{"product_id":"epha4-antibody-ephrin-type-a-receptor-4-bha17135420","title":"EPHA4 Antibody \/ Ephrin type-A receptor 4","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eEPHA4 Antibody \/ Ephrin type-A receptor 4 is a anti-EPHA4 Rabbit antibody Polyclonal (rabbit origin) supplied in Lyophilized format. Recommended for workflows such as Western blot (WB) with listed reactivity in Human.\u003c\/p\u003e\u003ch2\u003eKey elements and design rationale\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTarget:\u003c\/strong\u003e EPHA4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAntibody details:\u003c\/strong\u003e Rabbit, Polyclonal (rabbit origin), isotype Rabbit IgG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFormat:\u003c\/strong\u003e Lyophilized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplications (as listed):\u003c\/strong\u003e WB\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eBiological background\u003c\/h2\u003e\u003cdiv\u003eEPHA4 antibody detects Ephrin type-A receptor 4, a receptor tyrosine kinase that mediates axon guidance, cell adhesion, and tissue patterning through bidirectional ephrin signaling. EPHA4 belongs to the Eph receptor family, the largest group of receptor tyrosine kinases in vertebrates. The EPHA4 antibody is used extensively in neuroscience, developmental biology, and cancer research to investigate cell-cell communication and guidance signaling.\u003cbr\u003e\u003cbr\u003eEPHA4 is encoded by the EPHA4 gene on human chromosome 2q36.1. The receptor consists of an extracellular ligand-binding domain, a cysteine-rich region, two fibronectin type III repeats, a single transmembrane domain, and an intracellular kinase domain. EPHA4 binds both ephrin-A and ephrin-B ligands, enabling cross-class signaling that regulates axonal navigation, synaptic plasticity, and tissue boundary formation.\u003cbr\u003e\u003cbr\u003eThe EPHA4 antibody detects a 120-130 kilodalton transmembrane receptor by western blot. Activation of EPHA4 by ephrin ligands triggers receptor autophosphorylation, recruitment of adaptor proteins, and cytoskeletal reorganization via Rho GTPase signaling. This leads to growth cone collapse and repulsion, essential for proper neural circuit formation.\u003cbr\u003e\u003cbr\u003eIn the central nervous system, EPHA4 influences axon pathfinding in the corticospinal tract and regulates synapse formation and plasticity. It is also implicated in spinal cord injury response, where its inhibition promotes axonal regeneration. Outside the nervous system, EPHA4 modulates angiogenesis, epithelial morphogenesis, and tumor progression. Overexpression has been observed in breast, prostate, and colorectal cancers, correlating with invasive behavior and poor prognosis.\u003cbr\u003e\u003cbr\u003eEPHA4 signaling crosstalks with pathways including MAPK, PI3K-Akt, and JAK-STAT, integrating environmental cues with cell motility and survival. Genetic ablation in animal models results in abnormal axon targeting and motor coordination defects.\u003c\/div\u003e\u003ch2\u003eResearch relevance and current trends\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eConnecting protein-level changes to phenotype using orthogonal readouts (genetic perturbation, transcriptomics, imaging).\u003c\/li\u003e\n\u003cli\u003eConsidering isoforms and post-translational regulation when interpreting protein-level changes.\u003c\/li\u003e\n\u003cli\u003eComparing results across species and model systems with matched controls.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCommon research applications\u003c\/h2\u003e\u003cul\u003e\u003cli\u003e\n\u003cstrong\u003eWestern blotting:\u003c\/strong\u003e compare relative abundance and activation-state changes across conditions.\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003eInterpret changes in signal alongside appropriate controls and, when relevant, in parallel with total-protein or pathway readouts.\u003c\/p\u003e\u003ch2\u003eNotes for experimental interpretation\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eSignal can reflect expression level, isoform composition, and post-translational state; interpret results in the context of your model system and stimuli.\u003c\/li\u003e\n\u003cli\u003eSpecies differences and sample matrices can influence epitope recognition; prioritize matched controls and orthogonal confirmation when feasible.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eAntibody notes:\u003c\/strong\u003e Polyclonal antibodies recognize multiple epitopes, which can broaden the epitope footprint and may increase sensitivity in some contexts.\u003c\/p\u003e\u003c!-- Sources (internal): - UniProt search — UniProt — https:\/\/www.uniprot.org\/uniprotkb?query=EPHA4 - NCBI Gene search — NCBI — https:\/\/www.ncbi.nlm.nih.gov\/gene\/?term=EPHA4 - Ensembl search — Ensembl — https:\/\/www.ensembl.org\/Multi\/Search\/Results?q=EPHA4 - Human Protein Atlas search — HPA — https:\/\/www.proteinatlas.org\/search\/EPHA4 - PubMed (review) — NLM — https:\/\/pubmed.ncbi.nlm.nih.gov\/?term=EPHA4+review --\u003e","brand":"NSJ Bioreagents","offers":[{"title":"Adding 0.2 ml of distilled water will yield a concentration of 500 ug\/ml \/ 100 ug","offer_id":53047290855789,"sku":"FY12517","price":449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/get_image_c0de834c-49c4-4144-8884-69c8e14bf9bf.jpg?v=1782237015","url":"https:\/\/www.ebiohippo.com\/products\/epha4-antibody-ephrin-type-a-receptor-4-bha17135420","provider":"BioHippo","version":"1.0","type":"link"}