Table 4. Kinetic Values for PFTase and the Y205A Mutant Using the Cyclo-Octene Containing Analogue (3) as the Substratea.
protein | kcat (s–1) | KM (μM) | kcat/KM (μM s–1) | rel. kcat/KM |
---|---|---|---|---|
WT | 0.017 ± 0.002 | 0.2 ± 0.1 | 0.08 ± 0.04 | 1 |
Y205A | 0.082 ± 0.007 | 0.5 ± 0.2 | 0.16 ± 0.07 | 2 |
All values are presented as kinetic parameters with the peptide concentration held constant at 2 μM. Values are reported here as the averages and standard deviations from three separate experiments.