Fig. 3From: Enzymatic production of 4-O-methyl d-glucaric acid from hardwood xylanDocking of MeGlcA and glucose to GOOX variants. a MeGlcA formed four hydrogen bonds (pink line) in the wild-type enzyme, the methyl group (starred) pointed toward the Y300 residue (circled). b The replacement of Y300 with alanine allowed MeGlcA to form six hydrogen bonds. c Glucose (Glc) formed seven hydrogen bonds with GOOX-Y300ABack to article page