Table 3.
Summary of time-resolved fluorescence measurements of AEDANS-labeled single-cys mutants of Pdc
Pdc mutant | τmean∗† (ns) | β1§ | ϕ1‡ (ns) | β2§ | ϕ2‡ (ns) | β3§ | ϕ3‡ (ns) | β4§ | ϕ4 (ns) | ||
---|---|---|---|---|---|---|---|---|---|---|---|
Cys-89 | Not-P | 15.00 | 0.027 | 0.4 | 0.093 | 2.5 | 0.078 | 13 | 0.032 | > 50 | |
+ 14-3-3 | 15.01 | 0.044 | 0.5 | 0.093 | 3.0 | 0.068 | 16 | 0.025 | > 50 | ||
P | 14.67 | 0.029 | 0.4 | 0.092 | 2.1 | 0.066 | 8 | 0.043 | > 50 | ||
+ 14-3-3 | 15.52 | 0.013 | 0.3 | 0.076 | 2.1 | 0.066 | 9 | 0.075 | > 50 | ||
Cys-97 | Not-P | 15.28 | 0.054 | 0.5 | 0.083 | 3.3 | 0.056 | 12 | 0.037 | > 50 | |
+ 14-3-3 | 15.28 | 0.035 | 0.4 | 0.090 | 2.5 | 0.059 | 11 | 0.046 | > 50 | ||
P | 14.73 | 0.052 | 0.5 | 0.096 | 2.5 | 0.066 | 15 | 0.016 | > 50 | ||
+ 14-3-3 | 15.33 | 0.052 | 0.5 | 0.076 | 3.3 | 0.055 | 15 | 0.047 | > 50 | ||
Cys-148 | Not-P | 15.70 | 0.006 | 0.3 | 0.088 | 2.7 | 0.071 | 12 | 0.065 | > 50 | |
+ 14-3-3 | 15.51 | 0.022 | 0.5 | 0.077 | 3.0 | 0.074 | 12 | 0.057 | > 50 | ||
P | 14.99 | 0.023 | 0.4 | 0.078 | 2.5 | 0.084 | 11 | 0.045 | > 50 | ||
+ 14-3-3 | 15.14 | 0.011 | 0.3 | 0.075 | 2.1 | 0.083 | 10 | 0.061 | > 50 | ||
Cys-157 | Not-P | 14.70 | 0.023 | 0.5 | 0.094 | 3.0 | 0.096 | 18 | 0.017 | > 50 | |
+ 14-3-3 | 14.69 | 0.034 | 0.7 | 0.080 | 2.7 | 0.100 | 19 | 0.016 | > 50 | ||
P | 14.13 | 0.045 | 0.6 | 0.100 | 3.3 | 0.071 | 18 | 0.014 | > 50 | ||
+ 14-3-3 | 14.32 | 0.038 | 0.4 | 0.124 | 3.0 | 0.034 | 23 | 0.034 | > 50 | ||
Cys-168 | Not-P | 15.43 | 0.032 | 0.6 | 0.109 | 2.7 | 0.079 | 25 | 0.010 | > 50 | |
+ 14-3-3 | 15.42 | 0.029 | 0.5 | 0.099 | 2.7 | 0.087 | 18 | 0.015 | > 50 | ||
P | 14.92 | 0.047 | 0.5 | 0.098 | 2.7 | 0.075 | 15 | 0.010 | > 50 | ||
+ 14-3-3 | 15.44 | 0.022 | 0.3 | 0.096 | 2.7 | 0.071 | 18 | 0.041 | > 50 |
SD > 0.05 ns.
The mean fluorescent lifetime (τmean) was calculated using Eq. 2.
SD < 20%.
SD < 0.01.