Abstract:Changing positions of genes on a chromosome is an informative way of learning about why an existing chromosome structure and gene order was selected by evolution in bacteria. In Salmonella gyrA and gyrB – genes encoding DNA gyrase – enzyme that introduces negative supercoils in DNA, are located almost at opposite poles of a chromosome. However, in many other bacteria they are arranged in a gyrBA operon. In order to investigate the significance of this fact, gyrBA operon was made in Salmonella by bringing gyrA … Show more
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