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Markus Gressler

7 papers in the library · 140 citations · publishing 2019-2026

Papers

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Specific and Multi‐Product Clade I and Clade IV Sesquiterpene Synthases Contribute to the Psilocybe cubensis Volatilome

ChemBioChem April 1, 2026 Sebastian Schober, Lisa Dorfmann, Karl Walther et al.

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...

Clade III Synthases Add Cyclic and Linear Terpenoids to the Psilocybe Metabolome

ChemBioChem May 3, 2025 Nick Zschoche, Markus Gressler, Stefan Bartram et al. 1 citation

Psilocybe “magic mushrooms” are best known for their indolethylamine psilocybin, yet they encode enzymes for a much more diverse arsenal of small and potentially bioactive molecules. Herein, four Psilocybe cubensis clade III sesquiterpene synthases, CubB‐CubE, whose genes are differently expressed in fruiting bodies compared to vegetative mycelium are reported. CubB‐CubE were functionally...

In Vitro Psilocybin Synthesis by Co‐Immobilized Enzymes

Chemistry - A European Journal April 9, 2025 Tim Schäfer, Thomas Krüger, Jakob Worbs et al. 2 citations

Abstract Advanced clinical trials investigate the Psilocybe magic mushroom natural product psilocybin as a treatment against major depressive disorder. Currently, synthetic material is used to meet the demand for legitimate pharmaceutical purposes. Here, we report an in vitro approach to biocatalytically produce psilocybin on a solid‐phase matrix charged with five covalently bound biosynthetic...

A „Magic Mushroom“ Multi‐Product Sesquiterpene Synthase

ChemBioChem August 24, 2023 Eike Schäfer, Stefan Bartram, Felix Trottmann et al. 7 citations

Abstract Psilocybe “magic mushrooms” are chemically well understood for their psychotropic tryptamines. However, the diversity of their other specialized metabolites, in particular terpenoids, has largely remained an open question. Yet, knowledge on the natural product background is critical to understand if other compounds modulate the psychotropic pharmacological effects. CubA, the single...

Genetic Survey of Psilocybe Natural Products

ChemBioChem May 18, 2022 Sebastian Dörner, Kai Rogge, Janis Fricke et al. 43 citations

Abstract Psilocybe magic mushrooms are best known for their main natural product, psilocybin, and its dephosphorylated congener, the psychedelic metabolite psilocin. Beyond tryptamines, the secondary metabolome of these fungi is poorly understood. The genomes of five species ( P. azurescens , P. cubensis , P. cyanescens , P. mexicana , and P. serbica ) were browsed to understand more profoundly...

S‐Adenosyl‐l‐Methionine Salvage Impacts Psilocybin Formation in “Magic” Mushrooms

ChemBioChem December 4, 2019 Richard Demmler, Janis Fricke, Sebastian Dörner et al. 31 citations

Abstract Psychotropic Psilocybe mushrooms biosynthesize their principal natural product psilocybin in five steps, among them a phosphotransfer and two methyltransfer reactions, which consume one equivalent of 5′‐adenosine triphosphate (ATP) and two equivalents of S ‐adenosyl‐ l ‐methionine (SAM). This short but co‐substrate‐intensive pathway requires nucleoside cofactor salvage to maintain high...

Injury‐Triggered Blueing Reactions of Psilocybe “Magic” Mushrooms

Angewandte Chemie International Edition November 14, 2019 Claudius Lenz, Jonas Wick, Daniel Braga et al. 56 citations

Abstract Upon injury, psychotropic psilocybin‐producing mushrooms instantly develop an intense blue color, the chemical basis and mode of formation of which has remained elusive. We report two enzymes from Psilocybe cubensis that carry out a two‐step cascade to prepare psilocybin for oxidative oligomerization that leads to blue products. The phosphatase PsiP removes the 4‐ O ‐phosphate group to...