ArticleChembiochem : a European journal of chemical biology2026
Specific and Multi-Product Clade I and Clade IV Sesquiterpene Synthases Contribute to the Psilocybe cubensis Volatilome.
Article in Chembiochem : a European journal of chemical biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Apart from the psychedelic psilocybin, the metabolite spectrum of Psilocybe "magic mushrooms" comprises sesquiterpenes, a class of natural products known to exhibit receptor-modulating bioactivities. However, the composition of the sesquiterpene profile has largely remained an open question. Here, we report the characterization of five Psilocybe cubensis sesquiterpene synthases, both in vitro using recombinantly produced enzymes and in vivo in Aspergillus niger. CubF is a clade I α-muurolol synthase. The investigated clade IV synthases were the near-identical CubG1 and CubG2 synthases, which catalyze mainly epi-isozizaene and β-duprezianene formation. Furthermore, CubH and CubI were identified as primarily making dauca-4(11),8-diene and β-barbatene, respectively. Gas chromatographic analyses of the headspaces of P. cubensis vegetative mycelium and fruiting bodies showed qualitative and quantitative differences, with sterpurene being among the major compounds in mycelium and dauca-4(11),8-diene in fruiting bodies. This fundamental knowledge of the P. cubensis terpenome may help distinguish the pharmacological effects of magic mushrooms versus pure psilocybin.
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