Recombinant Human IL-20R alpha His-tag Protein, CF

Catalog # Availability Size / Price Qty
11239-IR-050
Recombinant Human IL-20R alpha His-tag Protein Binding Activity.
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Recombinant Human IL-20R alpha His-tag Protein, CF Summary

Product Specifications

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.
Activity
Measured by its binding ability in a functional ELISA. When Recombinant Human IL-20R alpha His-tag (Catalog # 11239-IR) is immobilized at 0.5 µg/mL (100 µL/well), Recombinant Human IL-26/AK155 Dimer (Catalog # 1870-IL) binds with an ED50 of 3.00-30.0 ng/mL.
Source
Chinese Hamster Ovary cell line, CHO-derived human IL-20R alpha protein
Val30-Lys250, with a C-terminal 6-His tag
Accession #
N-terminal Sequence
Analysis
Val30
Predicted Molecular Mass
26 kDa
SDS-PAGE
34-45 kDa, under reducing conditions.

Product Datasheets

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11239-IR

Carrier Free

What does CF mean?

CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.

What formulation is right for me?

In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.

11239-IR

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.

Scientific Data

Binding Activity View Larger

When Recombinant Human IL-20R alpha His-tag Protein (Catalog # 11239-IR) is immobilized at 0.5 µg/mL (100 µL/well), Recombinant Human IL‑26/AK155 Dimer Protein (1870-IL) binds with an ED50 of 3.00-30.0 ng/mL.

SDS-PAGE View Larger

2 μg/lane of Recombinant Human IL-20R alpha His-tag Protein (Catalog # 11239-IR) was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditions and visualized by Coomassie® Blue staining, showing bands at 34-45 kDa.

Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.

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Background: IL-20R alpha

IL-20 receptor alpha (IL-20 R alpha ), also named IL-20 R1, CRF2-8, and ZCYTOR7, belongs to the class II cytokine receptor family, which includes 12 members. These receptors are characterized by the patterns of conserved amino acid (aa) residues in their extracellular domains, which are composed of tandem fibronectin type III domains (1). Class II cytokine receptors form heterodimeric signaling receptor complexes that mediate class II cytokine signals. Subunits of the different receptor complexes are shared and serve multiple functions (1). The gene for human IL-20 R alpha is mapped to chromosome 6 and encodes a 553 aa glycoprotein with a 29 aa signal peptide, a 221 aa extracellular domain, a 24 aa transmembrane region and a 279 aa intracellular domain (2). IL-20 R alpha is widely expressed and is detected at high levels in multiple tissues including skin, testis, heart, placenta, salivary gland and prostate gland (1). The expression of IL-20 R alpha, together with that of IL-20 R beta, is upregulated in psoriatic skin lesions on keratinocytes, immune cells, and endothelial cells (1, 2). IL-20 R alpha heterodimerizes with IL-20 R beta to form the functional receptor that mediates IL-19, IL-20 and IL-24 signals (3, 4). IL-20 R alpha also heterodimerizes with IL-10 R beta to form the functional receptor complex for IL-26 (5). Binding of these IL-10 family class II cytokines to their functional receptors induces activation of the JAK-STAT signal transduction pathway. At low ligand concentrations, STAT3 has been shown to be the predominant STAT proteins activated through either complexes (3 - 5).

References
  1. Kotenko, S.V. (2003) Cytokine & Growth Factor Reviews 13:223.
  2. Xie, M.H. et al. (2000) J. Biol. Chem. 275:31335.
  3. Dumoutier, L. et al. (2001) J. Immunol. 167:3534.
  4. Parrish-Novak, J. et al. (2002) J. Biol. Chem. 277:47517s.
  5. Sheikh. F. et al. (2004) J. Immunol. 172:2006.
Long Name
Interleukin 20 Receptor alpha
Entrez Gene IDs
53832 (Human); 237313 (Mouse)
Alternate Names
class II cytokine receptor ZCYTOR7; CRF2-8; Cytokine receptor class-II member 8; Cytokine receptor family 2 member 8; FLJ40993; IL-20 R alpha; IL20R alpha; IL-20R alpha; IL-20R1; IL-20R1IL-20 receptor subunit alpha; IL20RA; IL-20Ra; IL-20R-alpha; interleukin 20 receptor, alpha; interleukin-20 receptor I; interleukin-20 receptor subunit alpha; zcytor7

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