| Field | Specification |
|---|---|
| Mfr No | |
| Alternative Names | Cytotoxic T-lymphocyte protein 4;Cytotoxic T-lymphocyte-associated antigen 4;CTLA-4;CD152;Ctla4;Cd152; |
| Cellular Localization | |
| Clonality | |
| Concentration | |
| Host | |
| Immunogen | E. coli-derived mouse CTLA4 recombinant protein (Position: E36-D161). Mouse CTLA4 shares 67.5% amino acid (aa) sequence identity with human CTLA4. |
| Isotype | |
| Molecular Weight | |
| Product Type | |
| Reactivity | |
| Reconstitution | |
| Target | |
| UniProt # |
Overview
This antibody is intended for detection of Ctla4 (Receptor tyrosine-protein kinase erbB-2) in biological samples using common immunoassay formats. It is typically selected based on target identity, species reactivity, clonality/clone information, and detection modality.
Vendor notes: Boster Bio Anti-CTLA4 Antibody Picoband® catalog # A00020-1. Tested in ELISA, IHC, WB applications. This antibody reacts with Mouse, Rat. The brand Picoband indicates this is a premium antibody that guarantees superior quality, high affinity, and strong signals with minimal background in Western blot applications. Only our best-performing antibodies are designated as Picoband, ensuring unmatched performance.
Key elements and design rationale
- Antibody format: Rabbit Polyclonal Rabbit IgG
- Immunogen / epitope context: E. coli-derived mouse CTLA4 recombinant protein (Position: E36-D161). Mouse CTLA4 shares 67.5% amino acid (aa) sequence identity with human CTLA4. (reported region: E36-D161).
- Molecular weight context: reported MW: 25 kDa; calculated MW: 24993 MW
- Reactivity: Mouse,Rat
- Applications: ELISA, IHC, WB
As a polyclonal antibody, the reagent recognizes multiple epitopes on the target, which can improve detection robustness but may increase sensitivity to sample-dependent epitope changes.
Biological background
Receptor tyrosine-protein kinase erbB-2; Cytotoxic T-lymphocyte protein 4. CTLA-4 (Cytotoxic T-Lymphocyte Antigen 4), also known as CD152, is a protein receptor that down regulates the immune system. It is a member of the immunoglobulin superfamily, which is expressed on the surface of Helper T cells and transmits an inhibitory signal to T cells. CTLA4 is similar to the T-cell co-stimulatory protein, CD28, and both molecules bind to CD80 and CD86, also called B7-1 and B7-2 respectively, on antigen-presenting cells. CTLA4 transmits an inhibitory signal to T cells, whereas CD28 transmits a stimulatory signal. Blockade of CTLA4 expression in vitro augmented HIV-specific CD4-positive T-cell function. Functional note: Inhibitory receptor acting as a major negative regulator of T-cell responses. The affinity of CTLA4 for its natural B7 family ligands, CD80 and CD86, is considerably stronger than the affinity of their cognate stimulatory coreceptor CD28 (By similarity). . Reported localization: Cell membrane ; Single-pass type I membrane protein . Expression/tissue context: Widely expressed with highest levels in lymphoid tissues. .
Research relevance and current trends
- T Cells: Researchers commonly examine how Ctla4 (Receptor tyrosine-protein kinase erbB-2) relates to this theme using model systems and orthogonal readouts.
- T Lymphocytic Lineage: Researchers commonly examine how Ctla4 (Receptor tyrosine-protein kinase erbB-2) relates to this theme using model systems and orthogonal readouts.
Common research applications
- Western blotting: compare relative Ctla4 (Receptor tyrosine-protein kinase erbB-2) levels across conditions; band patterns may reflect isoforms and processing.
- IHC/IHC-F: assess spatial distribution of Ctla4 (Receptor tyrosine-protein kinase erbB-2) across tissue regions and cell types using matched controls.
- ELISA-compatible use: when applicable, interpret signal as relative abundance across sample sets with consistent handling and dilution strategy.
Notes for experimental interpretation
- Specificity notes: No cross reactivity with other proteins.
- Cross-reactivity: No cross-reactivity with other proteins.
- Isoforms and PTMs: Apparent size and signal patterns can differ across splice isoforms, proteolytic processing, and post-translational modifications.
- Controls: Include an isotype control (as relevant), no-primary control for imaging, and orthogonal validation such as KD/KO samples when available.
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.
