IFN-gamma Protein, Rat (HEK293, Fc)

IFN-gamma (interferon-gamma) is a type II interferon produced by T cells and NK cells, which can significantly activate antibacterial, antiviral and antitumor responses. It acts through the JAK-STAT pathway and its receptor IFNGR1 to affect gene regulation. IFN-gamma Protein, Rat (HEK293, Fc) is the recombinant rat-derived IFN-gamma protein, expressed by HEK293 , with C-hFc labeled tag. The total length of IFN-gamma Protein, Rat (HEK293, Fc) is 156 a.a., with molecular weight of ~52 kDa.

IFN-gamma (Interferon-gamma), a type II interferon produced by immune cells like T-cells and NK cells, assumes crucial roles in antimicrobial, antiviral, and antitumor responses by activating effector immune cells and enhancing antigen presentation. Its primary signaling occurs through the JAK-STAT pathway upon interaction with its receptor, IFNGR1, influencing gene regulation. Upon IFN-gamma binding, the IFNGR1 intracellular domain opens out, facilitating the association of downstream signaling components, including JAK2, JAK1, and STAT1, leading to STAT1 activation, nuclear translocation, and transcription of IFNG-regulated genes. Many of the induced genes are transcription factors, such as IRF1, capable of further driving the regulation of a subsequent wave of transcription. IFN-gamma also plays a role in the class I antigen presentation pathway by inducing the replacement of catalytic proteasome subunits with immunoproteasome subunits, thereby increasing the quantity, quality, and repertoire of peptides for class I MHC loading. It enhances the efficiency of peptide generation by inducing the expression of the activator PA28, which associates with the proteasome and alters its proteolytic cleavage preference. Additionally, IFN-gamma up-regulates MHC II complexes on the cell surface by promoting the expression of key molecules such as cathepsins B/CTSB, H/CTSH, and L/CTSL. Beyond its immune functions, IFN-gamma participates in the regulation of hematopoietic stem cells during development and under homeostatic conditions, influencing their development, quiescence, and differentiation. Existing as a homodimer, IFN-gamma interacts with IFNGR1 via its extracellular domain, a crucial interaction that promotes IFNGR1 dimerization to orchestrate its diverse and critical functions in immune responses and hematopoiesis.

Rat

HEK293

C-hFc

P01581 (Q23-C156)

25712  [NCBI]

Approximately 52 kDa

Greater than 90% as determined by reducing SDS-PAGE

<1 EU/μg, determined by LAL method.