Biotinylated Human IGF1R/CD221 Protein, His-Avi Tag

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Specifications Source Biotinylated Human IGF1R/CD221 Protein is expressed from HEK293 with His tag and Avi tag at the C-Terminus. It contains Glu31-Asn932.[Accession | P08069] Mole cular Weight The protein has a predicted MW of 105.8 kDa (alpha subunit) and 23 kDa (beta subunit). Due to glycosylation, the protein migrates to 110-120 kDa (alpha subunit) and 52-55 kDa (beta subunit) based on Tris-Bis PAGE result. Endotoxin 95% as determined by Tris-Bis PAGE and HPLC Activity ELISA Data: Immobilized Anti-IGF1R Antibody at 0.5μg/ml (100μl/well) on the plate. Dose response curve for Biotinylated Human IGF1R, His Tag with the EC50 of 48.0ng/ml determined by ELISA. ELISA Data:Immobilized Biotinylated Human IGF1R, His Tag at 5μg/ml (100μl/well) on the streptavidin precoated plate (5μg/ml). Dose response curve for Human IGF-I, hFc Tag with the EC50 of 0.73μg/ml determined by ELISA. Formulation Lyophilized from 0.22μm filtered solution in PBS (pH 7.4). Normally 8% trehalose is added as protectant before lyophilization. Reconstitution Centrifuge the tube before opening. Reconstituting to a concentration more than 100 μg/ml is recommended. Dissolve the lyophilized protein in distilled water. Storage The product should be stored at -25~-15℃ for 1 year from 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