Assay type 'Protein-protein Interaction'

For analyzing the binding of CcpA-HPrSer46P-complexes to various cre-elements, Surface Plasmon Resonance was used. All operations were carried out on a Biacore X instrument (Biacore, Uppsala, Sweden). Biotinylated cre DNA was coupled on a Neutravidin coated chip in flowcell two, a biotinylated reference DNA in flowcell one. For visualizing only the interactions of the CcpA-HPrSer46P-complex with the cre elements, CcpA was saturated with 50µM HPrSer46P. Titrations were carried out with 5-100nM ...