ISG15 Protein, Bovine, Recombinant (His)

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.

Pack Size	Availability	Price/USD
20 μg	20 days	$ 360.00
100 μg	20 days	$ 678.00
1 mg	20 days	$ 2,300.00

Pack Size

Availability

Price/USD

Quantity

20 μg

20 days

$ 360.00

100 μg

20 days

$ 678.00

1 mg

20 days

$ 2,300.00

Description

Species	Bovine
Expression System	E. coli
Tag	N-terminal 6xHis-tagged
Accession Number	O02741
Amino Acid	MGGDLTVKMLGGQEILVPLRDSMTVSELKQFIAQKINVPAFQQRLAHLDSREVLQEGVPLVLQGLRAGSTVLLVVQNCISILVRNDKGRSSPYEVQLKQTVAELKQQVCQKERVQADQFWLSFEGRPMDDEHPLEEYGLMKGCTVFMNLRLRGG Note: The complete sequence including tag sequence, target protein sequence and linker sequence could be provided upon request.
Construction	1-154 aa
Protein Purity	> 85% as determined by SDS-PAGE.
Molecular Weight	21.4 kDa (predicted)

Formulation	Tris-based buffer，50% glycerol
Reconstitution	A hardcopy of COA with reconstitution instructions is sent along with the products. Please refer to it for detailed information.
Stability & Storage	Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Shipping	In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature. Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise.
Research Background	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.

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ISG15 Protein, Bovine, Recombinant (His)

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