GRP78/HSPA5 Antibody (3G12-1G11) Summary
| Immunogen |
Full-length recombinant rat GRP78
|
| Localization |
Endoplasmic Reticulum, Endoplasmic Reticulum Lumen, Melanosome
|
| Isotype |
IgG1 Kappa
|
| Clonality |
Monoclonal
|
| Host |
Mouse
|
| Gene |
HSPA5
|
| Purity |
Protein G purified
|
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|
Applications/Dilutions
| Dilutions |
|
| Application Notes |
1 ug/ml of this antibody was sufficient for detection of GRP78 in 20 ug of HEK-293 lysate by colorimetric immunoblot analysis using Goat anti-mouse IgG:HRP as the secondary antibody.
|
| Theoretical MW |
78 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 4C short term. Aliquot and store at -20C long term. Avoid freeze-thaw cycles.
|
| Buffer |
PBS pH7.4, 50% glycerol
|
| Preservative |
0.09% Sodium Azide
|
| Concentration |
1 mg/ml
|
| Purity |
Protein G purified
|
Alternate Names for GRP78/HSPA5 Antibody (3G12-1G11)
- 78 kDa glucose-regulated protein
- BIP
- Endoplasmic reticulum lumenal Ca(2+)-binding protein grp78
- FLJ26106
- GRP78
- GRP-78
- GRP78BIP
- Heat shock 70 kDa protein 5
- heat shock 70kD protein 5 (glucose-regulated protein, 78kD)
- heat shock 70kDa protein 5 (glucose-regulated protein, 78kDa)
- HSP70-5
- HSPA5
- Immunoglobulin heavy chain-binding protein
- MIF2
Background
GRP78 is a ubiquitously expressed, 78-kDa glucose-regulated protein, and is commonly referred to as an immunoglobin chain binding protein (BiP). The BiP proteins are categorized as stress response proteins because they play an important role in the proper folding and assembly of nascent protein and in the scavenging of misfolded proteins in the endoplasmic reticulum lumen. Translation of BiP is directed by an internal ribosomal entry site (IRES) in the 5 nontranslated region of the BiP mRNA. BiP IRES activity increases when cells are heat stressed (1). GRP78 is also critical for maintenance of cell homeostasis and the prevention of apoptosis (2). Luo et al. have provided findings that suggest GRP78 is essential for embryonic cell growth and pluripotent cell survival (3).In terms of diseases, GRP78 has been shown to be a reliable biomarker of hypoglycemia, to serve a neuroprotective function in neurons exposed to glutamate and oxidative stress (4), and its protein levels are reduced in the brains of Alzheimers patients (5). Also, the induction of the GRP78 protein that results in severe glucose and oxygen deprivation could possible lead to drug resistance to anti-tumor drugs (6, 7).