Table 2.

Effect of growth temperature on protease activity ofP. gingivalis W50a

Growth temp (°C)Mean (± SD) arginine-specific activity (nmol mg−1 min−1[n = 12])Mean (± SD) lysine-specific activity (nmol mg−1 min−1 [n = 12])
WSWS
37325 ± 7479 ± 4262 ± 1815 ± 8
39109 ± 59* 21 ± 9* 22 ± 10* 6 ± 2*
4158 ± 16** 15 ± 5** 17 ± 3** 7 ± 1**
  • a W, whole culture; S, supernatant; *, P < 0.01 for results at 37°C versus results at 39°C; **, P < 0.001 for results at 37°C versus results at 41°C.