Overview

Description

  • NatureRecombinant
  • SourceEscherichia coli
  • Amino Acid Sequence
    • SpeciesHuman
    • SequenceMQDRHMIRMR QLIDIVDQLK NYVNDLVPEF LPAPEDVETN CEWSAFSCFQ KAQLKSANTG NNERIINVSI KKLKRKPPST NAGRRQKHRL TCPSCDSYEK KPPKEFLERF KSLLQKMIHQ HLSSRTHGSE DS
    • Molecular weight15 kDa
    • Additional sequence informationIL21 Human Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 132 amino acids and having a total molecular mass of 15.4kDa.

Specifications

Our Abpromise guarantee covers the use of ab73250 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

  • Applications

    Functional Studies

    SDS-PAGE

    Other

    Western blot

  • Purity> 95 % SDS-PAGE.
    This product is purified by proprietary chromatographic techniques. Purity: Greater than 95.0% as determined by: (a) Analysis by RP-HPLC. (b) Analysis by SDS-PAGE.
  • FormLyophilised
  • Additional notesFor long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).
  • Concentration information loading...

Preparation and Storage

  • Stability and Storage

    Shipped at 4°C. Upon delivery aliquot and store at -20°C or -80°C. Avoid repeated freeze / thaw cycles.

    Preservative: None.
    Additives: None.

    This product is an active protein and may elicit a biological response in vivo, handle with caution.

  • ReconstitutionReconstitute in sterile 18MOhm/cm H2O to not less than 100µg/ml, which can then be further diluted to other aqueous solutions.

General Info

  • Alternative names
    • CVID11
    • IL 21
    • IL-21
    • Il21
    • IL21_HUMAN
    • Interleukin 21
    • Interleukin-21
    • interleukin-21 isoform
    • Interleukin21
    • OTTHUMP00000164088
    • Za11
    see all
  • FunctionCytokine with immunoregulatory activity. May promote the transition between innate and adaptive immunity. Induces the production of IgG(1) and IgG(3) in B-cells (By similarity). 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.
  • Tissue specificityExpressed in activated CD4-positive T-cells but not in CD8-positive T-cells, B-cells, or monocytes.
  • Sequence similaritiesBelongs to the IL-15/IL-21 family.
  • Cellular localizationSecreted.
  • Information by UniProt

References for Recombinant human IL21 protein (ab73250)

This product has been referenced in:
  • Audia S  et al. Splenic TFH expansion participates in B-cell differentiation and antiplatelet-antibody production during immune thrombocytopenia. Blood 124:2858-66 (2014). IF . Read more (PubMed: 25232056) »

See 1 Publication for this product

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Please note: All products are "FOR RESEARCH USE ONLY AND ARE NOT INTENDED FOR DIAGNOSTIC OR THERAPEUTIC USE"