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Interleukin-21 (IL21) Human Active Protein

For Research Use Only. Not for use in diagnostic procedures. Catalog #: MBS546071

IL-21 is a pleiotropic cytokine produced by CD4+ T cells in response to antigenic stimulation. Its action generally enhances antigen-specific responses of immune cells. The biological effects of IL-21 include induction of differentiation of T-cells-stimulated… More details

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Product Overview

Product Name
Interleukin-21 (Il21), Active Protein
Full Product Name
Recombinant Human Interleukin-21; human IL-21
Product Gene Name
Product Synonym Names
Interleukin-21; human IL-21; Human Interleukin-21
Host
E Coli
Form/Format
Lyophilized from a 0.2mm filtered concentrated solution in PBS, pH 7.4.
Physical Appearance: Sterile Filtered White lyophilized (freeze-dried) powder.
Purity/Purification
>97% by SDS-PAGE and HPLC analyses.
Preparation and Storage
This lyophilized preparation is stable at 2-8 degree C, but should be kept at -20 degree C for long term storage, preferably desiccated. Upon reconstitution, the preparation is stable for up to one week at 2-8 degree C. For maximal stability, apportion the reconstituted preparation into working aliquots and store at -20 degree C to -70 degree C. Avoid repeated freeze/thaw cycles
Molecular Weight
16,811 Da
Chromosome Location
Chromosome: 3; NC_000069.6 (37222759..37232618, complement). Location: 3 B; 3
3D Structure
ModBase 3D Structure for Q9ES17
Active Protein Note
Protein activity can be an ambiguous term. Please refer to the data sheet or inquire with Technical Support to determine the definition of activity for this product.
Molecular Weight Information
Approximately 15.0 KDa, a single non-glycosylated polypeptide chain containing 132 amino acids.
Biological Activity
Determined by its ability to proliferate activated B cells.
Endotoxin Level
Less than 1EU/mg of rHuIL-21 as determined by LAL method.
Reconstitution
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at <-20 degree C. Further dilutions should be made in appropriate buffered solutions.

Other Notes

Small volumes of Il21 active protein vial(s) may occasionally become entrapped in the seal of the product vial during shipment and storage. If necessary, briefly centrifuge the vial on a tabletop centrifuge to dislodge any liquid in the container`s cap. Certain products may require to ship with dry ice and additional dry ice fee may apply.

Searchable Terms for Il21 purchase

MBS546071 is an active protein targeting Il21. Also known as Recombinant Human Interleukin-21; human IL-21. Host: E Coli.

Additional Details

NCBI/Uniprot data below describe general gene information for Il21. It may not necessarily be applicable to this product.

NCBI GI #
NCBI GeneID
NCBI Accession #
UniProt Primary Accession #
UniProt Related Accession #
GenBank Nucleotide #
NCBI Official Full Name
interleukin-21
NCBI Official Synonym Full Names
interleukin 21
NCBI Official Symbol
Il21
UniProt Protein Name
Interleukin-21
Protein Family
UniProt Gene Name
Il21
UniProt Synonym Gene Names
IL-21
UniProt Entry Name
IL21_MOUSE
NCBI Protein Information
interleukin-21; IL-21

UniProt Comments for Il21

IL21: Cytokine with immunoregulatory activity. May promote the transition between innate and adaptive immunity. Induces the production of IgG(1) and IgG(3) in B-cells. May play a role in proliferation and maturation of natural killer (NK) cells in synergy with IL15. May regulate proliferation of mature B- and T-cells in response to activating stimuli. In synergy with IL15 and IL18 stimulates interferon gamma production in T-cells and NK cells. During T-cell mediated immune response may inhibit dendritic cells (DC) activation and maturation. Belongs to the IL-15/IL-21 family. 2 isoforms of the human protein are produced by alternative splicing.

Protein type: Secreted; Cell development/differentiation; Cytokine; Apoptosis; Secreted, signal peptide

Cellular Component: extracellular space; extracellular region

Molecular Function: hematopoietin/interferon-class (D200-domain) cytokine receptor binding; interleukin-2 receptor binding; cytokine activity

Biological Process: positive regulation of interleukin-17 production; positive regulation of natural killer cell cytokine production; cell maturation; B cell apoptosis; positive regulation of natural killer cell mediated cytotoxicity; positive regulation of interleukin-10 production; positive regulation of tyrosine phosphorylation of Stat3 protein; positive regulation of natural killer cell differentiation; positive regulation of tyrosine phosphorylation of Stat1 protein; positive regulation of cell proliferation; positive regulation of B cell proliferation; positive regulation of B cell differentiation; immune response; positive regulation of T cell proliferation; positive regulation of interferon-gamma biosynthetic process
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Precautions

All of MyBioSource's Products are for scientific laboratory research purposes and are not for diagnostic, therapeutics, prophylactic or in vivo use. Through your purchase, you expressly represent and warrant to MyBioSource that you will properly test and use any Products purchased from MyBioSource in accordance with industry standards. MyBioSource and its authorized distributors reserve the right to refuse to process any order where we reasonably believe that the intended use will fall outside of our acceptable guidelines.

Disclaimer

While every efforts were made to ensure the accuracy of the information provided in this datasheet, MyBioSource will not be liable for any omissions or errors contained herein. MyBioSource reserves the right to make changes to this datasheet at any time without prior notice.

It is the responsibility of the customer to report product performance issues to MyBioSource within 30 days of receipt of the product. Please visit our Terms & Conditions page for more information.

Product Note

Select online data sheet information is drawn from bioinformatics databases, occasionally resulting in ambiguous or non-relevant product information. It is the responsibility of the customer to review, verify, and evaluate the information to make sure it matches their requirements before purchasing the kit. Our ELISA Kit assays are dynamic research tools and sometimes they may be updated and improved. If the format of this assay is important to you then please request the current manual or contact our technical support team with a presales inquiry before placing an order. We will confirm the current details of the assay. We cannot guarantee the sample manual posted online is the most current manual, it is intended to serve as an example only. Please refer to the instructions For Use provided with the assay kit for precise details.

Product PubMed Publications

Organs/Tissues associated with Il21 active protein

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