Recombinant Human EGF Protein is expressed from E.coli without tag.It contains Asn971-Arg1023.
HOMG4; EGF; URG
The protein has a predicted MW of 5.6 kDa same as Tris-Bis PAGE result.
Immobilized Human EGF, No Tag at 2ug/ml (100ul/well) on the plate. Dose response curve for Human EGFR, hFc Tag with the EC50 of 1.3ug/ml determined by ELISA (QC Test). The affinity constant of 0.18 nM as determined in SPR assay (Biacore T200). See testing image for detail.
> 95% as determined by Tris-Bis PAGE;> 95% as determined by HPLC
Less than 1EU per ug by the LAL method.
Shipped at ambient temperature.
Lyophilized from 0.22um filtered solution in PBS (pH 7.4). Normally 8% trehalose is added as protectant before lyophilization.
Centrifuge tubes before opening. Reconstituting to a concentration more than 100 ug/ml is recommended. Dissolve the lyophilized protein in distilled water.
Reconstituted protein stable at -80°C for 12 months, 4°C for 1 week. Use a manual defrost freezer and avoid repeated freeze-thaw cycles.