Name :
Recombinant Canine IL1R2 Protein (hFc Tag)
Biological Activity :
Background :
Interleukin 1 receptor, type II (IL1R2) also known as CD121b (Cluster of Differentiation 121b) is a cytokine receptor that belongs to the interleukin-1 receptor family. This protein binds interleukin alpha (IL1A), interleukin beta (IL1B), and interleukin 1 receptor, type I (IL1R1/IL1RA), and acts as a decoy receptor that inhibits the activity of its ligands. The pleiotropic cytokine IL1 is produced to regulate the development and maintenance of the inflammatory responses and binds to specific plasma membrane receptors on cells. Two distinct types of IL1 receptors that can bind IL1 specifically have been identified, designated as IL1RI (IL1RA) and IL1RII (IL1RB). IL1R1 contributes to IL-1 signaling, whereas the IL-1R2/CD121b has no signaling property and acts as a decoy for IL-1. IL-1R2/CD121b structurally consisting of a ligand-binding portion comprised of three Ig-like domains, a single transmembrane region, and a short cytoplasmic domain is expressed in a variety of cell types including B lymphocytes, neutrophils, monocytes, large granular leukocytes, and endothelial cells. Interleukin 4 (IL4) is reported to antagonize the activity of interleukin 1 by inducing the expression and release of this cytokine.
Biological Activity :
Measured by its binding ability in a functional ELISA.Immobilized Canine IL1R2-Fc3 at 10 μg/ml (100 μl/well) can bind biotinylated human IL1B-His (Cat:10139-H07E), The EC50 of biotinylated human IL1B-His (Cat:10139-H07E) is 0.08-0.2 μg/ml.
Expression Host :
Canine
Source :
HEK293 Cells
Tag :
Protein Accession No. :
E2RKW1
NCBI Gene ID :
Synonyms :
Synonyms :
interleukin 1 receptor, type II
Amino Acid Sequence :
Molecular Weight :
The recombinant canine IL1R2/Fc is a disulfide-linked homodimer. The reduced monomer comprises 571 amino acids and has a predicted molecular mass of 64.8 kDa. The apparent molecular mass of the protein is approximately 65-70 kDa in SDS-PAGE under reducing conditions.
Purity :
> 90 % as determined by SDS-PAGE
State of Matter :
Product Concentration :
Storage and Stability :
Samples are stable for up to twelve months from date of receipt at -20℃ to -80℃. Store it under sterile conditions at -20℃ to -80℃. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.
Endotoxin Level :
< 1.0 EU per μg of the protein as determined by the LAL method
Protein Construction :
A DNA sequence encoding the canine IL1R2 (E2RKW1) (Met1-Glu343) was expressed with the Fc region of human IgG1 at the C-terminus.
Buffer Solution :
Lyophilized from sterile PBS, pH 7.4.Please contact us for any concerns or special requirements. Normally 5 % – 8 % trehalose, mannitol and 0.01% Tween80 are added as protectants before lyophilization. Please refer to the specific buffer information in the hardcopy of datasheet.
Shipping :
In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature.Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise.
Redissolution :
A hardcopy of datasheet with reconstitution instructions is sent along with the products. Please refer to it for detailed information.
Synonyms :
References & Citations :
Cannon JG, et al. (1997) Interleukin-1 beta, interleukin-1 receptor antagonist, and soluble interleukin-1 receptor type II secretion in chronic fatigue syndrome. J Clin Immunol. 17 (3): 253-61.Liu C, et al. (1996) Cloning and characterization of an alternatively processed human type II interleukin-1 receptor mRNA. J Biol Chem. 271 (34): 20965-72.Van der Poll T, et al. (1997) Antiinflammatory cytokine responses during clinical sepsis and experimental endotoxemia: sequential measurements of plasma soluble interleukin (IL)-1 receptor type II, IL-10, and IL-13. J Infect Dis. 175 (1): 118-22.
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