TABLE 2.

β-Galactosidase activity of an E. coli cyaA mutant (strain SP850) complemented with S. oneidensis cya genes

Strainβ-Galactosidase activity (Miller units)a
E. coli SP85026.0 ± 10.5
SP850 + pJB3Cm631.7 ± 4.2
SP850 + cAMP1,284.6 ± 143.8
SP850 + S. oneidensis cyaA1,034.9 ± 266.7
SP850 + S. oneidensis cyaC1,057.8 ± 281.0
SP850 + S. oneidensis Po-cyaB747.6 ± 80.6
SP850 + cyaB10.7 ± 1.6
  • a The data are the means ± standard deviations of three independent experiments performed in duplicate.