Reactivity | HuSpecies Glossary |
Applications | Bioactivity |
Format | Carrier-Free |
Details of Functionality | 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 | Val30 |
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. |
Dilutions |
|
Theoretical MW | 26 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 | 34-45 kDa, under reducing conditions. |
Storage | Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
|
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 500 μg/mL in PBS. |
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).
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