ST2/IL-1 RL1 Protein, Human, Recombinant (hFc Tag)

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.

DER4 Protein, Human; FIT-1 Protein, Human; IL1RL1 Protein, Human; IL33R Protein, Human; IL 1 R4 Protein, Human; ST2 Protein, Human; ST2L Protein, Human; ST2V Protein, Human; T1 Protein, Human

Measured by its binding ability in a functional ELISA. Immobilized human IL-33 at 10 μg/ml (100 μl/well) can bind human IL1RL1 / Fc Chimera with a linear range of 0.31-5 ng/ml.

Lyophilized from sterile PBS, pH 7.4. Please contact us for any concerns or special requirements. Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween 80 are added as protectants before lyophilization. Please refer to the specific buffer information in the hard copy of CoA.

The recombinant human IL1RL1/Fc is a disulfide-linked homodimeric protein. The reduced monomer consists of 548 amino acids and has a calculated molecular mass of 67.1 kDa. As a result of glycosylation, the apparent molecular mass of rh IL1RL1/Fc monomer is approximately 85-95 kDa in SDS-PAGE under reducing conditions.

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. Stable for 1 year at -20°C or below from date of shipment. For maximum recovery of product, centrifuge the original vial after thawing and opening the cap. For long-term storage, aliquot and store at -20°C or below. Avoid repeated freeze-thaw cycles.