ST2:Fc, Recombinant, Human (Interleukin-1 Receptor-like 1, IL-1 Receptor-like 1, IL1RL1, IL-33 Recep

The ST2 (Interleukin-1 receptor-like 1, Interleukin-33 receptor) gene was originally identified as a gene induced by serum or oncogene expression in fibroblasts. The gene produces a shorter soluble secreted form (ST2) and a longer, transmembrane form (ST2L) by alternative splicing. Soluble ST2 has been shown to downregulate the expression of TLR1 and TLR4. ST2L negatively regulates TLR4 signaling and induces endotoxin tolerance, and enhances Th2 responses. IL-33 is the specific ligand for ST2L. Biological Activity: Interacts with human IL-33. Sequence: Signal peptide and the sequence of isoform 2 of human ST2 (aa 1-328) are fused at the C-terminus to the Fc portion of human IgG1. Storage and Stability: Short-term Storage: +4°C, Long-term Storage: -20°C, Working aliquots are stable for up to 3 months when stored at -20°C.