分子別名（Synonyms）

Za11; IL-21;Interleukin-21;

表達區(qū)間及表達系統(tǒng)（Source）

Biotinylated Human IL-21 Protein is expressed from E.coli with His tag and Avi tag at the N-Terminus. It contains Gln32-Ser162.[Accession | Q9HBE4-1]

分子量大?。∕olecular Weight）

The protein has a predicted MW of 18.30 kDa same as SDS-PAGE result.

內(nèi)毒素（Endotoxin）

Less than 1EU per μg by the LAL method.

純度（Purity）

> 95% as determined by SDS-PAGE

活性（Activity）

ELISA Data: Immobilized Human IL-21R, hFc Tag at 0.5μg/ml (100μl/Well) on the plate. Dose response curve for Biotinylated Human IL-21, His Tag with the EC50 of 2.5ng/ml determined by ELISA.

制劑（Formulation）

Lyophilized from 0.22 μm filtered solution in 20mM NaAc, 500mM NaCl (pH 5.5). Normally 8% trehalose is added as protectant before lyophilization.

重構(gòu)方法（Reconstitution）

Centrifuge the tube before opening. Reconstituting to a concentration more than 100 μg/ml is recommended. Dissolve the lyophilized protein in 20mM NaAc, 500mM NaCl (pH 5.5).