TABLE 3.
Amount of iron bounda
| Prepn | Amt of iron bound (μmol/mg [dry wt] of cells)
|
|||
|---|---|---|---|---|
| Replicate 1b | Replicate 2 | Replicate 3 | Mean | |
| P. aeruginosa PAO1 (A+ B+) | 1.097 ± 0.127 | 1.077 ± 0.142 | 1.044 ± 0.187 | 1.073 ± 0.027 |
| P. aeruginosa AK1401 (A+ B−) | 1.043 ± 0.148 | 1.067 ± 0.168 | 1.026 ± 0.106 | 1.045 ± 0.021 |
| P. aeruginosa dps89 (A− B+) | 1.681 ± 0.107 | 1.571 ± 0.125 | 1.618 ± 0.253 | 1.623 ± 0.055d |
| P. aeruginosa rd7513 (A− B−) | 1.038 ± 0.037 | 1.022 ± 0.208 | 1.052 ± 0.026 | 1.037 ± 0.015 |
| Acellular controlc | 0 | 0 | 0 | 0 |
a
Whole cells were treated with a 1 mM solution of Fe(NO3)3 · 9H2O for 15 min at 22°C.
b
Data are values from separate measurements of three whole-cell–metal interactions.
c
Amount of metal which precipitated chemically during the 15-min treatment period.
d
The value for dps89 is significantly different from all other values, as determined by the two-tailed t test.