Animal-Free IFN-gamma Protein, Mouse (His)

IFN-gamma is a type II interferon family cytokine that participates in antiviral, antibacterial, and antitumor responses. Animal-Free IFN-gamma Protein, Mouse (His) is the recombinant mouse-derived animal-FreeIFN-gamma protein, expressed by E. coli , with C-His labeled tag. The total length of Animal-Free IFN-gamma Protein, Mouse (His) is 133 a.a., with molecular weight of ~16.5 kDa.

IFN-gamma is produced by immune cells such as T cells and NK cells, and plays a key role in antibacterial, antiviral, and antitumor responses by activating effector immune cells and enhancing antigen presentation^[1][2][5][6].FN-gamma is involved in the regulation of hematopoietic stem cells under developmental and steady-state conditions by affecting their development, quiescence, and differentiation^[3][4].IFN-gamma increases the susceptibility of cancer cells to external and internal apoptosis pathways by regulating the expression of Fas/FasL, TNF-related apoptosis-inducing ligand (TRAIL), caspase-8, -3, -7, and -1, survivin, and Bim^[5].IFN-gamma mainly interacts with its receptor IFNGR1 through the JAK-STAT pathway to affect gene regulation. After binding to the receptor, the intracellular domain of IFNGR1 opens, allowing downstream signaling elements JAK2, JAK1, and STAT1 to bind, resulting in STAT1 activation, nuclear translocation, and IFN-gamma-regulated gene transcription^[6].IFN-gamma achieves antiviral effects by inducing RNA-activated protein kinase R (PKR) and adenosine deaminase RNA-specific-1 (ADAR-1) to activate antiviral proteins^[6].IFN-gamma can inhibit the production of IL-4 by TH1 cells and maintain the sustained expression of T-bet^[7].As a central effector of cell-mediated immunity, IFN-gamma can enhance antigen recognition through interactions with homologous T cells, amplify antigen presentation through antigen-presenting cells (APCs), increase the production of reactive oxygen species (ROS) and reactive nitrogen intermediates (RNIs), and induce antiviral responses^[8].

Measure by its ability to anti-viral assay in L-929 cells infected with encephalomyocarditis (EMC) virus. The ED₅₀ for this effect is <0.5 ng/mL. The specific activity of recombinant mouse IFN gamma is approximately >2x10⁶ IU/mg

Mouse

E. coli

C-His

P01580 (H23-C155)

15978  [NCBI]

MHGTVIESLESLNNYFNSSGIDVEEKSLFLDIWRNWQKDGDMKILQSQIISFYLRLFEVLKDNQAISNNISVIESHLITTFFSNSKAKKDAFMSIAKFEVNNPQVQRQAFNELIRVVHQLLPESSLRKRKRSRC

Approximately 16.5 kDa

Greater than 95% as determined by reducing SDS-PAGE.

Lyophilized powder

Lyophilized from a solution containing 1X PBS, pH 7.4, trehalose.

<0.01 EU per 1 μg of the protein by the LAL method.

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH₂O. For long term storage it is recommended to add a carrier protein (0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose).

Stored at -20°C for 2 years. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.

Room temperature in continental US; may vary elsewhere.