The sucrase operon was transferred from the donor Escherichia coli MM2
3 strain by the phage P1 into the Escherichia coli TG1, mini-Mu phage
into the strain Escherichia coli JT4 and subsequently to the basic clo
ning vectors. We have prepared strains of Escherichia coli XL1 Blue, E
scherichia coli JM109 that are able to grow on various concentrations
of sucrose. We also transferred the sucrase operon by conjugation of m
obile plasmid pUR400 into the strain Escherichia coli MC4100.