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Figure 3
(a) Stereo figure showing the galactose-binding site I of the ML-I B-chain. Residues forming the sugar-binding pocket are indicated in blue in ball-and-stick mode and Trp38B providing the hydrophobic stack is shown in green. The galactose is superimposed on the electron density and is shown in red. Hydrogen bonds are shown as black dashed lines. Solvent water molecules are indicated as light blue circles. (b) As in (a) for the galactose-binding site I of ML-I in complex with lactose. All resides involved in hydrogen bonding of lactose and those indirectly stabilizing the complex are shown in blue, lactose is shown in red and the aromatic residue building the top part is in green. Hydrogen bonds are shown as black dashed lines. Solvent waters are indicated as light blue circles.

Journal logoSTRUCTURAL BIOLOGY
COMMUNICATIONS
ISSN: 2053-230X
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