Recombinant Human IL-1R2/IL-1 RII/CD121b Protein is expressed from HEK293 with His tag at the C-Terminus.
It contains Phe14-Glu355 [Accession | P27931].

The protein has a predicted MW of 39.2 kDa. Due to glycosylation, the protein migrates to 60-70 kDa based on Bis-Tris PAGE result.

> 95% as determined by Bis-Tris PAGE
> 95% as determined by HPLC

Less than 1EU per μg by the LAL method.

Lyophilized from 0.22μm filtered solution in PBS (pH 7.4). Normally 8% trehalose is added as protectant before lyophilization.

Centrifuge the tube before opening. Reconstituting to a concentration more than 100 μg/ml is recommended. Dissolve the lyophilized protein in distilled water.

-20 to -80°C for 12 months as supplied from date of receipt.
-80°C for 3 months after reconstitution.
Recommend to aliquot the protein into smaller quantities for optimal storage. Please minimize freeze-thaw cycles.