hh Human Occludin Antibody MAB7074: R&D Systems

Human Occludin Antibody

  
  • Species Reactivity
    Human
  • Specificity
    Detects human Occludin in direct ELISAs.
  • Source
    Monoclonal Mouse IgG1 Clone # 690213
  • Purification
    Protein A or G purified from hybridoma culture supernatant
  • Immunogen
    NS0 mouse myeloma cell line transfected with human Occludin
    Accession # Q16625
  • Formulation
    Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
  • Label
    Unconjugated
Applications
  •  
    Recommended
    Concentration
    Sample
  • Immunocytochemistry
    8-25 µg/mL
    See below
Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.
Data Examples
Immunocytochemistry
Occludin in HUVEC Human Cells. Occludin was detected in immersion fixed HUVEC human umbilical vein endothelial cells using Mouse Anti-Human Occludin Monoclonal Antibody (Catalog # MAB7074) at 10 µg/mL for 3 hours at room temperature. Cells were stained using the Northern­Lights™ 557-conjugated Anti-Mouse IgG Secondary Antibody (red; Catalog # NL007) and counterstained with DAPI (blue). Specific staining was localized to cytoplasm. View our protocol for Fluorescent ICC Staining of Cells on Coverslips.
Preparation and Storage
  • Reconstitution
    Sterile PBS to a final concentration of 0.5 mg/mL.
  • Shipping
    The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
  • Stability & Storage
    Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
    • 12 months from date of receipt, -20 to -70 °C as supplied.
    • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
    • 6 months, -20 to -70 °C under sterile conditions after reconstitution.
Background: Occludin
Occludin is an integral membrane protein with an apparent molecular mass of approximately 65 kDa.  It is localized exclusively at tight junctions (TJ) of select epithelial and endothelial cells.  The protein is 522 amino acids (aa) in length and contains a cytoplasmic N-terminus, four transmembrane domains, and a long COOH‑terminal cytoplasmic domain (domain E) that contains 255 aa.  Residues 1-66 make up the first cytoplasmic domain, and that is included in the MARVEL region consisting of aa 57-210.  The MARVEL region is a membrane-associating domain that spans aa 67-243.  Of note, residues 92-131 are glycine and tyrosine rich.  Residues 244-265 constitute the last transmembrane region, with aa 266-522 representing the long cytoplasmic domain termed domain E.  At the TJ, Occludin associates with membrane peripheral protein ZO-1 (220 kDa).  Human Occludin shares 90% aa sequence identity with mouse Occludin.
  • Entrez Gene IDs:
    100506658 (Human); 18260 (Mouse); 83497 (Rat)
  • Alternate Names:
    BLCPMG; Occludin; OCLN
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