| Field | Specification |
|---|---|
| Mfr No | |
| Clonality | |
| Host | |
| Immunogen | A synthetic peptide corresponding to a sequence at the C-terminus of human IER3 was used as the immunogen for the IER3 antibody. |
| Isotype | |
| Product Type | |
| Purity | |
| Reactivity | |
| Storage | |
| Target | |
| UniProt # |
Overview
IER3 Antibody / Immediate early response gene 3 is a anti-IER3 Rabbit antibody Polyclonal (rabbit origin) supplied in Lyophilized format. Recommended for workflows such as Western blot (WB), Immunohistochemistry (IHC), Flow cytometry (FACS) with listed reactivity in Human.
Key elements and design rationale
- Target: IER3
- Antibody details: Rabbit, Polyclonal (rabbit origin), isotype Rabbit IgG
- Format: Lyophilized
- Applications (as listed): WB, IHC, FACS
Biological background
Functionally, IER3 antibody targets a multifunctional protein that modulates apoptosis by interacting with BCL2 family members and regulating mitochondrial membrane potential. It can act as either pro- or anti-apoptotic depending on cell context and stimulus. IER3 has been implicated in cell cycle control, stress tolerance, and immune regulation, with overexpression protecting cells from TNF-induced apoptosis via suppression of caspase-3 activation. Conversely, downregulation promotes sensitivity to radiation and chemotherapeutic stress, linking IER3 to cancer therapy resistance mechanisms.
IER3 localizes mainly to the cytoplasm but can also translocate to the nucleus in certain stress conditions. The IER3 antibody is valuable for monitoring expression patterns across tissues, including spleen, thymus, and epithelial cells, and in cancers such as leukemia, breast, and colon carcinoma. The IER3 gene is located on chromosome 6p21.33, close to the major histocompatibility complex (MHC) region, encoding a 156-amino acid protein. Its promoter contains NF-kappaB binding sites, allowing rapid induction following stress or infection. IER3 acts as a negative feedback regulator in immune responses, balancing cytokine signaling and cellular resilience.
IER3 also regulates ERK and AKT phosphorylation states, controlling cellular energy metabolism and proliferation. Its modulation of mitochondrial ATP synthase interaction contributes to ROS balance.
Through its unique duality in regulating cell survival, IER3 remains a critical molecular switch in stress adaptation, immune tolerance, and oncogenesis.
Research relevance and current trends
- Connecting protein-level changes to phenotype using orthogonal readouts (genetic perturbation, transcriptomics, imaging).
- Considering isoforms and post-translational regulation when interpreting protein-level changes.
- Comparing results across species and model systems with matched controls.
Common research applications
- Western blotting: compare relative abundance and activation-state changes across conditions.
- Immunohistochemistry: map target signal in tissue context and compare regions/phenotypes.
- Flow cytometry: quantify target-positive populations and signal shifts at single-cell resolution.
Interpret changes in signal alongside appropriate controls and, when relevant, in parallel with total-protein or pathway readouts.
Notes for experimental interpretation
- Signal can reflect expression level, isoform composition, and post-translational state; interpret results in the context of your model system and stimuli.
- Species differences and sample matrices can influence epitope recognition; prioritize matched controls and orthogonal confirmation when feasible.
Antibody notes: Polyclonal antibodies recognize multiple epitopes, which can broaden the epitope footprint and may increase sensitivity in some contexts.
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.
