Recombinant Human IFN-γ
Interferon gamma (IFN-γ) is a type II interferon that is critical during adaptive and innate immune responses to infection. IFN-γ is produced by T cells and natural killer cells following antigen-specific activation. IFN-γ binds IFN-γ receptors (IFN-γ R1 and IFN-γ R2), which are expressed on most immune cells, to activate the JAK-STAT pathway. IFN-γ-induced signaling increases the expression of class 1 major histocompatibility complex (MHC) molecules. Human IFN-γ is not cross-reactive with mouse IFN-γ.
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Centrifuge vial before opening. Suspend the product by gently pipetting the above recommended solution down the sides of the vial. DO NOT VORTEX. Allow several minutes for complete reconstitution. If a precipitate is observed, centrifuge the solution thoroughly and use only the soluble fraction (removing it from the precipitate). A 10% overfill has been added to compensate for any loss of protein in the precipitate. For prolonged storage, dilute to working aliquots in a 0.1% BSA solution, store at -80°C and avoid repeat freeze thaws.
|Alternate Names||Type II interferon, T cell interferon, Immune Interferon, MAF|
|Source||Genetically modified E.coli|
|Predicted Molecular Mass||Monomer, 16.9 kDa (144 aa)|
|AA Sequence||MQDPYVKEAE NLKKYFNAGH SDVADNGTLF LGILKNWKEE SDRKIMQSQI VSFYFKLFKN FKDDQSIQKS VETIKEDMNV KFFNSNKKKR DDFEKLTNYS VTDLNVQRKA IHELIQVMAE LSPAAKTGKR KRSQMLFQGR RASQ|
|Formulation||Lyophilized from a 0.2 µm filtered solution containing 10 mM sodium phosphate, 50 mM sodium chloride, pH 7.5|
|Product Reconstitution||Sterile water at 0.1 mg/mL|
|Country of Origin||USA|
|Specification*||Method of Determination||Acceptance Criteria|
|Purity||Reducing and Non-Reducing SDS PAGE||≥ 95%|
|Endotoxin||Kinetic LAL||≤ 0.1 EU/µg|
|Biological Activity (ED50)||Activity of HEK-Blue IFN-γ Cells||≤ 0.7 ng/mL; ≥ 1.4 x 106 units/mg|
*Lot-specific values for the above specifications are supplied with each product on its corresponding COA. The values provided here are minimum expected values to pass internal requirements.