Diterpene Biosynthesis in
<i>Catenulispora acidiphila</i>
: On the Mechanism of Catenul‐14‐en‐6‐ol Synthase
作者:Geng Li、Yue‐Wei Guo、Jeroen S. Dickschat
DOI:10.1002/anie.202014180
日期:2021.1.18
A new diterpene synthase from the actinomycete Catenulispora acidiphila was identified and the structures of its products were elucidated, including the absolute configurations by an enantioselective deuteration approach. The mechanism of the cationic terpene cyclisation cascade was deeply studied through the use of isotopically labelled substrates and of substrate analogues with partially blocked
A Branched Diterpene Cascade: The Mechanism of Spinodiene Synthase from<i>Saccharopolyspora spinosa</i>
作者:Jan Rinkel、Lukas Lauterbach、Jeroen S. Dickschat
DOI:10.1002/anie.201812216
日期:2019.1.8
synthase from Saccharopolyspora spinosa was found to convert geranylgeranyl diphosphate into the new natural products spinodiene A and B, accompanied by 2,7,18‐dolabellatriene. The structures and the formation mechanism of the enzyme products were investigated by extensive isotopic labelling experiments, which revealed an unusual branched isomerisation mechanism towards the neutral intermediate 2,7,18‐dolabellatriene
Mechanistic Characterization of Two Chimeric Sesterterpene Synthases from<i>Penicillium</i>
作者:Takaaki Mitsuhashi、Jan Rinkel、Masahiro Okada、Ikuro Abe、Jeroen S. Dickschat
DOI:10.1002/chem.201702766
日期:2017.7.26
The products of two bifunctional fungal sesterterpenesynthases (StTPS), with prenyl transferase (PT) and terpene synthase (TPS) domains from Penicillium, were structurally characterized and their mechanisms studied in detail by labeling experiments. A phylogenetic analysis of the TPS domains of the new and previously characterized enzymes revealed six distinct clades. Enzymes from the same clade catalyze
On the mechanism of ophiobolin F synthase and the absolute configuration of its product by isotopic labelling experiments
作者:Zhiyang Quan、Jeroen S. Dickschat
DOI:10.1039/d0ob01470b
日期:——
An ophiobolin F synthase homolog was discovered fromAspergilluscalidoustus CBS121601. The cyclisation mechanism of this terpene synthase was investigated by extensive isotopic labelling experiments and the absolute configuration of its product ophiobolin F was elucidated by enantioselective deuteration.
从Aspergillus calidoustus CBS121601中发现了 ophiobolin F 合酶同源物。通过广泛的同位素标记实验研究了该萜烯合酶的环化机制,并通过对映选择性氘化阐明了其产物蛇毒蛋白 F 的绝对构型。
Diterpene Biosynthesis in Actinomycetes: Studies on Cattleyene Synthase and Phomopsene Synthase
作者:Jan Rinkel、Simon T. Steiner、Jeroen S. Dickschat
DOI:10.1002/anie.201902950
日期:2019.7
Three diterpene synthases from actinomycetes have been studied. The first enzyme from Streptomyces cattleya produced the novel compound cattleyene. The other two enzymes from Nocardia testacea and Nocardia rhamnosiphila were identified as phomopsene synthases. The cyclisation mechanism of cattleyene synthase and the EIMS fragmentation mechanism of its product were extensively studied by incubation