Table 5.

Expression of a gudB-lacZ fusion in minimal mediuma

Carbon sourceNitrogen sourceβ-Galactosidase activity
GlucoseAmmonia50
Glutamine102
Glutamate172
Proline183
Ornithine89
Arginine84
ProlineProline181
OrnithineOrnithine162
ArginineArginine144
  • a Cells of strain BB1401 were grown in TSS medium. β-Galactosidase activity was assayed and expressed in Miller units as described in Materials and Methods. All numbers are averages of at least two experiments, and the mean errors did not exceed 20%.