描述
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] |
Molecular 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 |
<1EU per μg by the LAL method. |
Purity |
> 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.
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