Figure 4.
Mass spectra and structures of M1 and M2, the two products from incubations of TAZ, NADPH and EtaA in 100 mM tricine buffer, pH 9.0, at 37 °C for 1 h: (a) M1 has a molecular ion [M+H]+ = m/z 269.09, with fragment ions at m/z 205.18 and 163.18; (b) M2 has a molecular ion [M+H]+ = m/z 203.17 with a fragment ion at m/z 161.16.