Recombinant Rat IL-21 Protein (Gst Tag)

Specifications

Catalog number

PDER100135-01

Size / count

20 µg

Dry ice

No

Hazardous

No

Discontinued

No

Background

IL-21 belongs to the IL-15/IL-21 family. It is a cytokine with immunoregulatory activity. Cytokines are proteinaceous signaling compounds that are major mediators of the immune response. They control many different cellular functions including proliferation, differentiation, and cell survival/apoptosis but are also involved in several pathophysiological processes including viral infections and autoimmune diseases. Cytokines are synthesized under various stimuli by a variety of cells of both the innate (monocytes, macrophages, dendritic cells) and adaptive (T-and B-cells) immune systems. IL-21 is expressed in activated CD4-positive T-cells but not in CD8-positive T-cells, B-cells, or monocytes. It may promote the transition between innate and adaptive immunity. IL-21 has been tried as a therapy for alleviating allergic responses. It can significantly decrease pro-inflammatory cytokines produced by T cells in addition to decreasing IgE levels in a mouse model for rhinitis (nasal passage inflammation) .

Abbreviation

IL-21

Synonyms

Za11; Il21

UniProt

A3QPB9

Accession Number

A3QPB9

Expression System

E.coli

Tag

N-Gst

Sequence

His18-Ser146

Endotoxin

< 10 EU/mg of the protein as determined by the LAL method.

Purity

> 90% as determined by reducing SDS-PAGE.

Bioactivity

Not validated for activity

Reconstitution

It is recommended that sterile water be added to the vial to prepare a stock solution of 0.5 mg/mL. Concentration is measured by UV-Vis.

Shipping Conditions

This product is provided as lyophilized powder which is shipped with ice packs.

Storage Conditions

Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80°C. Reconstituted protein solution can be stored at 4-8°C for 2-7 days. Aliquots of reconstituted samples are stable at < -20°C for 3 months.

Calculated Molecular Weight

40.1 kDa

Observed Molecular Weight

45 kDa

Formulation

Lyophilized from a 0.2 μm filtered solution in PBS with 5% Trehalose and 5% Mannitol.

Species

Rat