Alternative Names

CD120b, Etanercept, p75TBPII, p75TNFR, TNF RII, TNF-R2, TNF-R75, TNFR80, TNFRSF1B, TNFR2, TBPII, TNFBR, TNFR1B

Species

Human

Expression Sequence

Leu23-Asp257

Accession

P20333-1

Tag

C-hFc

Expression System

HEK293

Molecular Weight

The protein has a predicted MW of 51.89 kDa. Due to glycosylation, the protein migrates to 70-80 kDa based on SDS-PAGE result.

Purity

> 95% as determined by SDS-PAGE and HPLC.

Endotoxin

< 1.0 EU per μg by the LAL method.

Formulation

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

Appearance

Lyophilized Powder

Biological Activity

【ELISA Data】 Immobilized Human TNF alpha, His Tag at 1μg/ml (100μl/well) on the plate. Dose response curve for Human TNFR2, hFc Tag with the EC50 of 7.1ng/ml determined by ELISA . 【ELISA Data】 Immobilized Human TNFR2, hFc Tag at 0.5μg/ml (100μl/well) on the plate. Dose response curve for Biotinylated Anti-TNFR2 Antibody, hFc Tag with the EC50 of 19ng/ml determined by ELISA.

Reconstitution Method

Before opening, centrifuge briefly. Reconstitute the lyophilized protein with distilled water to a concentration exceeding 100 μg/mL. Aliquot after initial reconstitution to avoid repeated freeze-thaw cycles.