Recombinant Human Interleukin-1 receptor antagonist protein (IL1RN) (Active)

Inhibits the activity of interleukin-1 by binding to receptor IL1R1 and preventing its association with the coreceptor IL1RAP for signaling. Has no interleukin-1 like activity. Binds functional interleukin-1 receptor IL1R1 with greater affinity than decoy receptor IL1R2; however, the physiological relevance of the latter association is unsure. {ECO:0000269|PubMed:7775431}.

RPSGRKSSKM QAFRIWDVNQ KTFYLRNNQL VAGYLQGPNV NLEEKIDVVP IEPHALFLGI HGGKMCLSCV KSGDETRLQL EAVNITDLSE NRKQDKRFAF IRSDSGPTTS FESAACPGWF LCTAMEADQP VSLTNMPDEG VMVTKFYFQE DE

Fully biologically active when compared to standard. The ED50 as determined by inhibiting IL-1α - dependent proliferation of murine D10S cells is less than 40 ng, ml, corresponding to a specific activity of 2.5 104 IU, mg in the presence of 50 pg, ml rHuIL-1α .

The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself. Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.