mouse monoclonal IgG1; IRAK-1 Antibody (F-4) is an IgG1 κ mouse monoclonal IRAK-1 antibody (also designated IRAK1 antibody, or interleukin 1 receptor associated kinase 1 antibody) that detects the IRAK-1 protein of mouse, rat and human origin by WB, IP, IF, IHC(P) and ELISA. IRAK-1 Antibody (F-4) is available as both the non-conjugated anti-IRAK-1 antibody form, as well as multiple conjugated forms of anti-IRAK-1 antibody, including agarose, HRP, PE, FITC and multiple Alexa Fluor® conjugates. Three structurally related ligands for IL-1Rs have been described. These include two agonists, IL-1a and IL-1b, and a specific receptor antagonist, IL-1Ra. Two distinct receptors designated IL-1RI and IL-1RII have been identified, each of which belong to the Ig superfamily. The preponderance of evidence suggests IL-1RI to be the functional IL-1 receptor. Binding of IL-1 to its cognate receptor results in the activation of the NFkB signaling pathway. The IL-1-dependent kinase termed IRAK (for IL-1 receptor-associated kinase) co-immunoprecipitates with activated IL-1RI and has been implicated as an upstream mediator of NFkB activation. Additional support for this assertion comes from the fact that a related Drosophila protein, Pelle, is a known upstream activator of Dorsal, the Drosophila homolog of NFkB.