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Interleukin-1 receptor-like 1

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Target id: 1735

Nomenclature: Interleukin-1 receptor-like 1

Family: Immunoglobulin-like family of IL-1 receptors

Quaternary Structure: Complexes
Interleukin-33 receptor
Gene and Protein Information Click here for help
Species TM AA Chromosomal Location Gene Symbol Gene Name Reference
Human 1 556 2q12.1 IL1RL1 interleukin 1 receptor like 1 4
Mouse 1 567 1 19.19 cM Il1rl1 interleukin 1 receptor-like 1
Rat 1 566 9q22 Il1rl1 interleukin 1 receptor-like 1
Previous and Unofficial Names Click here for help
DER4 | IL33R | ST2 | ST2L | FIT1 | Fos-responsive gene 1 | Ly84 | ST2V
Database Links Click here for help
ChEMBL Target
Ensembl Gene
Entrez Gene
Human Protein Atlas
Immunopharmacology Comments
IL1RL1 (ST2) is the ligand binding subunit of the functional receptor for IL-33. It is mainly expressed on mast cells, eosinophils and other immune cells [2]. The ST2/IL-33 axis is recognized as playing an important role in the development/exacerbation of IgE-dependent inflammation such as asthma and atopic dermatitis [1,3]. Blockade of ST2 (and/or IL-33; see our comment regarding investigational anti-IL-33 mAb AMG-282) represent potential novel mechanisms for pharmaceutical intervention to suppress allergy and mast cell-eosinophil interplay.
Cell Type Associations
Immuno Cell Type:  Mast cells
References:  2
Immuno Process Associations
Immuno Process:  Cytokine production & signalling
Immuno Process:  Inflammation
Immuno Process:  T cell (activation)
Immuno Process:  B cell (activation)
Immuno Process:  Immune regulation
Immuno Process:  Chemotaxis & migration
Immuno Process:  Cellular signalling


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1. Bandara G, Beaven MA, Olivera A, Gilfillan AM, Metcalfe DD. (2015) Activated mast cells synthesize and release soluble ST2-a decoy receptor for IL-33. Eur J Immunol, 45 (11): 3034-44. [PMID:26256265]

2. Gangwar RS, Landolina N, Arpinati L, Levi-Schaffer F. (2017) Mast cell and eosinophil surface receptors as targets for anti-allergic therapy. Pharmacol Ther, 170: 37-63. [PMID:27773785]

3. Hsu CL, Neilsen CV, Bryce PJ. (2010) IL-33 is produced by mast cells and regulates IgE-dependent inflammation. PLoS ONE, 5 (8): e11944. [PMID:20689814]

4. Tominaga S, Yokota T, Yanagisawa K, Tsukamoto T, Takagi T, Tetsuka T. (1992) Nucleotide sequence of a complementary DNA for human ST2. Biochim Biophys Acta, 1171 (2): 215-8. [PMID:1482686]

How to cite this page

Immunoglobulin-like family of IL-1 receptors: Interleukin-1 receptor-like 1. Last modified on 22/03/2017. Accessed on 21/06/2024. IUPHAR/BPS Guide to PHARMACOLOGY,