• USA Home
  • SRP0182 - Hsp90a Active human

SRP0182 Sigma

Hsp90a Active human

recombinant, expressed in E. coli, ≥80% (SDS-PAGE)

Synonym: HSP86, HSPCAL3, Heat shock protein 90 kDa α, LAP2, NY-REN-38 (renal carcinoma antigen)



Related Categories Cell Biology, Cell Signaling and Neuroscience, Cell Stress, Chaperonins and Heat Shock Proteins, Heat Shock and Related Proteins,
recombinant   expressed in E. coli
assay   ≥80% (SDS-PAGE)
form   aqueous solution
mol wt   mol wt 85.5 kDa
NCBI accession no.   NM_005348
shipped in   dry ice
storage temp.   −70°C
Gene Information   human ... HSP90AA2(3324)



Useful for the study of enzyme kinetics, screening inhibitors, and selectivity profiling.

Preparation Note

Thaw on ice. Upon first thaw, briefly spin tube containing enzyme to recover full content of the tube. Aliquot enzyme into single use aliquots. Store remaining undiluted enzyme in aliquots at -70°C. Note: Enzyme is very sensitive to freeze/thaw cycles.

Physical form

Formulated in 25 mM Tris-HCl, pH 7.5, 400 mM NaCl, 0.05% Tween 20, 10% glycerol and 3 mM DTT.

Biochem/physiol Actions

HSP90α (heat shock protein 90α) is involved intracellularly in the folding, assembly-disassembly and activation of multiple types of target proteins such as kinases, steroid hormone receptors and transcription factors. Extracellularly this protein is also required for neuronal and dermal fibroblast motility, and melanoma migration, invasion and metastasis. Extracellular HSP90α induces pro-invasive protein matrix metalloproteinase-2 (MMP-2), thereby promoting tumor invasiveness. This protein facilitates the migration of dermal and epidermal cells to the site of wound in a surface receptor LRP-1 (LDL receptor-related protein 1)-dependent manner, and is thus, involved in wound healing. In an early stage of the antigen processing pathway, HSP90α might function as a chaperone for precursors of pMHC I (peptide-loaded major histocompatibility I complexes).

General description

HSP90α (heat shock protein 90α) is an ATP-binding, ubiquitous molecular chaperone protein. This protein contains an N-terminal domain, a charged region, a middle domain, and a C-terminal domain. It is an intracellular protein present in the cytoplasm, but is also released extracellularly through exosomes. The secretion of HSP90α is controlled by the EEVD motif in the C-terminal through its interaction with tetratricopeptide repeat domain-containing proteins. The secreted form is truncated at the C-terminal.

Price and Availability

All labs need water
Safety & Documentation

Safety Information

Safety Information for this product is unavailable at this time.


Certificate of Analysis

Protocols & Articles
Peer-Reviewed Papers


Related Products

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?