| Field | Specification |
|---|---|
| Target | |
| Alternative names | Protein disulfide-isomerase A3;5.3.4.1;58 kDa glucose-regulated protein;58 kDa microsomal protein;p58;Disulfide isomerase ER-60;Endoplasmic reticulum resident protein 57;ER protein 57;ERp57;Endoplasmic reticulum resident protein 60;ER protein 60;ERp60;PDIA3;ERP57, ERP60, GRP58; |
| UniProt # | |
| Host | |
| Clone | |
| Clonality | |
| Isotype | |
| Reactivity | |
| Applications | |
| Immunogen | A synthesized peptide derived from human ERp57 |
| Molecular weight | |
| Purification | |
| Reconstitution | |
| Cellular localization | |
| Concentration | |
| Form | Liquid |
| Storage | |
| Catalog no. (Mfr.) | |
| Main SKU |
Product Overview
Clone ABOE-16 is a rabbit monoclonal antibody that recognizes protein disulfide-isomerase A3 (gene PDIA3) in human samples and is validated for Western blot, IHC and immunoprecipitation. The predicted molecular weight is 56.8 kDa, and the supplier reports an observed band at about 57 kDa.
ERp57 (PDIA3) is an ER oxidoreductase of the PDI family that forms, breaks and rearranges disulfide bonds in glycoproteins, working with calnexin and calreticulin. It is a core part of the MHC class I peptide-loading complex, where it partners with tapasin, so it is studied in protein folding, ER stress and antigen presentation.
| Target | Protein disulfide-isomerase A3 (gene PDIA3; UniProt P30101, human) |
|---|---|
| Clone | ABOE-16 |
| Host / Clonality / Isotype | Rabbit / Monoclonal / Rabbit IgG |
| Reactivity | Human |
| Form | Liquid |
| Formulation | PBS (pH 7.4); 150 mM NaCl; 0.02% sodium azide; 50% glycerol; plus stabilizers |
| Calculated MW | 56.8 kDa |
| Observed MW | 57 kDa |
| Storage | Long term: −20 °C for up to 12 months. Frequent use: 4 °C for up to 1 month. Avoid repeated freeze–thaw cycles. |
Validated Applications
| Western blot | 1:500–1:2000 |
|---|---|
| Immunohistochemistry | 1:50–1:200 |
| Immunoprecipitation | 1:20 |
Samples with a confirmed band (WB): human U251 cells, human A431 cells, human HepG2 cells, human SiHa cells, human RT4 cells, human HEL cells, human SH-SY5Y cells, human K562 cells.
Recommended loading (WB): 20–40 µg of total protein per lane.
Conditions in the example images (WB): 10% SDS-PAGE under reducing conditions, 30 µg lysate per lane, transfer to nitrocellulose membrane, blocking in 5% non-fat milk, primary antibody at 1:500 overnight at 4 °C, HRP-conjugated secondary antibody at 1:5000, ECL detection.
Samples with confirmed staining (IHC): human colon cancer tissue, human stomach cancer tissue.
Recommended antigen retrieval: heat-mediated, in TE buffer (pH 9.0); citrate buffer (pH 6.0) can be used instead.
Conditions in the example images (IHC): heat-mediated antigen retrieval in EDTA buffer (pH 8.0).
Immunogen
Synthetic peptide based on the sequence of human ERp57.
Reactivity Notes
The supplier lists reactivity with human. UniProt places protein disulfide-isomerase A3 in the endoplasmic reticulum, endoplasmic reticulum lumen and melanosome. Tissue expression noted by UniProt (human): Detected in the flagellum and head region of spermatozoa (at protein level). The samples tested by the supplier (listed above) are a practical starting point for positive controls.
Safety
Customization & Add-ons: Can’t find the antibody you need—or require a custom format for your assay? We can help you source the best match or support custom antibody solutions for diverse research needs, including species and isotype selection, conjugations and labeling (e.g., HRP/AP, biotin, fluorophores), purification grade options (Protein A/G, affinity purified), formulation preferences (buffer selection, carrier-free, glycerol-free), custom concentrations and aliquoting, low-endotoxin options for cell-based work, and application-focused QC/validation support (project dependent). Click Talk to a Scientist to submit a request, email us at support@biohippo.com, or explore our Research Services for additional support—our team will follow up with feasibility details and next steps.
