| Field | Specification |
|---|---|
| Target | |
| Alternative names | Polymeric immunoglobulin receptor; PIgR; Poly-Ig receptor; Secretory component; Pigr |
| Gene ID | |
| UniProt # | |
| Host | |
| Clonality | |
| Isotype | |
| Reactivity | |
| Applications | |
| Immunogen | E.coli-derived mouse Polymeric immunoglobulin receptor/PIGR recombinant protein (Position: D34-A771). |
| Molecular weight | |
| Purification | |
| Reconstitution | |
| Cellular localization | |
| Concentration | |
| Form | Lyophilized |
| Storage | |
| Catalog no. (Mfr.) | |
| Main SKU |
Product Overview
This rabbit polyclonal antibody recognizes polymeric immunoglobulin receptor (gene Pigr) in mouse and rat samples and is validated for Western blot, flow cytometry and ELISA. The predicted molecular weight is 85.0 kDa, and the supplier reports an observed band at about 85–100 kDa.
The polymeric immunoglobulin receptor (pIgR) carries dimeric IgA and pentameric IgM across mucosal epithelial cells from the basolateral to the apical side. At the surface its extracellular part is cleaved to form secretory component, which stays bound to the antibody and protects it, so pIgR is central to research on mucosal immunity in the gut, airways and glands.
| Target | Polymeric immunoglobulin receptor (gene Pigr; UniProt O70570, mouse) |
|---|---|
| Host / Clonality / Isotype | Rabbit / Polyclonal / Rabbit IgG |
| Reactivity | Mouse, Rat |
| Form | Lyophilized |
| Formulation | Per vial: 4 mg trehalose; 0.9 mg NaCl; 0.2 mg Na2HPO4 |
| Calculated MW | 85.0 kDa |
| Observed MW | 85–100 kDa |
| Storage | As supplied: −20 °C for up to 12 months from receipt. After reconstitution: 4 °C for up to 1 month, or aliquot and keep at −20 °C for up to 6 months. Avoid repeated freeze–thaw cycles. |
Validated Applications
| Western blot | 0.25–0.5 µg/mL (Mouse, Rat) |
|---|---|
| Flow cytometry (fixed cells) | 1–3 µg/1×106 cells (Rat) |
| ELISA | 0.1–0.5 µg/mL |
Samples with a confirmed band (WB): rat liver tissue, mouse liver tissuemouse intestine tissue.
Recommended loading (WB): 20–40 µg of total protein per lane.
Conditions in the example images (WB): 5–20% gradient SDS-PAGE under reducing conditions, 30 µg lysate per lane, transfer to nitrocellulose membrane, blocking in 5% non-fat milk, primary antibody at 0.5 µg/mL overnight at 4 °C, HRP-conjugated secondary antibody at 1:5000, ECL detection.
Samples with a confirmed signal (flow cytometry): RH35 cells.
Immunogen
Recombinant mouse Polymeric immunoglobulin receptor/PIGR fragment (Asp34–Ala771), expressed in E. coli.
Reactivity Notes
The supplier lists reactivity with mouse and rat. 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.
