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Your Position: Home > Protein > B7-H2 > B72-H5254

Human B7-H2 / ICOSLG Protein, Fc Tag

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  • Synonym
    ICOSLG,B7-H2,B7H2,B7RP-1,B7RP1,CD275,GL50,ICOS-L,ICOSL,LICOS,ICOS ligand
  • Source
    Human B7-H2, Fc Tag (B72-H5254) is expressed from human 293 cells (HEK293). It contains AA Asp 19 - Ser 258 (Accession # O75144-1).
    Predicted N-terminus: Asp 19
  • Molecular Characterization
    Online(Asp 19 - Ser 258) O75144-1

    This protein carries a human IgG1 Fc tag at the C-terminus.

    The protein has a calculated MW of 53.1 kDa. The protein migrates as 66-90 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.

  • Endotoxin
    Less than 1.0 EU per μg by the LAL method.
  • Purity

    >95% as determined by SDS-PAGE.

  • Formulation

    Lyophilized from 0.22 μm filtered solution in Tris with Glycine, Arginine and NaCl, pH7.5. Normally trehalose is added as protectant before lyophilization.

    Contact us for customized product form or formulation.

  • Reconstitution

    Please see Certificate of Analysis for specific instructions.

    For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.

  • Storage

    For long term storage, the product should be stored at lyophilized state at -20°C or lower.

    Please avoid repeated freeze-thaw cycles.

    This product is stable after storage at:

    1. -20°C to -70°C for 12 months in lyophilized state;

    2. -70°C for 3 months under sterile conditions after reconstitution.

SDS-PAGE
Human B7-H2, Fc Tag (Cat. No. B72-H5254) SDS-PAGE gel

Human B7-H2, Fc Tag on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 95%.

Bioactivity-ELISA
Human B7-H2, Fc TagHuman B7-H2, Fc Tag (Cat. No. B72-H5254) ELISA bioactivity

Immobilized Human ICOS (C136S, C137S), His Tag (Cat. No. ICS-H52H6) at 5 μg/mL (100 μL/well) can bind Human B7-H2, Fc Tag (Cat. No. B72-H5254) with a linear range of 0.3-5 ng/mL (QC tested).

  • Citations
  • Background
    ICOS ligand (ICOSLG) is also known as B7 homolog 2 (B7-H2), B7-related protein 1 (B7RP-1) and CD antigen CD275, which belongs to the immunoglobulin superfamily and BTN/MOG family. ICOSLG contains one Ig-like C2-type (immunoglobulin-like) domain and one Ig-like V-type (immunoglobulin-like) domain. Isoform 1 is widely expressed, while isoform 2 is detected only in lymph nodes, leukocytes and spleen. B7-H2 is ligand for the T-cell-specific cell surface receptor ICOS. B7-H2 acts as a costimulatory signal for T-cell proliferation and cytokine secretion and induces also B-cell proliferation and differentiation into plasma cells. B7-H2 could play an important role in mediating local tissue responses to inflammatory conditions, as well as in modulating the secondary immune response by co-stimulating memory T-cell function.
  • Clinical and Translational Updates
  • Please contact us via TechSupport@acrobiosystems.com if you have any question on this product.

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