GRP78 Polyclonal Antibody (E-AB-40588)
For research use only.
| Verified Samples |
Verified Samples in WB: Hela, Jurkat, MCF-7, Mouse lung, Mouse liver, Rat lung, Rat liver, Rat small intestine |
| Dilution | WB 1:500-1000 |
| Isotype | IgG |
| Host | Rabbit |
| Reactivity | Human, Mouse, Rat |
| Applications | WB |
| Clonality | Polyclonal |
| Immunogen | Recombinant Human GRP78 protein expressed by E.coli. |
| Abbre | GRP78 |
| Synonyms | GRP-78, HSP70 family protein 5, HSPA5, Heat shock protein family A member 5, Immunoglobulin heavy chain-binding protein, BiP |
| Swissprot | |
| Calculated MW | 72 kDa |
| Observed MW |
78 kDa
The actual band is not consistent with the expectation.
Western blotting is a method for detecting a certain protein in a complex sample based on the specific binding of antigen and antibody. Different proteins can be divided into bands based on different mobility rates. The mobility is affected by many factors, which may cause the observed band size to be inconsistent with the expected size. The common factors include: 1. Post-translational modifications: For example, modifications such as glycosylation, phosphorylation, methylation, and acetylation will increase the molecular weight of the protein. 2. Splicing variants: Different expression patterns of various mRNA splicing bodies may produce proteins of different sizes. 3. Post-translational cleavage: Many proteins are first synthesized into precursor proteins and then cleaved to form active forms, such as COL1A1. 4. Relative charge: the composition of amino acids (the proportion of charged amino acids and uncharged amino acids). 5. Formation of multimers: For example, in protein dimer, strong interactions between proteins can cause the bands to be larger. However, the use of reducing conditions can usually avoid the formation of multimers. If a protein in a sample has different modified forms at the same time, multiple bands may be detected on the membrane. |
| Cellular Localization | Cytoplasm, Endoplasmicreticulumlumen, Cytoplasm, Cellsurface. |
| Concentration | 1 mg/mL |
| Buffer | PBS with 0.05% proclin 300, 1% protective protein and 50% glycerol,pH7.4 |
| Purification Method | Antigen Affinity Purification |
| Research Areas | Cancer, Tags and Cell Markers |
| Conjugation | Unconjugated |
| Storage | Store at -20°C Valid for 12 months. Avoid freeze / thaw cycles. |
| Shipping | The product is shipped with ice pack,upon receipt,store it immediately at the temperature recommended. |
| 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. Over aa 1‑654, human GRP78 is more than 97% aa identical to mouse and rat GRP78. |
Other Clones
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Other Formats
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Unconjugated
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