Figure 6

Modelling of GsAS1 and GsAS2 in complex with β-amyrin.
(A) Ribbon diagram representation of GsAS1 (yellow) and GsAS2 (purple). The β-amyrin molecule (black) positioned in the active site. (B) Substrate combination model of GsAS2. (C) Substrate combination model of GsAS1. Residues interacting with β-amyrin are indicated by orange colored bonds. Different residues between GsAS1 and GsAS2 interacting with β-amyrin are indicated by green colored bonds. Residues interacting indirectly with β-amyrin are indicated by pink colored bonds. The hydrogen bonds are shown as dashed lines.