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Recombinant Human IL-27 Ra/WSX-1/TCCR His-tag Protein, CF

Bio-Techne includes R&D Systems | Catalog # 11270-TC

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11270-TC-050

Key Product Details

Source

CHO

Accession #

Conjugate

Unconjugated

Applications

Bioactivity

Product Specifications

Source

Chinese Hamster Ovary cell line, CHO-derived human IL-27 R alpha/WSX-1/TCCR protein
Thr30-Lys516, with a C-terminal 6-His tag

Purity

>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.

Endotoxin Level

<0.10 EU per 1 μg of the protein by the LAL method.

N-terminal Sequence Analysis

Thr30

Predicted Molecular Mass

54 kDa

SDS-PAGE

76-88 kDa, under reducing conditions.

Activity

Measured by its ability to inhibit IL-27 anti-viral activity using HepG2 human hepatocellular carcinoma cells infected with encephalomyocarditis (EMC) virus. Bender H. et al. (2009) Hepatology 50:585.
The ED50 for this effect is 0.160-2.40 µg/mL.

Scientific Data Images for Recombinant Human IL-27 Ra/WSX-1/TCCR His-tag Protein, CF

Recombinant Human IL-27 Ra/WSX-1/TCCR His-tag Protein SDS-PAGE.

2 μg/lane of Recombinant Human IL-27 Ra/WSX-1/TCCR His-tag Protein (Catalog # 11270-TC) was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditions and visualized by Coomassie® Blue staining, showing bands at 76-88 kDa.

Recombinant Human IL-27 Ra/WSX-1/TCCR His-tag Protein Bioactivity.

Recombinant Human IL‑27 R alpha/WSX‑1/TCCR His-tag Protein (Catalog # 11270-TC) inhibits IL-27 anti-viral activity in HepG2 human hepatocellular carcinoma cells infected with encephalomyocarditis (EMC) virus. The ED50 for this effect is 0.160-2.40 µg/mL.

Formulation, Preparation and Storage

11270-TC
Formulation Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose.
Reconstitution Reconstitute at 500 μg/mL in PBS.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & 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.

Background: IL-27 R alpha/WSX-1/TCCR

IL‑27 R alpha (also known as WSX‑1 and TCCR) is a 96 ‑ 100 kDa member of the type I, group 2 cytokine receptor family (1, 2, 3, 4, 5, 6). Mature IL‑27 R alpha is a type I transmembrane glycoprotein that contains a 484 amino acid (aa) extracellular region, a 21 aa transmembrane segment and a 99 aa cytoplasmic domain. Consistent with type I cytokine receptors, the extracellular region contains four positionally conserved cysteine residues, a WSxWS motif (for receptor folding and ligand binding), and three fibronectin type III repeats. The intracellular domain contains a "box‑1" motif that may be involved with Janus kinases (3). One potential alternate splice form has been hypothesized that involves a 58 aa addition to the cytoplasmic domain and, based on mouse, a soluble 33 kDa splice form that shows a 20 aa substitution for aa 257 ‑ 636 may also occur in human (3, 7). The human IL‑27 R alpha extracellular region shares 63% amino acid identity with the mouse IL‑27 R alpha extracellular domain (2, 3). IL‑27 R alpha is expressed in mast cells, endothelial cells, NK cells, macrophages, monocytes, B cells, dendritic cells, and naïve T cells (1, 2, 4, 8). Typical of other class I cytokine receptor chains, the ligand binding IL‑27 R alpha molecule is known to heterodimerize with a signal‑transducing subunit (gp130) to form a functional IL‑27 receptor (9, 10). In addition, IL‑27 R alpha is reported to complex with CNTFR alpha and gp130 form a humanin receptor on neurons (7, 11), and to complex with gp130 and IL‑6 R to form a receptor for a p28:CLF heterodimeric cytokine on lymphocytes (12). Studies using IL‑27 R alpha/WSX‑1‑/‑ mice reveal that IL‑27 has the ability to suppress T cell activity during infection, and to mediate an inhibition of both type 1 and type 2 T cell immunity (4, 13, 14). In particular, IL‑27 is known to act on naïve T cells, blocking their differentiation into a Th17 phenotype. Notably, cells committed to a Th17 phenotype, although they express a functional IL‑27 receptor, are unresponsive to the effects of IL‑27 (15). Activated T cells that are CD4+ and CD8+, and which express the IL‑27 receptor, can be induced by IL‑27 to form a double‑positive CD25+ FoxP3 IFN‑ gamma plus IL‑10 secreting phenotype that both promotes and suppresses the inflammatory response (16).

References

  1. Villarino, A.V. et al. (2004) J. Immunol. 173:715.
  2. Chen, Q. et al. (2000) Nature 407:916.
  3. Sprecher, C.A. et al. (1998) Biochem. Biophys. Res. Commun. 246:82.
  4. Artis, D. et al. (2004) J. Immunol. 173:5626.
  5. Yoshida, H. & Y. Miyazaki (2008) Int. J. Biochem. Cell Biol. 40:2379.
  6. Yoshida, H. & M. Yoshiyuki (2008) Immunol. Rev. 226:234.
  7. Hashimoto, Y. et al. (2009) Biochem. Biophys. Res. Commun. 389:95.
  8. Holscher, C. et al. (2005) J. Immunol. 174:3534.
  9. Pflanz, S. et al. (2004) J. Immunol. 172:2225.
  10. Scheller, J. et al. (2005) Biochem. Biophys. Res. Commun. 326:724.
  11. Hashimoto, Y. et al. (2009) Mol. Biol. Cell 20:2864.
  12. Crabe, S. et al. (2009) J. Immunol. 183:7692.
  13. Villarino, A. et al. (2003) J. Immunol. 170:645.
  14. Hamano., S. et al. (2003) Immunity 19:657.
  15. El-behi, M. et al. (2009) J. Immunol. 183:4957.
  16. Fitzgerald, D.C. et al. (2007) Nat. Immunol. 8:1372.

Long Name

Interleukin-27 Receptor Subunit alpha

Alternate Names

IL-27 R alpha, IL-27Ra, IL27R alpha, IL27RA, TCCR, WSX-1

Entrez Gene IDs

9466 (Human); 50931 (Mouse)

Gene Symbol

IL27RA

UniProt

Additional IL-27 R alpha/WSX-1/TCCR Products

Product Documents for Recombinant Human IL-27 Ra/WSX-1/TCCR His-tag Protein, CF

Certificate of Analysis

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Note: Certificate of Analysis not available for kit components.

Product Specific Notices for Recombinant Human IL-27 Ra/WSX-1/TCCR His-tag Protein, CF

For research use only

Reconstitution Calculator

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