Emodin vs Quercetin
Mechanistic comparison of Emodin Purgative anthraquinone found in several plants and Quercetin based on molecular target overlap from BindingDB and ChEMBL binding affinity data.
49
Shared Targets
22%
Jaccard Similarity
17%
IDF-Weighted Similarity
Jaccard measures raw target overlap. IDF-weighted downweights promiscuous hub targets (e.g. CYP enzymes) that bind many compounds non-specifically.
Evidence Comparison
Target Overlap
Emodin and Quercetin share 49 molecular targets based on binding affinity data from BindingDB (Kd/IC50 ≤ 10 µM) and ChEMBL. A Jaccard index of 0.217 means 22% of the combined target set is bound by both compounds. The IDF-weighted score of 0.172 accounts for non-specific binding to metabolic enzymes.
Note: High target overlap does not imply identical mechanism or therapeutic equivalence. Binding affinity, tissue distribution, bioavailability, and downstream signaling differ significantly between compounds even when they bind the same protein.