Fig. 3From: Enhanced production of amyrin in Yarrowia lipolytica using a combinatorial protein and metabolic engineering approachClose-up perspective of the predicted CrMAS substrate binding cluster, Site 1, visualized using PyMOL. A 2-D representation of the substrate access tunnel, of wild-type CrMAS. Hydrophobic amino acids in green, polar amino acids in blue, positively charged amino acids in purple, negatively charged amino acid residues in red. 3-D models of the substrate access tunnel of B wild-type CrMAS, C mutated CrMAS, and D superimposed of both. Site-directed mutagenesis were performed to change the eight target amino acids to alanine, as indicated in pink. Molecular structure of 2,3-oxidosqualene is displayed in cyanBack to article page