Recombinant Human IL-1RL1 / ST2 Protein, Fc Tag, 200 µg

Background
Interleukin 1 receptor-like 1 (IL1RL1) is also known as ST2, DER4, FIT-1, IL33R, ST2L, ST2V, which belongs to the interleukin-1 receptor family. IL1RL1 contains three Ig-like C2-type (immunoglobulin-like) domains and one TIR domain. IL1RL1 is receptor for interleukin-33 (IL-33), its stimulation recruits MYD88, IRAK1, IRAK4, and TRAF6, followed by phosphorylation of MAPK3/ERK1 and/or MAPK1/ERK2, MAPK14, and MAPK8. IL1RL1 possibly involved in helper T-cell function. IL1RL1 can interact with MYD88, IRAK1, IRAK4, and TRAF6.

Source
Recombinant Human IL-1RL1, Fc Tag (IL1-H5250) is expressed from human 293 cells (HEK293). It contains AA Lys 19 - Pro 323 (Accession # NP_003847).
Predicted N-terminus: Lys 19

Molecular Characterization
This protein carries a human IgG1 Fc tag at the C-terminus.
The protein has a calculated MW of 61.0 kDa. The protein migrates as 80-100 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.

Endotoxin
Less than 1.0 EU per μg by the LAL method.

Purity
>95% as determined by SDS-PAGE.

Formulation
Lyophilized from 0.22 μm filtered solution in Tris with Glycine, Arginine and NaCl, pH7.5 with trehalose as protectant.

Reconstitution
Please see Certificate of Analysis for specific instructions.
For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.

Storage
For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Please avoid repeated freeze-thaw cycles.
This product is stable after storage at:
-20°C to -70°C for 12 months in lyophilized state;
-70^°C for 3 months under sterile conditions after reconstitution.
 
Bioactivity
Please refer to product data sheet.

Clinical and Translational Updates

(1) "Endogenous IL-33 Accelerates Metacestode Growth during Late-Stage Alveolar Echinococcosis"
Autier, Manuel, Lundstroem-Stadelmann et al
Microbiol Spectr (2023)
(2) "Histamine Activates Human Eosinophils via H2R and H4R Predominantly in Atopic Dermatitis Patients"
Beyer, Kabatas, Mommert et al
Int J Mol Sci (2022) 23 (18)
(3) "Interleukin-33 (IL-33): A critical review of its biology and the mechanisms involved in its release as a potent extracellular cytokine"
Cayrol, Girard
Cytokine (2022) 156, 155891
Showing 1-3 of 30 papers.