Reactivity | HuSpecies Glossary |
Applications | Bioactivity |
Format | Carrier-Free |
Details of Functionality | Reaction conditions will need to be optimized for each specific application. IMPORTANT: HSP90 alpha /HSP90AA1 works in conjunction with the co-chaperones such as p23/PTGES3--both proteins are typically required for enzymatic activity. For in vitro use we recommend an initial co-chaperone concentration of 2-3 μM, with an equimolar (or greater) concentration of HSP90 alpha /HSP90AA1. |
Source | E. coli-derived human HSP90 alpha protein Met1 - Asp732 |
Accession # | |
Protein/Peptide Type | Recombinant Proteins |
Gene | HSP90AA1 |
Purity | >85%, by SDS-PAGE under reducing conditions and visualized by Colloidal Coomassie® Blue stain. |
Dilutions |
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Theoretical MW | 85 kDa. Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors. |
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Publications |
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Storage | Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
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Buffer | Supplied as a solution in HEPES, KCl and TCEP. |
Purity | >85%, by SDS-PAGE under reducing conditions and visualized by Colloidal Coomassie® Blue stain. |
Members of the HSP90 family are essential chaperones found in all organisms from bacteria to humans. HSP90 complexes often interact with proteins in their native conformation and help to maintain/stabilize ligand-bound states and can assist in the folding of nascent polypeptides and the refolding of denatured proteins. In this capacity, HSP90 plays a central role in function and turnover of many proteins involved in processes such as signal transduction, cell cycle control and apoptosis. HSP70 family members and HSP90 complexes frequently act in tandem, with the former participating in the folding of the client proteins and HSP90 stabilizing them in a way favorable for interaction with ligands. HSP90 forms complexes with an array of co-chaperones that both regulate its interaction with client proteins and stimulate its ATPase activity. By binding to different co-chaperones HSP90 acquires specificity for different families of client proteins. Many of the HSP90-client proteins are involved in tumor cell growth and HSP90 inhibitors are important as potential anticancer drugs. Inhibition of HSP90 also prevents the formation of protein aggregates in models of Parkinson disease, Huntington disease, and others. This recombinant protein may be used in conjunction with p23 (AP-170) in various in vitro protein refolding assays.
Hsp90A - helping to fold a wide variety of signal transduction proteins Heat-shock protein 90 (Hsp90) is a conserved ATP-dependent chaperone with diverse cellular functions. Hsp90 is ubiquitously expressed but is further induced upon cellular stress such as heat-shock or nutrient deprivation. Hsp90 is essential for the... Read full blog post. |
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