FIGURE 4. Inhibition and modification of wild-type SppA with FP-biotin.
Purified wild-type, S409A and SppA proteins were incubated in the presence or absence of FP-biotin (final 40 µM) for 10 min, followed by activity assays (A and C) or analyzed by SDS-polyacrylamide gel electrophoresis and immunoblotting with an avidin-horseradish peroxidase conjugate (B and D).