Recombinant Mouse IL-12 (linked heterodimer) Protein

Name: Recombinant Mouse IL-12 (linked heterodimer) Protein
Brand: R&D Systems
SKU: 10051-ML

Catalog # 10051-ML

Product Datasheet / COA / SDS

GS Linker, Defined heterodimer stoichiometry.

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Key Product Details

Source:	NS0
Accession #:	P43432, P43431
Structure / Form:	GS-linked heterodimer
Applications:	Bioactivity

View Full Technical Details for Recombinant Mouse IL-12 (linked heterodimer) Protein

Product Specifications

Source

Mouse myeloma cell line, NS0-derived mouse IL-12 protein

Mouse IL-12 p40 (Met23-Ser335) Accession # P43432	GGGGSGGGGSGGGGS	Mouse IL-12 p35 (Arg23-Ala215) Accession # P43431
N-terminus		C-terminus

Purity

>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.

Endotoxin level

<0.10 EU per 1 μg of the protein by the LAL method.

N-terminal sequence Analysis

Met23

Predicted Molecular Mass

58 kDa

SDS-PAGE

62-82 kDa, reducing conditions

Activity

Measured in a cell proliferation assay using PHA-activated mouse splenocytes. Mattner, F. et al. (1993) Eur. J. Immunol. 23:2202. The ED₅₀ for this effect is 0.01-0.1 ng/mL.

Recombinant Mouse IL-12 (linked heterodimer) Protein Scientific Data Examples

	Recombinant Mouse IL-12 (linked heterodimer) Protein Bioactivity Recombinant Mouse IL-12 stimulates cell proliferation of PHA-activated mouse splenocytes. The ED₅₀ for this effect is 0.01-0.1 ng/mL.
	Recombinant Mouse IL-12 (linked heterodimer) Protein SDS-PAGE 2 μg/lane of Recombinant Mouse IL‑12 was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditions and visualized by Coomassie® Blue staining, showing bands at 62-82 kDa.

Formulation, Preparation and Storage

Carrier Free

What does CF mean?

CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.

10051-ML

Carrier

Formulation	Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein.
Reconstitution	Reconstitute at 100 μg/mL in PBS.
Shipping	The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage:	Use a manual defrost freezer and avoid repeated freeze-thaw cycles. 12 months from date of receipt, -20 to -70 °C as supplied. 1 month, 2 to 8 °C under sterile conditions after reconstitution. 3 months, ≤ -20 °C under sterile conditions after reconstitution.

10051-ML/CF

Carrier Free

Formulation	Lyophilized from a 0.2 μm filtered solution in PBS.
Reconstitution	Reconstitute at 100 μg/mL in PBS.
Shipping	The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage:	Use a manual defrost freezer and avoid repeated freeze-thaw cycles. 12 months from date of receipt, -20 to -70 °C as supplied. 1 month, 2 to 8 °C under sterile conditions after reconstitution. 3 months, ≤ -20 °C under sterile conditions after reconstitution.

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.

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Background: IL-12

Interleukin 12, also known as natural killer cell stimulatory factor (NKSF) or cytotoxic lymphocyte maturation factor (CLMF), is a pleiotropic cytokine originally identified in the medium of activated B lymphoblastoid cell lines (1). The p40 subunit of IL-12 has been shown to have extensive amino acid sequence homology to the extracellular domain of the IL-6 receptor while the p35 subunit shows distant but significant sequence similarity to IL-6, G-CSF, and chicken MGF (2, 3). These observations have led to the suggestion that IL-12 might have evolved from a cytokine/soluble receptor complex. Murine and human IL-12 share 70% and 60% amino acid sequence homology in their p40 and p35 subunits, respectively. IL-12 apparently shows species specificity with human IL-12 reportedly showing minimal activity in the murine system. IL-12 is produced by macrophages and B lymphocytes and has been shown to have multiple effects on T cells and natural killer (NK) cells (4). These effects include inducing production of IFN-gamma and TNF by resting and activated T and NK cells, synergizing with other IFN-gamma inducers at both the transcriptional and post-transcriptional levels. This interaction induces IFN-gamma gene expression, enhancing the cytotoxic activity of resting NK and T cells, inducing and synergizing with IL-2 in the generation of lymphokine-activated killer (LAK) cells, acting as a co-mitogen to stimulate proliferation of resting T cells, and inducing proliferation of activated T and NK cells (5). Current evidence indicates that IL‑12, produced by macrophages in response to infectious agents, is a central mediator of the cell‑mediated immune response by its actions on the development, proliferation, and activities of TH1 cells. In its role as the initiator of cell-mediated immunity, it has been suggested that IL-12 has therapeutic potential as a stimulator of cell-mediated immune responses to microbial pathogens, metastatic cancers, and viral infections such as AIDS.

Item	Value
References	Gubler, U. et al. (1991) Proc. Natl. Acad. Sci. 88:4143. Gearing, D. et al. (1991) Cell 66:9. Merberg, D. et al. (1992) Immunology Today 13:78. Wolf, S.F. et al. (1991) Journal of Immunology 146:3074. Airoldi, I. et al. (2000) Journal of Immunology 165:6880.
Long Name	Interleukin 12
Entrez Gene IDs	3592 (Human); 16159 (Mouse); 84405 (Rat); 397053 (Porcine); 403977 (Canine); 102115316 (Cynomolgus Monkey); 493741 (Feline); 703205 (Rhesus Macaque)
Alternate Names	CLMF p35, CLMF1, Cytotoxic lymphocyte maturation factor 35 kDa subunit, IL-12, IL-12 subunit p35, IL-12, subunit p35, IL12, IL12A, NF cell stimulatory factor chain 1, NK cell stimulatory factor chain 1, NKSF1, interleukin 12, p35, interleukin 12A (natural killer cell stimulatory factor 1, cytotoxic lymphocytematuration factor 1, p35), interleukin-12 alpha chain, interleukin-12 subunit alpha, natural killer cell stimulatory factor 1, 35 kD subunit, p35

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Recombinant Mouse IL-12 (linked heterodimer) Protein

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Product Specifications

Recombinant Mouse IL-12 (linked heterodimer) Protein Scientific Data Examples

Formulation, Preparation and Storage

Carrier Free

10051-ML

Carrier

10051-ML/CF

Carrier Free

Reconstitution Calculator

Background: IL-12

Citations for Recombinant Mouse IL-12 (linked heterodimer) Protein

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