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Binding mode of quercetin and apoptosis-related targets. (A) Z-DEVD-FMK with caspase 3; (B) quercetin with caspase 3; (C) ABT-199 with Bcl-2; (D) quercetin with Bcl-2; (E) peptide V5 with Bax; (F) quercetin with Bax. Molecules are represented by a ball-and-stick model, and the hydrogen bonds are represented by a dotted line, and the distance is in angstroms. Atoms C, O, and N are green, red, and blue in color, respectively.
