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Heat Shock Response

  • AMP'D® HSP70 High Sensitivity ELISA Kit
  • Grp78/BiP ELISA kit
  • HSP90α (human), ELISA Kit

Stress & Heat Shock Proteins

The highly conserved heat shock proteins (HSPs) are constitutively expressed and function as molecular chaperones which facilitate the synthesis and folding of proteins. They also participate in protein assembly, export, turn-over and regulation. Under stressful conditions such as heat shock, pH shift or hypoxia, increased expression of HSPs protect the cell by stabilizing unfolded proteins, giving the cell time to repair or re-synthesize damaged proteins. ELS offers a number of kits, antibodies, proteins, inhibitors and more reagents to study HSPs/chaperones, HSF’s, Grp’s, ERp’s, clusterin and other stress related molecules.

Substrate loading complex for the HSP90 system [HSP90 (orange), HSP70 (light orange), HSP40 (yellow), HOP (blue), and client substrate (red)


Molecular Chaperones & Heat Shock Proteins

Biological Significance of Heat Shock Proteins & Chaperones

The family of heat shock proteins (HSPs) was initially characterized as a highly conserved battery of genes whose expression could be induced by heat shock. HSPs play a prominent role in many of the cell’s most basic processes. Many heat shock protein family members are now known to function constitutively as molecular chaperones, stabilizing and assisting in the trafficking of nascent peptides during normal growth. Under stressful conditions such as heat shock or hypoxia, increased expression of heat shock proteins protects the cell by stabilizing unfolded or misfolded peptides, giving the cell time to repair or re-synthesize damaged proteins. Their general role as molecular chaperones, protectors of the proteome, is now central to many areas of active research including aging, neurodegeneration, signaling, immunology and cancer.

Many heat shock proteins function together in co-chaperone complexes, such as HSP70/HSP40 (bacterial DnaK/DnaJ) that along with GrpE acts as an ATP-regulated shuttle complex for newly synthesized proteins. Many of these nascent peptides are delivered to HSP90-containing complexes, which play a critical role in the stabilization and activation of key signaling kinases and hormone receptors. The HSP60/HSP10 complex (bacterial GroEL/GroES) forms an alternative protein folding mechanism in the mitochondria. Small heat shock proteins including HSP27 and the crystallins form large oligomeric complexes that function to prevent protein aggregation.

Featured Literature



Enzo Life Sciences is your exclusive source for the comprehensive portfolio of Stressgen® products specific to the analysis of Heat Shock Proteins (HSP) and chaperones. Products include: inhibitors, substrates, proteins, antibodies, kits and a host of other products specific for HSPs, co-chaperones, and client proteins.

Enzo Life Sciences ELISA kits offer an easy and reproducible way to quantify various heat shock proteins including HSP70 and HSP90α.

Heat shock mediated induction of [pSer326]HSF1 Protein (Prod. No. ADI-900-199) in HeLa and 3T3 cells. Induction is expressed as the fold change relative to non heat‐shocked control samples.


AMP'D® HSP70 High Sensitivity ELISA Kit

Ultra-sensitive ELISA kit enabling the ability to use less sample and detect both baseline and upregulated levels of Hsp70 (Hsp72)

  • Ultra-sensitive measurement of Hsp70, detecting as little as 7 pg/ml
  • Ability to detect both baseline and upregulated/stressed levels of Hsp70 in human, mouse and rat serum and plasma samples
  • Negligible reactivity from similar Hsp70 family members (Hsc70/Hsp73, Grp78, DnaK, or Hsp71)
  • High throughput format with results in 4.5 hours for up to 38 samples in duplicate
  • Fully quantitative results that surpass semi-quantitative Western blot analysis

Grp78/BiP ELISA kit

High-sensitivity ELISA kit for quantifying both normal and upregulated levels of Grp78/BiP for unfolded protein response, cancer and neurodegenerative disease research.

  • Rapid – results in just 2.5 hours from up to 40 samples in duplicate
  • Sensitive – reliably measure 8.4ng/ml of Grp78/BiP
  • Quantitative – fully quantitative results surpass semi-quantitative Western blot analysis
  • Easy-to-use – simplified protocol with less steps compared to sandwich assay formats

[pSer326]HSF1 ELISA kit

Sensitive, ELISA kit for this key transcription factor for heat shock protein (chaperone) research.

  • Sensitive - measure pg/ml of HSF1 and use less precious sample compared to Western blot
  • Time Saving - results from up to 40 samples in duplicate in just 3 hours
  • Convenient - ready-to-use liquid color-coded reagents and pre-coated plate

Online Reference Tools

  • Heat Shock Protein Gene Table
    Includes links to Entrez & SwissProt entries, and related products

  • Heat shock protein - Wikipedia, the free encyclopedia
    Heat shock proteins (HSPs) are a group of proteins whose expression is increased when the cells are exposed to elevated temperatures or other stress...

  • Chaperone - Wikipedia, the free encyclopedia
    Chaperones are proteins that assist the non-covalent folding/unfolding and the assembly/disassembly of other macromolecular structures,...

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