Detection of IL‑1 RI in B220+ Mouse Splenocytes by Flow Cytometry. B220+ mouse splenocytes were stained with Rat Anti-Mouse IL‑1 RI Fluorescein‑conjugated Monoclonal Antibody (Catalog # FAB7712F, filled histogram) or isotype control antibody (Catalog # IC013F, open histogram). View our protocol for Staining Membrane-associated Proteins.
Preparation and Storage
The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage
Protect from light. Do not freeze.
12 months from date of receipt, 2 to 8 °C as supplied.
Background: IL-1 RI
The type I IL-1 receptor (IL-1 RI, designated IL-1 R1 and CD121a) is one of at least nine members of the IL-1 R family within the Toll/IL-1 R (TIR) superfamily. IL‑1 RI is an ~80 kDa type I transmembrane (TM) protein that binds the pleiotropic cytokines IL-1 alpha and IL-1 beta, plus the IL-1 Receptor antagonist (IL-1 Ra). Signal transduction requires complex formation with the IL-1 R accessory protein (IL-1 R AcP/IL-1 R3), another type I TM protein. This complex recruits the adaptor protein MyD88 to initiate signaling in the NF kappa B pathway. Mouse IL-1 RI cDNA encodes a 576 amino acid (aa) protein that contains a 19 aa signal sequence, a 319 aa extracellular domain (ECD) with three C2-type Ig-like domains, a 21 aa TM domain and a 217 aa cytoplasmic region with a TIR domain. Mouse IL-1 RI shares 64%, 83%, 60%, 61% and 55% aa identity with human, rat, canine, equine and bovine IL-1 RI, respectively. The role of IL-1 in inflammation is under several levels of control, including expression and activation of IL-1 alpha and IL-1 beta, expression of IL-1 RI and its accessory and adaptor proteins, and negative regulators such as the IL‑receptor family member, IL-1 RII/IL-1 R2. IL-1 RI is expressed predominantly by T cells, fibroblasts, and endothelial cells and mediates acute phase inflammatory responses including fever.
Interleukin 1 Receptor I
Entrez Gene IDs:
3554 (Human); 16177 (Mouse)
CD121 antigen-like family member A; CD121a antigen; CD121a; IL-1 RI; IL1R; IL1R1; IL1RI; IL-1RI; IL1RT1; IL-1RT1; IL-1RT-1; Interleukin 1 Receptor 1; interleukin 1 receptor, type I; interleukin receptor 1; interleukin-1 receptor type 1; p80
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