Biotinylated Human GDF15 Protein, His-Avi Tag

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Specifications Source Biotinylated Human GDF15 Protein is expressed from E.coli with His tag and Avi tag at the N-terminal. It contains Ala197-Ile308.[Accession | Q99988-1] Molecul ar Weight The protein has a predicted MW of 15.19 kDa same as Tris-Bis PAGE result. Endotoxin Less than 1EU per μg by the LAL method. Purity > 95% as determined by Tris-Bis PAGE Activity ELISA Data: Immobilized Human GFRAL, hFc Tag at 1μg/ml (100μl/Well) on the plate. Dose response curve for Biotinylated Human GDF15, His Tag with the EC50 of 17.5ng/ml determined by ELISA. Formulation Lyophilized from 0.22μm filtered solution in 50mM HAc (pH 2.9). Normally 8% trehalose is added as protectant before lyophilization. Reconstitution Centrifuge tubes before opening. Reconstituting to a concentration more than 100 μg/ml is recommended. Dissolve the lyophilized protein in 50mM HAc (pH 2.9). Storage The product should be stored at -25~-15℃ for 1 year from the date of receipt. 2-7 days, 2 ~8 °C under sterile conditions after reconstitution. 3 months, -25~-15℃ under sterile conditions after reconstitution. Recommend to aliquot the protein into smaller quantities when first used and avoid repeated freeze-thaw cycles. Note 1.Please operate with lab coats and disposable gloves for your safety. 2.This product is for research use only. Show more