Isolation and Characterization of a ? Transducing Bacteriophage Carrying the cysE Gene of Escherichia Coli K-12

Abstract

A specialized" transducing phage carrying the cysE and gpsA genes of E. coli K-12 has been isolated. The transducing phage has been separated from the helper phage on equilibrium gradients and has been shown to be defective. Evidence is presented that the phage kil gene is not expressed.