The plasmid CIp10-ECE1 (3 (link), 32 (link)), containing the ECE1 gene and its upstream and downstream intergenic regions, was used as a parental template for site-directed mutagenesis. Site-directed mutagenesis was performed using the QuikChange site-directed mutagenesis system (Agilent). Alanine substitutions in the ECE1 gene were screened by restriction endonuclease digestion, and mutations were confirmed by DNA sequencing. Mutagenized constructs were linearized by digestion with StuI and concentrated by ethanol precipitation prior to transformation.
Free full text: Click here