Fig. 5From: Recombinant expression of Barnase in Escherichia coli and its application in plasmid purificationSDS-PAGE analysis of a concentrated RNase activity containing fraction (E3 of Fig. 4) from a hydrophobic interaction chromatography that followed a cation exchange chromatography purification. The lanes flanking the sample are loaded with Molecular size marker with the molecular weights in kDa shown to the rightBack to article page