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Protein-substrate interactions. Schematic representation of the protein-substrate interactions in melibiose and raffinose complexes. Dashed lines represent hydrogen bonds, and lines around Trp-37, Phe-235, and the disulfide bond Cys-121 to Cys-151 represent hydrophobic interactions. High ordered waters are represented here as black dots. (Schemes were drawn with ChemDraw (CambridgeSoft).)
