Lysergic vs Methysergide
Mechanistic comparison of Lysergic Acid Diethylamide Semisynthetic derivative of ergot (Claviceps purpurea). It has complex effects on serotonergic systems including antagonism at some peripheral serotonin receptors and Methysergide based on molecular target overlap from BindingDB and ChEMBL binding affinity data.
25
Shared Targets
43%
Jaccard Similarity
39%
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
Lysergic Acid Diethylamide Semisynthetic derivative of ergot (Claviceps purpurea). It has complex effects on serotonergic systems including antagonism at some peripheral serotonin receptors
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Evidence Score
298
PubMed Studies
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Methysergide
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Evidence Score
300
PubMed Studies
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Target Overlap
Lysergic and Methysergide share 25 molecular targets based on binding affinity data from BindingDB (Kd/IC50 ≤ 10 µM) and ChEMBL. A Jaccard index of 0.431 means 43% of the combined target set is bound by both compounds. The IDF-weighted score of 0.390 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.