Synonym
Interleukin-21; IL-21; Za11; CVID11
Source / expression
Recombinant GMP Human IL-21 is expressed from E.coli without tag.It contains Gln32-Ser162 [Accession | Q9HBE4-1].
Molecular weight
The protein has a predicted MW of 15.4 kDa same as Bis-Tris PAGE result.
Endotoxin
≤ 0.01 EU per μg by the LAL method.
Purity
≥ 95% as determined by SEC-HPLC.
Formulation
Lyophilized from 0.22 μm filtered solution in PBS (pH 7.4). Normally 8% trehalose is added as protectant before lyophilization.
Reconstitution
Dissolve the lyophilized protein in distilled water. Please refer to the Certificate of Analysis for detailed instructions.
Storage
The product is shipped with ice bag. Store it immediately at -20°C±5°C upon arrival.
-20°C±5°C for 36 months in lyophilized state.
Recommend to aliquot the protein into smaller quantities for optimal storage. Please minimize freeze-thaw cycles.
