Fig. 3: Positive ion ESI-MS spectra of MonCI reaction products.
From: Triepoxide formation by a flavin-dependent monooxygenase in monensin biosynthesis
MonCI produces single, double, and triple epoxidation products of farnesyl 4-hydroxybenzoate. Mass spectra of a Peak 1 (Fig. 2b) contained mass corresponding to unreacted farnesyl 4-hydroxybenzoate (theoretical [M-H]+ = 343.2267 m/z). b Peak 2 (Fig. 2b) contained mass corresponding to a monoepoxide product (theoretical [M-H]+ = 359.2216 m/z). c Peak 3 (Fig. 2b) contained mass corresponding to a bisepoxide product (theoretical [M-H]+ = 375.2166 m/z). d Peak 4 (Fig. 2b) contained mass corresponding to the triepoxide product (theoretical [M-H]+ = 391.2116).
