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PathScan® RP ISG15 Sandwich ELISA Kit #24546

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  • ELISA+

Important Ordering Details

Custom Ordering Details:

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    Product Specifications

    REACTIVITY H
    Application Key:
    • ELISA+-ELISA and/or ELISA-like Assays 
    Species Cross-Reactivity Key:
    • H-Human 

    Product Information

    Product Description

    The rapid protocol (RP) PathScan® RP ISG15 Sandwich ELISA Kit is a solid phase sandwich enzyme-linked immunosorbent assay (ELISA) that detects endogenous levels of ISG15 protein in a reduced assay time of 1.5 hours. Incubation of cell lysates and detection antibody on the coated microwell plate forms a sandwich with ISG15 in a single step. The plate is then extensively washed and TMB reagent is added for signal development. The magnitude of absorbance for the developed color is proportional to the quantity of ISG15 protein. Learn more about your ELISA kit options here.

    *Antibodies in this kit are custom formulations specific to kit.

    Protocol

    Specificity / Sensitivity

    The PathScan® RP ISG15 Sandwich ELISA Kit detects endogenous levels of ISG15 protein. The kit sensitivity is shown in Figure 1. This kit detects proteins from the indicated species, as determined through in-house testing, but may also detect homologous proteins from other species.

    Species Reactivity:

    Human

    Background

    Interferon-stimulated 15 kDa protein (ISG15), also known as ubiquitin cross-reactive protein (UCRP), is a member of the ubiquitin-like protein family and functions in various biological pathways from pregnancy to innate immune responses (1). Expression of ISG15 is stimulated by cellular exposure to type 1 interferons α and β, in addition to infection with viruses such as influenza B (2,3). After exposure to type I interferons, both lymphocytes and monocytes, in addition to some fibroblasts and epithelial cells, release ISG15 into culture medium (1,4). ISG15 has been shown to function as a cytokine, stimulating interferon γ secretion by monocytes and macrophages, proliferation of natural killer cells, and chemotactic responses in neutrophils (4,5). ISG15 has also been shown to function intracellularly, being covalently conjugated to other proteins by E1 (Ube1L), E2 (UbcH8), and E3 ligases via a multi-step process analogous to ubiquitination (6,7). ISG15 is removed from proteins by the ubiquitin processing protease Ubp43 (8). ISG15-protein conjugation (ISGylation) is induced by type 1 interferons, and target proteins include the serine protease inhibitor Serpin 2A, PLCγ1, ERK1/2, Jak1, and Stat1 (9,10). Unlike ubiquitination, ISGylation does not target proteins for degradation, rather ISGylation increases Jak1 and Stat1 activity, enhancing the cellular response to interferons (11).

    Alternate Names

    G1P2; hUCRP; IFI15; IMD38; Interferon-induced 15 kDa protein; Interferon-induced 17 kDa protein; interferon-induced 17-kDa/15-kDa protein; interferon-stimulated protein, 15 kDa; interferon, alpha-inducible protein (clone IFI-15K); IP17; ISG15; ISG15 ubiquitin like modifier; ISG15 ubiquitin-like modifier; Ubiquitin cross-reactive protein; Ubiquitin-like protein ISG15; UCRP

    For Research Use Only. Not for Use in Diagnostic Procedures.
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