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Interaction between the ligand-binding pocket of the ERβ and 17β-estradiol (E2) complex (PDB ID: 3OLS) and the sugar chain of cyanidin-3-rutinoside (C3R). (a) Docking model of C3R (light red) to the ERβ and estradiol complex (gray); (b) Surface shape of the binding site and appearance of E2; (c) Overlapping E2 and C3R; the sugar chain of C3R does not fit.
