Recombinant Cynomolgus IL-1 Beta/IL-1F2 Protein is expressed from E.coli with His tag at the C-terminal.It contains Ala117-Ser268.
The protein has a predicted MW of 18.33 kDa same as Tris-Bis PAGE result.
The affinity constant of 0.92 nM as determined in SPR assay (Biacore T200). See testing image for detail.
> 95% as determined by Tris-Bis PAGE;> 95% as determined by HPLC
Less than 1EU per ug by the LAL method.
Shipped at ambient temperature.
Lyophilized from 0.22um filtered solution in PBS,100mM L-arginine (pH 7.4). Normally 8% trehalose is added as protectant before lyophilization.
Centrifuge tubes before opening. Reconstituting to a concentration more than 100 ug/ml is recommended. Dissolve the lyophilized protein in distilled water.
Reconstituted protein stable at -80°C for 12 months, 4°C for 1 week. Use a manual defrost freezer and avoid repeated freeze-thaw cycles.