Recombinant Mouse IL-12 (linked heterodimer) Protein

Name: Recombinant Mouse IL-12 (linked heterodimer) Protein
Brand: R&D Systems
SKU: 10051-ML
Price: 295 USD
Availability: InStock

R&D Systems | Catalog # 10051-ML

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Citations (1)

Product Documents

GS Linker, Defined heterodimer stoichiometry.

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Product Specifications
Scientific Data
Preparation & Storage
Calculators
Background
Product Documents
Specific Notices
Research Areas

Key Product Details

R&D Systems NS0-derived Recombinant Mouse IL-12 (linked heterodimer) Protein (10051-ML)
Quality control testing to verify active proteins with lot specific assays by in-house scientists
All R&D Systems proteins are covered with a 100% guarantee

Source

NS0

Accession Number

P43432, P43431

Structure / Form

GS-linked heterodimer

Applications

Bioactivity

View all IL-12 Proteins and Enzymes »

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.

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

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.

What formulation is right for me?

In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.

Carrier: 10051-ML

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.

Carrier Free: 10051-ML/CF

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.

Calculators

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.

Volume (to add to vial)

Mass (in vial)

Desired Reconstitution Concentration

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.