Table 3

Aconitase, IDH, and fumarase activities in crude cell extracts of B. fragilis ADB77 (wild-type) and the aconitase mutants ADB237 and ADB245

StrainSpecific activity [unit (mg protein)−1]*
AconitaseIDHFumarase
ADB7789  ± 106.0  ± 0.8810  ± 7
ADB237<0.4<0.3820  ± 40
ADB245<0.26.0  ± 0.3680  ± 30
  • * Values are the mean ± SD from three determinations.