TABLE 2.
Scores calculated from a pairwise specificity matrixa
| Cation | Score at a concn of:b
|
|
|---|---|---|
| 1.25 mM | 2.5, 5, or 10 mM | |
| Ca(II) | 14 | 15 |
| Mg(II) | 15 | 14 |
| Co(II) | 14 | 13 |
| Mn(II) | 14 | 13 |
| Ni(II) | 14 | 13 |
| Cd(II) | 13 | 12 |
| Cu(II) | 13 | 12 |
| Fe(III) | 13 | 12 |
| Zn(II) | 13 | 12 |
| Ag(I) | 12 | 11 |
| Hg(II) | 12 | 11 |
| Fe(II) | 11 | 10 |
| Pb(II) | 2 | 3 |
a
See Materials and Methods.
b
Higher scores indicate better correlation of previously measured association constants with the observed ssaG-gfp regulatory effects. The results for chelator concentrations of 2.5, 5, and 10 mM were identical and thus are reported together.