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Your Position: Home > Protein > IL23A & IL12B > ILB-H82W6

Biotinylated Human IL-23 alpha&IL-12 beta Heterodimer Protein, His,Avitag™&Tag Free (MALS verified)

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Based on the high binding affinity between biotin-streptavidin systems, our Streptavidin series products are recommended to use together with biotinylated proteins to get lower non-specific binding results in a shorter time.

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  • Synonym
    IL-23 alpha & IL-12 beta
  • Source
    Biotinylated Human IL-23 alpha&IL-12 beta Heterodimer Protein, His,Avitag&Tag Free(ILB-H82W6) is expressed from human 293 cells (HEK293). It contains AA Arg 20 - Pro 189 (IL23A) & Ile 23 - Ser 328 (IL12B) (Accession # Q9NPF7-1 (IL23A) & P29460-1 (IL12B)).
    Predicted N-terminus: His (IL23A) & Ile 23 (IL12B)
  • Molecular Characterization
    IL23A & IL12B Structure

    Biotinylated Human IL-23A&IL-12B Heterodimer Protein, His,Avitag&Tag Free, produced by co-expression of IL23A and IL12B, has a calculated MW of 21.9 kDa (IL23A) & 34.7 kDa (IL12B). Subunit IL23A is fused with an Avi tag (Avitag™), followed by a polyhistidine tag at the N-terminus and subunit IL12B contains no tag. The predicted N-terminus is His (IL23A) & Ile 23 (IL12B). The reducing (R) protein migrates as 26 kDa (IL23A) & 40-45 kDa (IL12B) respectively due to glycosylation.

  • Labeling
    Biotinylation of this product is performed using Avitag™ technology. Briefly, the single lysine residue in the Avitag is enzymatically labeled with biotin.
  • Protein Ratio
    Passed as determined by the HABA assay / binding ELISA.
  • Endotoxin
    Less than 1.0 EU per μg by the LAL method.
  • Purity

    >95% as determined by SDS-PAGE.

  • Formulation

    Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 with trehalose as protectant.

    Contact us for customized product form or formulation.

  • Reconstitution

    Please see Certificate of Analysis for specific instructions.

    For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.

  • Storage

    For long term storage, the product should be stored at lyophilized state at -20°C or lower.

    Please avoid repeated freeze-thaw cycles.

    This product is stable after storage at:

    1. -20°C to -70°C for 12 months in lyophilized state;
    2. -70°C for 3 months under sterile conditions after reconstitution.
SDS-PAGE
IL23A & IL12B SDS-PAGE

Biotinylated Human IL-23 alpha&IL-12 beta Heterodimer Protein, His,Avitag&Tag Free on SDS-PAGE under reducing (R) condition. The gel was stained with Coomassie Blue. The purity of the protein is greater than 95%.

SEC-MALS
IL23A & IL12B MALS images

The purity of Biotinylated Human IL-23 alpha&IL-12 beta Heterodimer Protein, His,Avitag&Tag Free (Cat. No. ILB-H82W6) is more than 85% and the molecular weight of this protein is around 55-70 kDa verified by SEC-MALS.

Bioactivity-ELISA
 IL23A & IL12B ELISA

Immobilized Anti-p19 subunit of IL23 (Anti-IL23A) MAb, Human IgG1 at 2 μg/mL (100 μL/well) can bind Biotinylated Human IL-23A&IL-12B Heterodimer Protein, His,Avitag&Tag Free (Cat. No. ILB-H82W6) with a linear range of 1.2-19.5 ng/mL (QC tested).

 IL23A & IL12B ELISA

Immobilized Biotinylated Human IL-23A&IL-12B Heterodimer Protein, His,Avitag&Tag Free (Cat. No. ILB-H82W6) at 2 μg/mL (100 μL/well) on streptavidin precoated (0.2 μg/well) plate, can bind Human IL-23 R, Fc Tag (Cat. No. ILR-H5254) with a linear range of 0.4-6 ng/mL (Routinely tested).

Bioactivity-SPR
 IL23A & IL12B SPR

Captured Biotinylated Human IL-23A&IL-12B Heterodimer Protein, His,Avitag&Tag Free (Cat. No. ILB-H82W6) on Biotin CAP - Series S sensor Chip can bind Human IL-23 R, His Tag (Cat. No. ILR-H52H4) affinity constant of 4.77 nM as determined in a SPR assay (Biacore T200) (Routinely tested).

Bioactivity-BLI
 IL23A & IL12B BLI

Loaded Biotinylated Human IL-23A&IL-12B Heterodimer Protein, His,Avitag&Tag Free (Cat. No. ILB-H82W6) on SA Biosensor, can bind Human IL-23 R, His Tag (Cat. No. ILR-H52H4) with an affinity constant of 33.2 nM as determined in BLI assay (ForteBio Octet Red96e) (Routinely tested).

Bioactivity-Bioactivity CELL BASE
 IL23A & IL12B CELL

Biotinylated Human IL-23A&IL-12B Heterodimer Protein, His,Avitag&Tag Free (Cat. No. ILB-H82W6) stimulates secretion of IL-17 by mousespleen cells. The ED50 for this effect is 0.191-0.2173 ng/mL (Routinely tested).

 IL23A & IL12B CELL

Cell based assay shows that the secretion of IL-17 induced by Biotinylated Human IL-23A&IL-12B Heterodimer Protein, His,Avitag&Tag Free (Cat. No. ILB-H82W6) is inhibited by increasing concentration of the anti-human IL-23 neutralizing antibody. The IC50 is between 0.25-1.40 ng/mL (Routinely tested).

  • Background
    Interleukin-23 subunit alpha (IL-23 alpha) can associates with IL12B to form the IL-23 interleukin, a heterodimeric cytokine which functions in innate and adaptive immunity. IL-23 may constitute with IL-17 an acute response to infection in peripheral tissues. IL-23 binds to a heterodimeric receptor complex composed of IL12RB1 and IL23R, activates the Jak-Stat signaling cascade, stimulates memory rather than naive T-cells and promotes production of proinflammatory cytokines. IL-23 induces autoimmune inflammation and thus may be responsible for autoimmune inflammatory diseases and may be important for tumorigenesis.
  • Clinical and Translational Updates

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  • Latest Research Phase:Approved

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