Protein A is a cell wall protein deriving from Staphylococcus aureus which exhibits unique binding properties for IgG from a variety of mammalian species and for some IgM and IgA as well. It binds with the Fc region of immunoglobulins through interaction with the heavy chain. It couples to a wide variety of reporter molecules including fluorescent dyes， enzyme markers， biotin， colloidal gold and radioactive iodine without affecting the antibody binding site. Recombinant Protein A was developed to increase the specificity of the molecule for IgG and is widely used both in research and bioprocessing. The recombinant protein A is produced by expressing a modified protein A gene in E.coli. A specific purification process with strict quality control was taken to get the recombinant protein A with the purity of more than 98% ， no human IgG affinity step is used during validated fermentation and purification and devoid of bacterial contaminant found normally in native Protein A. （Free of Stap
序列
请咨询我们客服或者请查看品牌官方网站
来源宿主
大肠杆菌中重组表达
溶解建议
Sterile Filtered White lyophilized （freeze-dried） powder. The protein was lyophilized from a concentrated （1mg/ml） solution containing no additives.
