Fig. 4From: Molecular dissection of the replication system of plasmid pIGRK encoding two in-frame Rep proteins with antagonistic functionsElectrophoretic mobility shift assay (EMSA). a and b show binding of RepR(6His) and RepR’(6His) to HEX- labeled DNA fragments of pIGRK. Nucleoprotein complexes are marked with arrows. pUC – control DNA fragment from plasmid pUC18Back to article page