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Merck

I17001

Sigma-Aldrich

Interferon-γ human

IFN-gamma, recombinant, expressed in HEK 293 cells, suitable for cell culture, endotoxin tested

Sinónimos:

IFN-γ

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About This Item

MDL number:
UNSPSC Code:
12352202
NACRES:
NA.77

recombinant

expressed in HEK 293 cells

Quality Level

assay

≥98% (SDS-PAGE)

form

lyophilized powder

potency

≤0.250 ng/mL In Viral Resistance Assay ED50

mol wt

16 kDa (glycosylated)

technique(s)

cell culture | mammalian: suitable

suitability

endotoxin tested

storage temp.

−20°C

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General description

Interferon-γ (IFN-γ) is a pleotropic cytokine, encoded by the gene mapped to human chromosome 12q15. It is a non-covalent homodimer with two identical 17kDa polypeptide chains. It belongs to the type II class of interferons.
Recombinant human Interferon-γ (IFN-γ) is expressed in human 293 cells as a glycoprotein with a calculated molecular mass of 16 kDa. This protein is manufactured in human cells using an all-human production system, with full chemically defined ingredients and with no serum. The human cells expression system allows human-like glycosylation and folding, and often supports better stability of the protein in culture. The bioactivity of IFN-γ expressed in human 293 cells is significantly higher compared to bacterially expressed IFN-γ.

Application

Interferon-γ human has been used in cytometric bead array to measure the levels of interferon-γ in the sample.
It has also been used for cytokine treatment of human islets to evaluate the activation of hypoxia inducible factor 1 α (HIF1α) targets, in vitro.

Biochem/physiol Actions

IFN-γ is a dimerized soluble cytokine that is the only member of the type II class of interferons.
Interferon-γ (IFN-γ) plays an essential role in function of virtually all immune cells and both innate and adaptive immune responses. IFN-γ exhibits various biological effects, such as antiviral activity, inhibition of cell or tumor growth and promotion of terminal differentiation of B cells into immunoglobulin-producing cells. This cytokine also activates macrophages, increases cytotoxicity of natural killer cells and promotes T cell cytotoxicity. In addition to antiviral activity, recombinant human IFN-γ is a potent modulator of immune responses and modifies cellular processes.

Sequence

QDPYVKEAENLKKYFNAGHSDVADNGTLFLGILKNWKEESDRKIMQSQIVSFYFKLFKNFKDDQSIQKSVETIKEDMNVKFFNSNKKKRDDFEKLTNYSVTDLNVQRKAIHELIQVMAELSPAAKTGKRKRSQMLFRG

Physical form

Supplied as a lyophilized powder containing phosphate buffered saline.

Analysis Note

The biological activity of recombinant human IFN-γ was tested in culture in a viral resistance assay. The ED50 is defined as the effective concentration of IFN-γ that allows 50% cell growth in an antiviral cell based bioassay.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable


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Expression and reconstitution of a biologically active mouse interferon gamma receptor in hamster cells. Chromosomal location of an accessory factor.
Hibino Y, et al.
The Journal of Biological Chemistry, 266(11), 6948-6951 (1991)
The IFNγ receptor: a paradigm for cytokine receptor signaling.
Bach E A, et al.
Annual Review of Immunology, 15(1), 563-591 (1997)
Class II cytokine receptors and their ligands: key antiviral and inflammatory modulators.
Renauld J C.
Nature Reviews: Immunology, 3(8), 667-667 (2003)
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