ST2/IL-1 RL1 Protein, Human, Recombinant is expressed in HEK293 mammalian cells. The predicted molecular weight is 35.6 kDa and the accession number is Q01638-2.

Human

HEK293 Cells

T1,ST2V,ST2L,ST2,interleukin 1 receptor-like 1,IL33R,IL1RL1,IL‑1 R4,FIT-1,DER4

The secreted isoform of human IL1RL1 (NP_003847.2) (Met 1-Phe 328) with five amino acids (DDDDK) at the C-terminus was expressed and purified. Predicted N terminal: Lys 19

> 95 % as determined by SDS-PAGE

A Certificate of Analysis (CoA) containing reconstitution instructions is included with the products. Please refer to the CoA for detailed information.

It is recommended to store recombinant proteins at -20°C to -80°C for future use. Lyophilized powders can be stably stored for over 12 months, while liquid products can be stored for 6-12 months at -80°C. For reconstituted protein solutions, the solution can be stored at -20°C to -80°C for at least 3 months. Please avoid multiple freeze-thaw cycles and store products in aliquots.

IL-1 receptor–like 1 (IL1RL1) is a membrane receptor involved in TH2 inflammatory responses and eosinophilia. It has previously been described that levels of the interleukin-1 like 1 (IL1RL1) protein can be used to diagnose cardiovascular disease and determine the prognosis for a patient with cardiovascular disease. The ligand for IL1RL1 has been described and named IL-33. Mutants in IL1RL1 have been associated with blood eosinophil counts in a genome-wide association study and with asthma in family-based and case-control studies. As an important mediator involved in many immune and inflammatory responses, this cytokine has been implicated as a regulator of both the development and effector phases of type 2 helper T cell responses, and as a negative feedback modulator of macrophage proinflammatory function. IL33 is a specific ligand of ST2L and induces the production of Th2 cytokines.