein family A member 4

Purification: Immunogen affinity purified

Immunogen: A synthetic peptide corresponding to a sequence at the C-terminus of human HSPA4 was used as the immunogen for the HSPA4 antibody.

Isotype: IgG

Application Details

Application Notes: Optimal dilution of the HSPA4 antibody should be determined by the researcher.

Restrictions: For Research Use only

Handling

Format: Lyophilized

Reconstitution: Adding 0.2 mL of distilled water will yield a concentration of 500 μg/mL

Buffer: Each vial contains 4 mg Trehalose, 0.9 mg NaCl, 0.2 mg Na2HPO4.

Storage: 4 °C,-20 °C

Storage Comment: After reconstitution, the HSPA4 antibody can be stored for up to one month at 4oC. For long-term, aliquot and store at -20oC. Avoid repeated freezing and thawing.

Target Details for HSPA4

Target: HSPA4 (Heat Shock 70kDa Protein 4 (HSPA4))

Alternative Name: HSPA4

Background: HSPA4 antibody detects Heat shock protein family A member 4, also known as HSP70-like protein 1, encoded by the HSPA4 gene on chromosome 5q31.1. HSPA4 is a molecular chaperone belonging to the heat shock protein 70 (HSP70) family, which assists in the folding, assembly, and degradation of nascent and stress-denatured proteins. It is expressed in most tissues, with particularly high levels in brain, liver, and testis, where protein quality control and stress recovery are essential. HSPA4 functions as a co-chaperone with HSP70 and HSP90 to maintain proteostasis under physiological and stress conditions.

Structurally, HSPA4 contains a conserved N-terminal ATPase domain and a C-terminal substrate-binding domain that interacts with unfolded polypeptides. It also includes a variable C-terminal tail that mediates interactions with co-chaperones and client proteins. HSPA4 belongs to the HSP110 subfamily of the HSP70 superfamily, which functions as a nucleotide exchange factor for other chaperones. Co-localization studies show HSPA4 in both the cytoplasm and nucleus, where it participates in heat shock response and protein degradation pathways.

Functionally, HSPA4 promotes proper protein folding, prevents aggregation, and assists in refolding stress-denatured proteins. It also participates in chaperone-mediated autophagy and the ubiquitin-proteasome pathway, ensuring the clearance of damaged proteins. In neurons, HSPA4 supports synaptic protein stability and protects against aggregation-linked neurodegenerative processes. In germ cells, it contributes to spermatogenesis by stabilizing testis-specific proteins. Known interaction partners include HSP70, HSP90, BAG family co-chaperones, and CHIP (STUB1), which regulate client degradation.

HSPA4 plays an important role in cellular defense against heat, oxidative stress, and proteotoxicity. It is upregulated in response to stress stimuli such as heat shock, ischemia, and toxin exposure. Dysregulation of HSPA4 expression has been associated with neurodegenerative diseases, infertility, and cancer. Overexpression enhances tumor survival by preventing apoptosis, while loss of function increases susceptibility to protein aggregation. Pathway associations include the heat shock response, protein refolding, and proteasomal degradation. During development, HSPA4 is expressed in proliferating and differentiating cells where protein folding demand is high.

The HSPA4 antibody from NSJ Bioreagents is a reliable reagent for research on molecular chaperones, protein quality control, and stress response mechanisms.

UniProt: P34932