Fig. 4From: Enzymatic production of 4-O-methyl d-glucaric acid from hardwood xylanNSI-MS spectra for the formation of methyl glucaric acid (224.05 g/mol) by GOOX-Y300A. Mass spectra of GOOX-Y300A activity on 1 mM and 10 mM MeGlcA (a, b, correspondingly); notably, MeGlcA and methyl glucaric acid displayed different ionization potentials. The corrected mass spectrum to confirm the addition of one oxygen (15.9949 m/z) (c)Back to article page