| Field | Specification |
|---|---|
| Mfr No | |
| Alternative Names | Transcriptional repressor CTCF;11-zinc finger protein;CCCTC-binding factor;CTCFL paralog;CTCF; |
| Cellular Localization | |
| Clonality | |
| Concentration | |
| Form | Liquid |
| Gene ID | |
| Host | |
| Immunogen | A synthesized peptide derived from human EIF4E eIF4E, a protein modulates translation of maternal mRNAs in early embryos before the onset of zygotic transcription. eIF4E also influences the overall rate of translation. eIF4E binds to the 7 methyl GTP cap structure of eukaryotic mRNAs. Phosphorylation of eIF4E on serine 209 regulates the affinity of this protein for the 7 methyl GTP cap and/or RNA. Phosphorylation also enhances the interaction of eIF4E with eIF4G, which form a complex known as eIF4F. eIF4E phosphorylation is correlated with increased translational rate in a number of cell types. |
| Isotype | |
| Molecular Weight | |
| Product Type | |
| Reactivity | |
| Reconstitution | |
| Storage | |
| Target | |
| UniProt # |
Overview
This product is an anti-EIF4E antibody for target detection and characterization. Key identifiers include host species: Rabbit; Monoclonal; clone AFHI-5; isotype Rabbit IgG; reactivity: Human,Mouse,Rat. Reported application contexts include WB, IHC, IP, Flow (as provided in the source record). Boster Bio Anti-EIF4E Monoclonal Antibody catalog # M00135. Tested in WB, IHC, IP, Flow Cytometry applications. This antibody reacts with Human, Mouse, Rat.
Key elements and design rationale
- Target: EIF4E (Transcriptional repressor CTCF).
- Antibody format: Monoclonal; clone AFHI-5; isotype Rabbit IgG.
- Host: Rabbit.
- Species reactivity: Human,Mouse,Rat (confirm in your model system with appropriate controls).
This description is intended to help interpret the antibody design and the biological context of the target using the fields provided in the catalog record, alongside general experimental considerations.
Biological background
EIF4E (protein: P2X purinoceptor 1) is a commonly studied target in molecular and cellular biology. Functional context (as provided): Chromatin binding factor that binds to DNA sequence specific sites. Involved in transcriptional regulation by binding to chromatin insulators and preventing interaction between promoter and nearby enhancers and silencers. Acts as transcriptional repressor binding to promoters of vertebrate MYC gene and BAG1 gene. Also binds to the PLK and PIM1 promoters. Acts as a transcriptional activator of APP. Regulates APOA1/C3/A4/A5 gene cluster and controls MHC class II gene expression. Plays an essential role in oocyte and preimplantation embryo development by activating or repressing transcription. Seems to act as tumor suppressor. Plays a critical role in the epigenetic regulation. Participates in the allele-specific gene expression at the imprinted IGF2/H19 gene locus. On the maternal allele, binding within the H19 imprinting control region (ICR) mediates maternally inherited higher-order chromatin conformation to restrict enhancer access to IGF2. Plays a critical role in gene silencing over considerable distances in the genome. Preferentially interacts with unmethylated DNA, preventing spreading of CpG methylation and maintaining methylation-free zones. Inversely, binding to target sites is prevented by CpG methylation. Plays a important role in chromatin remodeling. Can dimerize when it is bound to different DNA sequences, mediating long-range chromatin looping. Mediates interchromosomal association between IGF2/H19 and WSB1/NF1 and may distant DNA segments to a common transcription factory. Causes local loss of histone acetylation and gain of histone methylation in the beta-globin locus, without affecting transcription. When bound to chromatin, it provides an anchor point for nucleosomes positioning. Seems to be essential for homologous X-chromosome pairing. May participate with Tsix in establishing a regulatable epigenetic switch for X chromosome inactivation. May play a role in preventing the propagation of stable methylation at the escape genes from X- inactivation. Involved in sister chromatid cohesion. Associates with both centromeres and chromosomal arms during metaphase and required for cohesin localization to CTCF sites. Regulates asynchronous replication of IGF2/H19. . Reported cellular localization context: Nucleus, nucleoplasm. Chromosome. Chromosome, centromere. May translocate to the nucleolus upon cell differentiation. Associates with both centromeres and chromosomal arms during metaphase. Associates with the H19 ICR in mitotic chromosomes. May be preferentially excluded from heterochromatin during interphase. Tissue expression notes (as provided): Ubiquitous. Absent in primary spermatocytes. .
Research relevance and current trends
- Research context keywords from the source record include: DNA/RNA,Epigenetics and Nuclear Signaling,RNA Processing,Translation.
- Current studies often focus on connecting target abundance/localization to pathway perturbations across models, tissues, and cell states.
- Quantitative and multiplexed assays (e.g., imaging + immunoblot panels) are commonly used to compare phenotypes across conditions and time-courses.
Common research applications
- Western blotting (WB): assess relative target abundance across samples, treatments, or time-points.
- Immunohistochemistry (IHC): evaluate spatial distribution of target-positive staining in tissue architecture.
- Flow cytometry: quantify target-positive populations and compare shifts in marker distributions.
- Immunoprecipitation (IP): enrich target complexes for downstream immunoblot or interaction analyses.
Workflow ideas (metafield): Validate EIF4E antibody specificity using KO/KD control samples (WB/IF/IHC as appropriate), Detect EIF4E expression by Western blot in cell or tissue lysates, Detect EIF4E in FFPE tissue sections by immunohistochemistry, Quantify EIF4E-positive cells by flow cytometry in single-cell suspensions, Enrich EIF4E by immunoprecipitation from lysates for downstream analysis
Notes for experimental interpretation
- Consider isoforms and post-translational modifications (PTMs) that may shift apparent molecular weight or epitope accessibility.
- Apparent molecular weight may vary by sample type and processing (observed MW: 25 kDa; calculated MW: 82785 MW).
- Control concepts: include appropriate negative controls (e.g., isotype, KO/KD samples) and orthogonal validation when feasible.
Additional product details (from the source record)
- Molecular weight (observed): 25 kDa
- Cellular localization (provided): Nucleus, nucleoplasm. Chromosome. Chromosome, centromere. May translocate to the nucleolus upon cell differentiation. Associates with both centromeres and chromosomal arms during metaphase. Associates with the H19 ICR in mitotic chromosomes. May be preferentially excluded from heterochromatin during interphase.
- Tissue details (provided): Ubiquitous. Absent in primary spermatocytes. .
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.
