Recombinant Human IL-21 Protein

Novus Biologicals, part of Bio-Techne | Catalog # NBP2-35057

Novus Biologicals, part of Bio-Techne
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NBP2-35057-100ug
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Key Product Details

Source

E. coli

Accession #

Q9HBE4

Conjugate

Unconjugated

Applications

Bioactivity, SDS-PAGE

View all IL-21 Proteins and Enzymes »

Product Specifications

Description

A single non-glycosylated polypeptide chain containing 133 amino acids corresponding to IL-21 Source: E. coli

Uniprot ID: Q9HBE4

Amino Acid Sequence: QGQDRHMIRM RQLIDIVDQL KNYVNDLVPE FLPAPEDVET NCEWSAFSCF QKAQLKSANT GNNERIINVS IKKLKRKPPS TNAGRRQKHR LTCPSCDSYE KKPPKEFLER FKSLLQKMIH QHLSSRTHGS EDS

Purity

> 97 % pure by SDS-PAGE and HPLC

Endotoxin Level

Less than 1 EU/ug of IL-21 as determined by LAL method.

Predicted Molecular Mass

15.4 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.

Activity

Fully biologically active when compared to standard. Measured by its ability to enhance IFN-gamma secretion in NK-92 human natural killer lymphoma cells. The ED50 for this effect is less than or equal to 2 ng/mL. The specific activity of recombinant human IL-21 > 5.0 x 10^5 U/mg.

Protein / Peptide Type

Recombinant Protein

Scientific Data Images for Recombinant Human IL-21 Protein

SDS-PAGE: Recombinant Human IL-21 Protein [NBP2-35057]

SDS-PAGE: Recombinant Human IL-21 Protein [NBP2-35057]

SDS-Page: Human IL-21 Protein [NBP2-35057]

Formulation, Preparation and Storage

NBP2-35057
Formulation Lyophilized from a 0.2 um filtered concentrated solution in PBS, pH 7.4.
Preservative No Preservative
Concentration Lyoph
Reconstitution Recommended to centrifuge prior to opening. Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0mg/mL. Apportion stock solutions into working aliquots and store at
Format Carrier-Free
Shipping The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage Store at -20 to -70C as supplied. After reconstitution, store at 2 to 8C for 1 month and at -20 to -70C for long term storage. Avoid repeated freeze-thaw cycles.

Background: IL-21

Human IL-21 is encoded by IL-21 gene located on Chr. 4. It is a pleiotropic cytokine produced by CD4+ T cells in response to antigenic stimulation and can regulating immune system cells, for instance cytotoxin T cells and natural killer cells. Additionally, it can induce target cells division or proliferation. IL-21 elicits its effect through binding to IL-21R, which also contains the gamma chain found in other cytokine receptors such as IL-2, IL-4, IL-7, IL-9 and IL-15. IL-21/IL-21R interaction triggers a cascade of events which includes activation of the tyrosine kinases JAK1 and JAK3, followed by activation of the transcription factors STAT1 and STAT3. IL-21 shows having much relation with clinical illnesses, including cancer immunotherapy, viral infections and allergies

Long Name

Interleukin 21

Alternate Names

CVID11, IL21, Za11

Gene Symbol

IL21

UniProt

Q9HBE4

Additional IL-21 Products

Product Documents for Recombinant Human IL-21 Protein

Product Datasheets

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

Product Specific Notices for Recombinant Human IL-21 Protein

This lyophilized preparation is stable at 2-8 degrees C, but should be kept at -20 degrees C for long term storage, preferably desiccated. Upon reconstitution, the preparation is most stable at -20 to -80 degrees C, and can be stored for one week at 2-8 degrees C. For maximal stability, apportion the reconstituted preparation into working aliquots and store at -20 degrees C to -80 degrees C. Avoid repeated freeze/thaw cycles.

This product is for research use only and is not approved for use in humans or in clinical diagnosis. This product is guaranteed for 1 year from date of receipt.

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