Figure 9.

¹⁹F NMR spectra of 6-trifluoromethyl-7-oxo-8-ribityllumazine (Compound 7) in titration experiments with riboflavin synthase of S. pombe (wild type). The initial concentration of the protein was 0.36 mM. Compound 7 was added to the concentrations indicated. The spectra are displayed with equal intensities of the signals at 15.6 ppm (indicated by *). For other details see legend to Fig. 5.