| Host | Rabbit |
| Antigen | CD3 EPSILON |
| Synonyms | T-cell surface antigen T3/Leu-4 epsilon chain, CD3e, T3E, CD3E |
| Immunogen | N/A |
| Location | Cell membrane |
| Accession | P07766 |
| Clone Number | SDT-R137 |
| Antibody Type | Recombinant mAb |
| Application | WB, IHC-P, IP |
| Reactivity | Hu, Ms, Rt |
| Purification | Protein A |
| Concentration | 0.25 mg/ml |
| Tag | N/A |
| Physical Appearance | Liquid |
| Storage Buffer | PBS, 40% Glycerol, 0.05% BSA, 0.03% Proclin 300 |
| Stability & Storage | 12 months from date of receipt / reconstitution, -20 °C as supplied |
| application | dilution | species |
| WB | 1:500 | |
| IHC-P | 1:1000-1:2000 | |
| IP | 1:25 |
CD3 (cluster of differentiation 3) is a protein complex and T cell co-receptor that is involved in activating both the cytotoxic T cell (CD8+ naive T cells) and T helper cells (CD4+ naive T cells). It is composed of four distinct chains. In mammals, the complex contains a CD3γ chain, a CD3δ chain, and two CD3ε chains. These chains associate with the T-cell receptor (TCR) and the CD3-zeta (ζ-chain) to generate an activation signal in T lymphocytes. The TCR, CD3-zeta, and the other CD3 molecules together constitute the TCR complex. The CD3–T cell receptor (TCR) complex plays a central role in the T-cell-mediated immunoresponse as it is involved in the recognition of antigens and subsequent signal transduction and activation of immunocompetent T lymphocytes. Because CD3 is required for T cell activation, drugs (often monoclonal antibodies) that target it are being investigated as immunosuppressant therapies (e.g., otelixizumab, teplizumab) for type 1 diabetes and other autoimmune diseases.
WB result of CD3 epsilonRabbit mAb
Primary antibody: CD3 epsilon Rabbit mAb at 1/500 dilution
Lane 1: Raji whole cell lysate 20 µg
Lane 2: Jurkat whole cell lysate 20 µg
Negative control: Raji whole cell lysate
Secondary antibody: Goat Anti-Rabbit IgG, (H+L), HRP conjugated at 1/10000 dilution
Predicted MW: 24kDa
Observed MW: 21kDa
CD3 epsilon Rabbit mAb at 1/25 dilution (1 µg) immunoprecipitating CD3 epsilon in 0.4 mg Jurkat whole cell lysate.
Western blot was performed on the immunoprecipitate using CD3 epsilon Rabbit mAb at 1/1000 dilution.
Secondary antibody (HRP) for IP was used at 1/400 dilution.
Lane 1: Jurkat whole cell lysate 40 µg (Input)
Lane 2: CD3 epsilon Rabbit mAb IP in Jurkat whole cell lysate
Lane 3: Rabbit monoclonal IgG IP in Jurkat whole cell lysate
Predicted MW: 24 kDa
Observed MW: 24 kDa
IHC shows positive staining in paraffin-embedded human colon. Anti-CD3 epsilon antibody was used at 1/2500 dilution, followed by a HRP Polymer for Mouse & Rabbit IgG (ready to use). Counterstained with hematoxylin. Heat mediated antigen retrieval with Tris/EDTA buffer pH9.0 was performed before commencing with IHC staining protocol.
IHC shows positive staining in paraffin-embedded human spleen. Anti-CD3 epsilon antibody was used at 1/2500 dilution, followed by a HRP Polymer for Mouse & Rabbit IgG (ready to use). Counterstained with hematoxylin. Heat mediated antigen retrieval with Tris/EDTA buffer pH9.0 was performed before commencing with IHC staining protocol.
IHC shows positive staining in paraffin-embedded human tonsil. Anti-CD3 epsilon antibody was used at 1/2500 dilution, followed by a HRP Polymer for Mouse & Rabbit IgG (ready to use). Counterstained with hematoxylin. Heat mediated antigen retrieval with Tris/EDTA buffer pH9.0 was performed before commencing with IHC staining protocol.
IHC shows positive staining in paraffin-embedded human NK/T cell lymphoma. Anti-CD3 epsilon antibody was used at 1/2500 dilution, followed by a HRP Polymer for Mouse & Rabbit IgG (ready to use). Counterstained with hematoxylin. Heat mediated antigen retrieval with Tris/EDTA buffer pH9.0 was performed before commencing with IHC staining protocol.
Negative control: IHC shows negative staining in paraffin-embedded human testis. Anti-CD3 epsilon antibody was used at 1/2500 dilution, followed by a HRP Polymer for Mouse & Rabbit IgG (ready to use). Counterstained with hematoxylin. Heat mediated antigen retrieval with Tris/EDTA buffer pH9.0 was performed before commencing with IHC staining protocol.
IHC shows positive staining in paraffin-embedded mouse spleen. Anti-CD3 epsilon antibody was used at 1/2500 dilution, followed by a HRP Polymer for Mouse & Rabbit IgG (ready to use). Counterstained with hematoxylin. Heat mediated antigen retrieval with Tris/EDTA buffer pH9.0 was performed before commencing with IHC staining protocol.
IHC shows positive staining in paraffin-embedded rat spleen. Anti-CD3 epsilon antibody was used at 1/2500 dilution, followed by a HRP Polymer for Mouse & Rabbit IgG (ready to use). Counterstained with hematoxylin. Heat mediated antigen retrieval with Tris/EDTA buffer pH9.0 was performed before commencing with IHC staining protocol.
