TABLE 1.
Transition rates derived from dwell time fits at various Mg2+ concentrations.
| Transition | 0 mM | 0.5 mM | 1 mM | 3 mM | 5 mM |
|---|---|---|---|---|---|
| kU,K [s−1] | 5.6 ± 0.14 (n = 313) | 5.8 ± 0.16 (n = 626) | 3.2 ± 0.04 (n = 637) | 4.6 ± 0.08 (n = 541) | 4.0 ± 0.07 (n = 366) |
| kK,U [s−1] | 1.1 ± 0.03 (n = 291) | 1.0 ± 0.03 (n = 575) | 1.6 ± 0.03 (n = 511) | 1.5 ± 0.03 (n = 439) | 2.2 ± 0.11 (n = 336) |
| kU,M [s−1] | n.d. (n = 21) | 0.8 ± 0.04 (n = 423) | 1.6 ± 0.04 (n = 339) | 2.0 ± 0.07 (n = 221) | 3.6 ± 0.10 (n = 110) |
| kM,U [s−1] | n.d. (n = 43) | 0.8 ± 0.04 (n = 476) | 0.6 ± 0.03 (n = 466) | 0.8 ± 0.05 (n = 324) | 0.8 ± 0.10 (n = 140) |
| kK,M [s−1] | 0.7 ± 0.05 (n = 73) | 0.6 ± 0.03 (n = 168) | 0.9 ± 0.05 (n = 367) | 1.4 ± 0.05 (n = 315) | 2.2 ± 0.07 (n = 272) |
| kM,K [s−1] | n.d. (n = 51) | 1.2 ± 0.03 (n = 115) | 0.7 ± 0.04 (n = 240) | 0.4 ± 0.03 (n = 212) | 0.6 ± 0.04 (n = 243) |
In cases where a reliable fit could not be obtained, i.e., due to an insufficient number of transitions (n), the rates were not determined (n.d.).