Mouse IL-12B&IL-12A Heterodimer Protein, Tag Free&His Tag (MALS verified)

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IL2-M52W3-50ug
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Synonyms

IL12, p70, Interleukin-12

Source

Mouse IL-12B&IL-12A Heterodimer Protein, Tag Free&His Tag (IL2-M52W3) is expressed from human 293 cells (HEK293). It contains AA Met 23 - Ser 335 (IL-12B) & Arg 23 - Ala 215 (IL-12A) (Accession # P43432 (IL-12B) & P43431 (IL-12A)).

Predicted N-terminus: Arg 23 & Met 23

Molecular Characterization

Mouse IL-12B&IL-12A Heterodimer Protein, Tag Free&His Tag, produced by co-expression of IL-12B and IL-12A, has a calculated MW of 35.8 kDa (IL-12B) and 23.6 kDa (IL-12A). Subunit IL-12B is no tag and subunit IL-12A contains a polyhistidine tag at the C-terminus. The protein migrates as 28-30 kDa, 42-43 kDa and 45-46 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under reducing (R) condition (SDS-PAGE) due to glycosylation.

The protein is designed as a heterodimer.

Endotoxin

Less than 1.0 EU per μg by the LAL method / rFC method.

Purity

>90% as determined by SDS-PAGE.

>90% as determined by SEC-MALS.

Formulation

Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 with trehalose as protectant.

Contact us for customized product form or formulation.

Reconstitution

Please see Certificate of Analysis for specific instructions.

For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.

Shipping and Storage

This product is shipped at ambient temperature.

For long term storage, the product should be stored at lyophilized state at -20°C or lower.

Please avoid repeated freeze-thaw cycles.

This product is stable after storage at:
  • -20°C to -70°C for 12 months in lyophilized state;
  • -70°C for 3 months under sterile conditions after reconstitution.

Background

Interleukin 12 (IL12) is also known as p70, and is an interleukin that is naturally produced by dendritic cells, macrophages and human B-lymphoblastoid cells (NC-37) in response to antigenic stimulation.IL12 is a heterodimeric cytokine, containing IL-12A (p35) and IL-12B (p40). IL-12 is involved in the differentiation of naive T cells into Th1 cells. It is known as a T cell-stimulating factor, which can stimulate the growth and function of T cells. It stimulates the production of IFN-γ and TNF-α from T cells and NK cells, and reduces IL-4 mediated suppression of IFN-γ. IL-12 plays an important role in the activities of natural killer cells and T lymphocytes. IL-12 also has anti-angiogenic activity, which means it can block the formation of new blood vessels.