Recombinant Rhesus Macaque IFN-gamma Protein

Name: Recombinant Rhesus Macaque IFN-gamma Protein
Brand: R&D Systems
SKU: 961-RM
Price: 388 USD
Availability: InStock

R&D Systems | Catalog # 961-RM

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Citations (3)

Product Documents

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

Key Product Details

R&D Systems E. coli-derived Recombinant Rhesus Macaque IFN-gamma Protein (961-RM)
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

E. coli

Accession Number

P63310

Applications

Bioactivity

View all IFN-gamma Proteins and Enzymes »

Product Specifications

Source

E. coli-derived rhesus macaque IFN-gamma protein
Gln24-Gln165, with an N-terminal Met

Purity

>97%, by SDS-PAGE under reducing conditions and visualized by silver stain.

Endotoxin Level

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

N-terminal Sequence Analysis

Met

Predicted Molecular Mass

16.9 kDa

Activity

Measured in anti-viral assays using HeLa human cervical epithelial carcinoma cells infected with encephalomyocarditis (EMC) virus. Meager, A. (1987) in Lymphokines and Interferons, a Practical Approach. Clemens, M.J. et al. (eds): IRL Press. 129.
The ED₅₀ for this effect is 50.0-500 ng/mL.

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: 961-RM

Formulation	Lyophilized from a 0.2 μm filtered solution in Tris with BSA as a carrier protein.
Reconstitution	Reconstitute at 25 μg/mL in sterile PBS containing at least 0.1% human or bovine serum albumin.
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 to -70 °C under sterile conditions after reconstitution.

Carrier Free: 961-RM/CF

Formulation	Lyophilized from a 0.2 μm filtered solution in Tris.
Reconstitution	Reconstitute at 100 μg/mL in sterile 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 to -70 °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: IFN-gamma

Interferon-gamma (IFN-gamma ), also known as type II or immune interferon, exerts a wide range of immunoregulatory activities and is considered to be the prototype proinflammatory cytokine (1, 2). Mature rhesus IFN-gamma exists as a noncovalently linked homodimer of 20 - 25 kDa variably glycosylated subunits (3). It shares 90% amino acid sequence identity with human IFN-gamma, 57% - 66% with bovine, canine, equine, feline, and porcine IFN-gamma, and 37% - 44% with cotton rat, mouse, and rat IFN‑ gamma. IFN‑ gamma dimers bind to IFN-gamma RI (alpha subunits) which then interact with IFN-gamma RII (beta subunits) to form the functional receptor complex of two alpha and two beta subunits. Inclusion of IFN-gamma RII increases the binding affinity for ligand and the efficiency of signal transduction (4, 5). IFN‑ gamma is produced by a variety of immune cells under inflammatory conditions, notably by T cells and NK cells (6). It plays a key role in host defense by promoting the development and activation of Th1 cells, chemoattraction and activation of monocytes and macrophages, upregulation of antigen presentation molecules, and immunoglobulin class switching in B cells. It also exhibits antiviral, antiproliferative, and apoptotic effects (6, 7). In addition, IFN‑ gamma functions as an anti-inflammatory mediator by promoting the development of regulatory T cells and inhibiting Th17 cell differentiation (8, 9). The pleiotropic effects of IFN‑ gamma contribute to the development of multiple aspects of atherosclerosis (7).