TABLE 1.

Acid tolerance responses of S. mutans UA159, TJ-relA, and JL-ΔrelA biofilms

StrainpH after 50 min of glycolysisaATPase activity (nmol of PO4 min−1 mg of protein−1)aGlucose PTS activity (nmol min−1 mg of protein−1)b
UA1593.727 ± 0.06392.391 ± 0.301130.7 ± 45.33
TJ-relA3.545 ± 0.07552.231 ± 0.468233.65 ± 56.7
JL-ΔrelA3.608 ± 0.05482.177 ± 0.455218.1 ± 74.92
  • a Mean ± standard deviation for three independent experiments.

  • b Mean ± standard deviation for five independent experiments.