gp96/HSP90B1/GRP94 Recombinant Protein Antigen

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Product Details

Summary
Reactivity HuSpecies Glossary
Applications AC

Order Details

gp96/HSP90B1/GRP94 Recombinant Protein Antigen Summary

Description
A recombinant protein antigen with a N-terminal His6-ABP tag corresponding to human HSP90B1.

Source: E.coli

Amino Acid Sequence: WSSKTETVEEPMEEEEAAKEEKEESDDEAAVEEEEEEKKPKTKKVEKTVWDWELMNDIKPIWQRPSKEVEEDEYKAFYKSFSKESDDPMAYIHFTAEGEVTFKSILFVPTS

Source
E. coli
Protein/Peptide Type
Recombinant Protein Antigen
Gene
HSP90B1
Purity
>80% by SDS-PAGE and Coomassie blue staining

Applications/Dilutions

Dilutions
  • Antibody Competition 10 - 100 molar excess
Application Notes
This peptide is useful as a blocking peptide for NBP1-81802.
Protein was purified by IMAC chromatography. The expected concentration is greater than 0.5 mg/ml. This product is produced on demand, estimated shipping date is 4 weeks after the order is placed.

For further blocking peptide related information and a protocol, click here.
Theoretical MW
31 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.

Packaging, Storage & Formulations

Storage
Store at -20C. Avoid freeze-thaw cycles.
Buffer
PBS and 1M Urea, pH 7.4.
Preservative
No Preservative
Purity
>80% by SDS-PAGE and Coomassie blue staining

Notes

This product is intended to be used as a blocking antigen for antibody competition assays. Any other use of this antigen is done at the risk of the user. The use of this product for commercial production is strictly prohibited. Please contact technical support if you have any questions.

Alternate Names for gp96/HSP90B1/GRP94 Recombinant Protein Antigen

  • 94 kDa glucose-regulated protein
  • ECGP
  • Endoplasmin
  • endothelial cell (HBMEC) glycoprotein
  • glucose regulated protein, 94 kDa
  • gp96
  • GP96ECGP
  • Grp94
  • GRP-94
  • GRP94gp96 homolog
  • Heat shock protein 90 kDa beta member 1
  • heat shock protein 90kDa beta (Grp94), member 1
  • HSP90B1
  • TRA1endoplasmin
  • tumor rejection antigen (gp96) 1
  • Tumor rejection antigen 1
  • Tumor rejection antigen-1 (gp96)

Background

Glucose-regulated protein 94, also known as Grp94 or gp96, is an abundant resident endoplasmic reticulum (ER) lumenal stress protein which together with cytosolic Hsp90 belongs to the Hsp90 family of molecular chaperones. Grp94 and other resident soluble proteins of the ER such as members of the Ca(2+) binding protein subfamily (CaBP), CaBPI and CaBP2 as well as calreticulin, possess the COOH-terminal tetrapeptide Lys-Asp-Glu-Leu (KDEL) which is a sorting signal that is thought to lead to the retention of these proteins in the pre-Golgi compartments (1). Grp94 expression is upregulated by stress conditions such as lucose starvation and heat shock, which promote protein misfolding or unfolding (2). In addition to a homeostatic role in protein folding and assembly, Grp94 can function in the intracellular trafficking of peptides from the extracellular space to the MHC class I antigen processing pathway of antigen presentation cells (3,4). Grp94 and Hsp90 share high sequence identity and presumably identical adenosine nucleotide-dependent modes of regulation. Earlier data suggests that Hsp90 and Grp94 may differ in their nucleotide binding properties. The N-terminal domain of eukaryotic Hsp90 proteins contains a conserved adenosine nucleotide binding pocket which also serves as the inding site for the Hsp90 inhibitors geldanamycin and radicicol. However, the molecular basis for adenosine nucleotide-dependent regulation of Grp94remains to be established. Recent data has entified a ligand dependent regulation of Grp94 function and suggest a model whereby Grp94 function is regulated through a ligand-dependent conversion of Grp94 from an inactive to an active conformation (5, 6).

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. This product is guaranteed for 1 year from date of receipt.

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Bioinformatics

Gene Symbol HSP90B1