Table 3. Binding affinities of Mtr4 and mutants on a poly(A) substrate as determined by fluorescence anisotropya.
Kd (μM) | |
---|---|
Mtr4WT | 2.8 ± 0.9 |
Mtr4archless | 4.5 ± 0.6 |
Mtr4R1030A | 2.6 ± 1.0 |
Mtr4E1033A | 2.0 ± 0.6 |
Mtr4R1030A-archless | > 10 |
Mtr4E1033A-archless | 4.8 ± 0.6 |
Binding affinities > 10 μM were not quantified by anisotropy. Data presented here represent averages from three independent experiments; error bars represent SD.
aMethods and equations used to derive kinetic constants are found in the ‘Materials and Methods’ section.