Description
Product Name: | Human GRP78 Recombinant Protein (His tag) |
Product Code: | RPES5445 |
Size: | 20µg |
Species: | Human |
Expression Host: | E.coli |
Synonyms: | HSPA5, BIP, GRP78, HEL-S-89n, MIF2 |
Mol Mass: | 22.99 kDa |
AP Mol Mass: | 30 kDa |
Tag: | N-His |
Purity: | > 95 % as determined by reducing SDS-PAGE. |
Endotoxin Level: | Please contact us for more information. |
Bio Activity: | Testing in progress |
Sequence: | Gln 261-Glu 470 |
Accession: | P11021 |
Storage: | Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80°C. Reconstituted protein solution can be stored at 4-8°C for 2-7 days. Aliquots of reconstituted samples are stable at < -20°C for 3 months. |
Shipping: | This product is provided as lyophilized powder which is shipped with ice packs. |
Formulation: | Lyophilized from sterile PBS, pH 7.4. Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization. Please refer to the specific buffer information in the printed manual. |
Reconstitution: | Please refer to the printed manual for detailed information. |
Background: | GRP78 (Glucose-regulated protein 78 kDa; also BiP and HSPA5) is a 72 kDa member of the heat shock protein 70 family of proteins. Intracellularly, GRP78 is an endoplasmic reticulum chaperone that participates in protein folding; extracellularly, it induces IL-10 production from T cells and interacts with Cripto to block TGF-beta signaling. Human GRP78 precursor is 654 amino acids (aa) in length. It contains an 18 aa signal sequence and a 636 aa mature region that shows a hydantoinase A region (aa 145‑245) and a C-terminal KDEL motif that is present on intracellular GRP78, but absent on secreted GRP78. There is alternative splicing in the signal sequence (aa 1‑10), and multiple single aa substitituion. |