Recombinant Human IL-23R Fc Chimera Avi-tag Protein, CF

When Recombinant Human IL-23 Protein (1290-IL) is immobilized at 1.0 µg/mL (100 µL/well), the concentration of Biotinylated Recombinant Human IL-23R Fc Chimera Avi-tag Protein (Catalog # AVI1400) that produces 50% of the optimal binding response is 10.0-100 ng/mL.

2 μg/lane of Biotinylated Recombinant Human IL-23R Fc Chimera Avi-tag Protein (Catalog # AVI1400) was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditions and visualized by Coomassie® Blue staining, showing bands at 90-102 kDa and 180-200 kDa, respectively.

• Reactivity: Hu
• Applications: Bioactivity
• Format: Carrier-Free

Recombinant Human IL-23R Fc Chimera Avi-tag Protein, CF Summary

• Additional Information: Biotinylated
• Details of Functionality: Measured by its binding ability in a functional ELISA. When Recombinant Human IL-23 Protein (Catalog # 1290-IL) is immobilized at 1.0 µg/mL (100 µL/well), the concentration of Biotinylated Recombinant Human IL-23R Fc Chimera Avi-tag (Catalog # AVI1400) that produces 50% of the optimal binding response is 10.0-100 ng/mL.
• Source: Human embryonic kidney cell, HEK293-derived human IL-23R protein
  

  Human IL-23R (Gly24-Asp353) Accession # AAM44229.1	IEGRMD	Human IgG1 (Pro100-Lys330)	Avi-tag
  N-terminus			C-terminus

• N-terminal Sequence: Gly24
• Structure / Form: Disulfide-linked homodimer
  Biotinylated via Avi-tag
• Protein/Peptide Type: Recombinant Proteins
• Purity: >95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
• Endotoxin Note: <0.10 EU per 1 μg of the protein by the LAL method.

Applications/Dilutions

• Dilutions:
  • Bioactivity
• Theoretical MW: 66 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.
• SDS-PAGE: 90-102 kDa, under reducing conditions.

Packaging, Storage & Formulations

• Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.
• Buffer: Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose.
• Purity: >95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
• Reconstitution Instructions: Reconstitute at 250 μg/mL in PBS.

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for Recombinant Human IL-23R Fc Chimera Avi-tag Protein, CF

• IBD17
• IL-23 R
• IL-23 receptor
• IL23R
• IL-23R
• interleukin 23 receptor
• interleukin-23 receptor

Background

Interleukin 23 (IL-23) is a heterodimeric cytokine composed of two disulfide-linked subunits, a p19 subunit that is unique to IL-23, and a p40 subunit that is shared with IL-12 (1 - 5). The functional IL-23 receptor complex consists of two receptor subunits, the IL-12 receptor beta 1 subunit (IL-12 R beta 1) and the IL-23-specific receptor subunit (IL-23 R) (3). Human IL-23 R cDNA encodes a 629 aa type I transmembrane protein with a 23 aa residue signal peptide, a 330 aa residue extracellular domain, a 23 aa residue transmembrane domain and a 253 aa residue cytoplasmic region. IL-23 R shares structural features with the IL-12 R beta 2, including an N-terminal Ig-like domain, two cytokine receptor domains and multiple glycosylation sites in the extracellular domain. IL-23 R lacks the three extracellular membrane-proximal fibronectin-type III domains present on IL-12 R beta 2. IL-23 R has a WQPWS sequence in the transmembrane-proximal cytokine receptor domain similar to the cytokine receptor signature WSXWS motif. The cytoplasmic region of IL-23 R has three potential Src homology 2 domain-binding sites and two potential Stat-binding sites. The gene for human IL-23 R is located on human chromosome 1 within 150 kb of IL-12 R beta 2. Human and mouse IL-23 R share 66% amino acid sequence identity. Based on quantitative real-time PCR, human IL-23 R mRNA is expressed in a human Th1 and Th0 clone as well as several NK cell lines and clones. Low but detectable levels of IL-23 R mRNA is also expressed in EBV-transformed B cells and activated PBMC. IL-23 initiates a signal transduction cascade similar to that of IL-12, and involves Jak2, Tyk2, Stat1, Stat3, Stat4, and Stat5. IL-23 has biological activities that are similar to, but distinct from IL-12. Our Avi-tag Biotinylated human IL-23R Fc chimera features biotinylation at a single site contained within the Avi-tag, a unique 15 amino acid peptide. Protein orientation will be uniform when bound to streptavidin-coated surface due to the precise control of biotinylation and the rest of the protein is unchanged so there is no interference in the protein's bioactivity.

1. Oppmann, B. et al. (2000) Immunity 13:715.
2. Lankford, C.S. and D.M. Frucht (2003) J. Leukoc. Biol. 73:49.
3. Parham, C. et al. (2002) J. Immunol. 168:5448.
4. Belladonna, M.L. et al. (2002) J. Immunol. 168:5448.
5. Aggarwal, S. et al. (2003) J. Biol. Chem. 278:1910.