Research Article

Effects of N-Terminal and C-Terminal Polyhistidine Tag on the Stability and Function of the Thermophilic P450 CYP119

Figure 4

The excitation (solid) and emission (dash) fluorescence of the Amplex Red oxidation product (resorufin) catalyzed by WT CYP119. Reaction components were 10 μM Amplex Red, 1.5 mM H2O2, and 1.5 μM WT CYP119 in 50 mM sodium phosphate at room temperature at pH 7.4, spectra taken after 40 minutes.