Date published: 2026-10-17

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spectrin beta III Antibody (4D9): sc-293284

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  • spectrin β III Antibody (4D9) is a mouse monoclonal IgG3 κ provided at 100 µg/ml
  • raised against a partial recombinant protein mapping within amino acids 643-720 of spectrin β III of human origin
  • recommended for detection of spectrin β III of mouse, rat and human origin by WB, IP and ELISA
  • At present, we have not yet completed the identification of the preferred secondary detection reagent(s) for spectrin β III Antibody (4D9). This work is in progress.
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    spectrin β III Antibody (4D9) is a mouse monoclonal IgG3 antibody that detects spectrin β III in mouse, rat, and human samples through applications such as western blotting (WB), immunoprecipitation (IP), and enzyme-linked immunosorbent assay (ELISA). Spectrin β III plays a crucial role in maintaining the structural integrity of the cytoskeleton, particularly within the Golgi apparatus and vesicular membranes, where spectrin β III contributes to the organization and stability of these cellular structures. Spectrin β III is essential for proper intracellular transport and communication, as spectrin β III helps to anchor membrane proteins and facilitates the movement of vesicles, thereby influencing various cellular processes such as secretion and signal transduction. Notably, spectrin β III is highly expressed in the brain, kidney, pancreas, and liver, highlighting spectrin β III′s importance in these organs′ cellular architecture and function. The unique structural properties of spectrin β III, including spectrin β III′s ability to form dimers and higher-order oligomers, allow effective interaction with other cytoskeletal components, ensuring the resilience and adaptability of the cellular framework. Anti-spectrin β III antibody (4D9) is an invaluable tool for researchers studying the dynamics of the cytoskeleton and its implications in health and disease.

    For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.

    Alexa Fluor® is a trademark of Molecular Probes Inc., OR., USA

    LI-COR® and Odyssey® are registered trademarks of LI-COR Biosciences

    spectrin beta III Antibody (4D9) References:

    1. Monitoring the expression profiles of doxorubicin-resistant K562 human leukemia cells by serial analysis of gene expression.  |  Ichikawa, Y., et al. 2004. Int J Hematol. 79: 276-82. PMID: 15168598
    2. Advances and perspectives of the architecture of hemidesmosomes: lessons from structural biology.  |  de Pereda, JM., et al. 2009. Cell Adh Migr. 3: 361-4. PMID: 19736524
    3. β-III spectrin underpins ankyrin R function in Purkinje cell dendritic trees: protein complex critical for sodium channel activity is impaired by SCA5-associated mutations.  |  Clarkson, YL., et al. 2014. Hum Mol Genet. 23: 3875-82. PMID: 24603075
    4. A human β-III-spectrin spinocerebellar ataxia type 5 mutation causes high-affinity F-actin binding.  |  Avery, AW., et al. 2016. Sci Rep. 6: 21375. PMID: 26883385
    5. β-III-spectrin spinocerebellar ataxia type 5 mutation reveals a dominant cytoskeletal mechanism that underlies dendritic arborization.  |  Avery, AW., et al. 2017. Proc Natl Acad Sci U S A. 114: E9376-E9385. PMID: 29078305
    6. β-III-spectrin immunohistochemistry as a potential diagnostic tool with high sensitivity for malignant peripheral nerve sheath tumors.  |  Hirbe, AC., et al. 2018. Neuro Oncol. 20: 858-860. PMID: 29596596
    7. SPTBN2, a New Biomarker of Lung Adenocarcinoma.  |  Wu, C., et al. 2021. Front Oncol. 11: 754290. PMID: 34745988
    8. Early-phase drug discovery of β-III-spectrin actin-binding modulators for treatment of spinocerebellar ataxia type 5.  |  Guhathakurta, P., et al. 2023. J Biol Chem. 299: 102956. PMID: 36731793
    9. Increased Actin Binding Is a Shared Molecular Consequence of Numerous SCA5 Mutations in β-III-Spectrin.  |  Atang, AE., et al. 2023. Cells. 12: PMID: 37626910
    10. Molecular consequences of SCA5 mutations in the spectrin-repeat domains of β-III-spectrin.  |  Denha, SA., et al. 2024. bioRxiv.. PMID: 39345584

    Ordering Information

    Product NameCatalog #UNITPriceQtyFAVORITES

    spectrin β III Antibody (4D9)

    sc-293284
    100 µg/ml
    $322.00