| Field | Specification |
|---|---|
| Target | |
| Alternative names | T-cell surface glycoprotein CD3 epsilon chain; T-cell surface antigen T3/Leu-4 epsilon chain; CD3e; Cd3e |
| UniProt # | |
| Host | |
| Clonality | |
| Isotype | |
| Reactivity | |
| Applications | |
| Immunogen | E.coli-derived mouse CD3 epsilon/Cd3e recombinant protein (Position: D22-A113). |
| Molecular weight | |
| Purification | |
| Reconstitution | |
| Cellular localization | |
| Concentration | |
| Form | Lyophilized |
| Storage | |
| Catalog no. (Mfr.) | |
| Main SKU |
Product Overview
This rabbit polyclonal antibody recognizes T-cell surface glycoprotein CD3 epsilon chain (gene Cd3e) in mouse and rat samples and is validated for Western blot, IHC, flow cytometry and ELISA. The predicted molecular weight is 21.4 kDa, and the supplier reports an observed band at about 23 kDa.
CD3ε (CD3E) is a core invariant chain of the T-cell receptor–CD3 complex, pairing with CD3γ or CD3δ. It transmits antigen-recognition signals through its ITAM motif, and anti-CD3ε antibodies are the standard tools for identifying and activating T cells.
| Target | T-cell surface glycoprotein CD3 epsilon chain (gene Cd3e; UniProt P22646, 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; 0.05 mg NaN3 |
| Calculated MW | 21.4 kDa |
| Observed MW | 23 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 | 0.1–0.25 µg/mL (Mouse, Rat) |
|---|---|
| IHC (paraffin sections) | 0.5–1 µg/mL (Mouse, Rat) |
| Flow cytometry (fixed cells) | 1–3 µg/1×106 cells (Mouse) |
| ELISA | 0.1–0.5 µg/mL (Rat) |
Samples with a confirmed band (WB): rat thymus tissue, mouse thymus 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 0.25 µg/mL overnight at 4 °C, HRP-conjugated secondary antibody at 1:5000, ECL detection.
Samples with confirmed staining (IHC): mouse lymph node tissue, mouse spleen tissue, rat lymph node 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).
Samples with a confirmed signal (flow cytometry): mouse spleen tissue.
Immunogen
Recombinant mouse CD3 epsilon/Cd3e fragment (Asp22–Ala113), expressed in E. coli.
Reactivity Notes
The supplier lists reactivity with mouse and rat. UniProt places T-cell surface glycoprotein CD3 epsilon chain in the cell membrane. 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.
