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Mouse IL-12 p70, Recombinant Protein, eBioscience™

Recombinant Protein

Manufacturer:  Life Technologies LS14812162

 View more versions of this product

Catalog No. 501129086



Description

Description

Interleukin-12 (IL-12) is a heterodimeric 70 kD (p70) cytokine composed of two covalently linked, glycosylated chains, 40kD (p40) and 35-kD (p35). IL-12 is mainly produced by monocytes, macrophages, and dendritic cells in response to bacterial products such as lipopolysaccharides (LPS), to intracellular pathogens or upon interaction with activated T cells. IL-12 was originally discovered because of its ability to induce interferon-gamma (IFN-g) production, cell proliferation, and cytotoxicity mediated by natural killer cells and T cells. It is now established that IL-12 also plays a key role in the development of Th1 responses, leading to IFN-g and IL-2 production. These cytokines can in turn promote T-cell responses and macrophage activation. eBioscience's recombinant mouse IL-12 p70 is produced in baculovirus-infected insect cells as an authentic heterodimer of precursor p35 and p40 subunits using a dual promoter expression system. It is distinct from other available forms of the protein in that it is expressed as a true heterodimer, as opposed to a single-chain, pseudo-heterodimer in which the subunits are joined by an artificial linker. Description: Interleukin-12 (IL-12) is a heterodimeric 70 kD (p70) cytokine composed of two covalently linked, glycosylated chains, 40kD (p40) and 35-kD (p35). IL-12 is mainly produced by monocytes, macrophages, and dendritic cells in response to bacterial products such as lipopolysaccharides (LPS), to intracellular pathogens or upon interaction with activated T cells. IL-12 was originally discovered because of its ability to induce interferon-gamma (IFN-g) production, cell proliferation, and cytotoxicity mediated by natural killer cells and T cells. It is now established that IL-12 also plays a key role in the development of Th1 responses, leading to IFN-g and IL-2 production. These cytokines can in turn promote T-cell responses and macrophage activation. eBioscience's recombinant mouse IL-12 p70 is produced in baculovirus-infected insect cells as an authentic heterodimer of precursor p35 and p40 subunits using a dual promoter expression system. It is distinct from other available forms of the protein in that it is expressed as a true heterodimer, as opposed to a single-chain, pseudo-heterodimer in which the subunits are joined by an artificial linker. Applications Reported: Recombinant mouse IL-12 is biologically active and can be used as a standard for p40 or p70 ELISA. Applications Tested: The ED50 of this protein, as measured by IFN gamma induction assay in mouse splenocytes, is less than or equal to 175 pg/mL. This corresponds to a specific activity of greater than or equal to 5.7 x 10e6 Units/mg. Source: Insect cells infected with baculovirus: mouse p40, amino acids met 1-Ser 335, accession # NM_008352 was co-expressed with mouse p35, amino acids met 1-Ala 215, accession # NM_008351. Bioactivity: The ED50 of this protein, as measured by IFN gamma induction assay in mouse splenocytes, is less than or equal to 175 pg/mL. This corresponds to a specific activity of greater than or equal to 5.7 x 10e6 Units/mg. Endotoxin: Less than 0.01ng/ug cytokine as determined by the LAL assay. Purity: >98% as determined by SDS-PAGE. Molecular Weight: The heterodimeric, p40, amino acids met 23-ser 335, cystine linked to p35, amino acids arg 23-ala 215, has a predicted molecular mass of 57,496. On non-reducing SDS-PAGE the heterodimeric cystine-linked protein migrates as a 65kDa protein. The DTT reduced protein migrates as 43kDa and 24kDa polypeptides. Storage and handling: For best recovery, quick-spin vial prior to opening. Use in a sterile environment. Purity: Greater than 90%, as determined by SDS-PAGE. Aggregation: Less than 10%, as determined by HPLC. Filtration: 0.2μm post-manufacturing filtered.
Specifications

Specifications

P43431, P43432
Cytokine Bioassays, ELISA Recombinant Standard
PBS with 1% BSA and no preservative; pH 6.0
The heterodimeric, p40, amino acids met 23-ser 335, cystine linked to p35, amino acids arg 23-ala 215, has a predicted molecular mass of 57,496. On non-reducing SDS-PAGE the heterodimeric cystine-linked protein migrates as a 65kDa protein. The DTT reduced protein migrates as 43kDa and 24kDa polypeptides.
6.0
Affinity chromatography
Insect cells infected with baculovirus
RUO
Recombinant
Mouse IL-12 p70
Control, ELISA, Functional Assay
Mouse
Ms
Recombinant
0.1mg/mL
Liquid
16159, 16160
Mouse IL-12 p70
SDS-PAGE
5μg
-80°C
Insect cells infected with baculovirus: mouse p40, amino acids met 1-ser 335, accession # NM_008352 was co-expressed with mouse p35, amino acids met 1-ala 215, accession # NM_008351
Less than 0.01ng/μg cytokine, as determined by the LAL assay.
Il12a, Il12b
The ED50 of this protein, as measured by IFN gamma induction assay in mouse splenocytes, is less than or equal to 175pg/mL. This corresponds to a specific activity of greater than or equal to 5.7 x 106 Units/mg.
Unlabeled
Insect cells
Documents

For Research Use Only.