Figure 5 - full size

Figure 5.
Figure 5. TcTS-Lactose Interactions(A) Electron density (2Fo-Fc) map, contoured at 1 σ, of the lactose binding site in the triclinic crystal form. The loop containing Gly145/Gly146 from a neighbor molecule in the crystal is also shown.(B) Electron density (2Fo-Fc) map, contoured at 1 σ, showing the lactose and DANA molecules in the ternary complex.(C) Schematic diagram showing protein-carbohydrate hydrogen bonding interactions.(D) Stacking interactions of the lactose moiety with the aromatic rings of Trp312 and Tyr119 in the ternary complex.