{"product_id":"cst-2743s","title":"CST,  2743S, ISG15 Antibody","description":"Polyclonal Antibody for studying ISG15. Validated for Western Blotting. Highly specific and rigorously validated in-house, ISG15 Antibody (CST #2743) is ready to ship.\n\n\u003cb\u003eProduct Usage Information\u003c\/b\u003e\nWestern Blotting: 1:1000\n\u003cb\u003eStorage\u003c\/b\u003e\nSupplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg\/ml BSA and 50% glycerol. Store at -20°C. Do not aliquot the antibody.\n\u003cb\u003eProtocol\u003c\/b\u003e\nAvailable protocols: Western Blotting\n\u003cb\u003eSpecificity \/ Sensitivity\u003c\/b\u003e\nISG15 Antibody detects endogenous levels of both free and conjugated ISG15 protein. This antibody does not cross-react with other ubiquitin family members, including ubiquitin, SUMO1, SUMO2, SUMO3 and NEDD8.\nSpecies Reactivity: Human, Mouse, Monkey\n\u003cb\u003eSource \/ Purification\u003c\/b\u003e\nPolyclonal antibodies are produced by immunizing animals with a synthetic peptide corresponding to amino acids from human ISG15 protein. Antibodies are purified by protein A and peptide affinity chromatography.\n\u003cb\u003eBackground\u003c\/b\u003e\nInterferon-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).\n\u003cb\u003eAlternate Names\u003c\/b\u003e\nG1P2; 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\n\n\u003cb\u003eSpecification\u003c\/b\u003e\n\nREACTIVITY: H M Mk\nSENSITIVITY: Endogenous\nMW (kDa): 15\nSOURCE: Rabbit","brand":"CST","offers":[{"title":"Default Title","offer_id":46797978730665,"sku":"2743S","price":0.99,"currency_code":"USD","in_stock":true}],"url":"https:\/\/iright.com\/products\/cst-2743s","provider":"Iright","version":"1.0","type":"link"}