ISG15 Protein, Bovine, Recombinant (His) is expressed in E. coli expression system with N-6xHis tag. The predicted molecular weight is 21.4 kDa and the accession number is O02741.

Bovine

E. coli

UCRP,Ubiquitin-like protein ISG15,Ubiquitin cross-reactive protein (BoUCRP),ISG17,ISG15,Interferon-stimulated gene product 17,G1P2

MGGDLTVKMLGGQEILVPLRDSMTVSELKQFIAQKINVPAFQQRLAHLDSREVLQEGVPLVLQGLRAGSTVLLVVQNCISILVRNDKGRSSPYEVQLKQTVAELKQQVCQKERVQADQFWLSFEGRPMDDEHPLEEYGLMKGCTVFMNLRLRGG

1-154 aa

> 85% as determined by SDS-PAGE.

A Certificate of Analysis (CoA) containing reconstitution instructions is included with the products. Please refer to the CoA for detailed information.

Lyophilized powders can be stably stored for over 12 months, while liquid products can be stored for 6-12 months at -80°C. For reconstituted protein solutions, the solution can be stored at -20°C to -80°C for at least 3 months. Please avoid multiple freeze-thaw cycles and store products in aliquots.

Ubiquitin-like protein which plays a key role in the innate immune response to viral infection either via its conjugation to a target protein (ISGylation) or via its action as a free or unconjugated protein. ISGylation involves a cascade of enzymatic reactions involving E1, E2, and E3 enzymes which catalyze the conjugation of ISG15 to a lysine residue in the target protein. Exhibits antiviral activity towards both DNA and RNA viruses. The secreted form of ISG15 can: induce natural killer cell proliferation, augment lymphokine-activated-killer (LAK) activity, induce dendritic cell maturation, act as a chemotactic factor for neutrophils and act as a IFN-gamma-inducing cytokine playing an essential role in antimycobacterial immunity. The secreted form acts through the integrin ITGAL/ITGB2 receptor to initiate activation of SRC family tyrosine kinases including LYN, HCK and FGR which leads to secretion of IFNG and IL10; the interaction is mediated by ITGAL. In response to IFN-tau secreted by the conceptus, may ligate to and regulate proteins involved in the release of prostaglandin F2-alpha (PGF), and thus prevent lysis of the corpus luteum and maintain the pregnancy.