Structural and Functional Analysis of Bacillus subtilis YisP Reveals a Role of Its Product in Biofilm Production
摘要:
YisP is involved in biofilm formation in Bacillus subtilis and has been predicted to produce C30 isoprenoids. We determined the structure of YisP and observed that it adopts the same fold as squalene and dehydrosqualene synthases. However, the first aspartate-rich motif found in essentially all isoprenoid synthases is aspartate poor in YisP and cannot catalyze head-to-head condensation reactions. We find that YisP acts as a phosphatase, catalyzing formation of farnesol from farnesyl diphosphate, and that it is the first phosphatase to adopt the fold seen in the head-to-head prenyl synthases. Farnesol restores biofilm formation in a Delta yisp mutant and modifies lipid membrane structure similarly to the virulence factor staphyloxanthin. This work clarifies the role of YisP in biofilm formation and suggests an intriguing possibility that many of the YisP-like homologs found in other bacteria may also have interesting products and functions.
Sesquiterpene Synthases Cop4 and Cop6 from Coprinus cinereus: Catalytic Promiscuity and Cyclization of Farnesyl Pyrophosphate Geometric Isomers
作者:Fernando Lopez-Gallego、Sean A. Agger、Daniel Abate-Pella、Mark D. Distefano、Claudia Schmidt-Dannert
DOI:10.1002/cbic.200900671
日期:——
Cyclization of FPP: Two new fungal sesquiterpene synthase are described that have opposite catalytic fidelities in the cyclization of farnesyl diphosphate. Catalytic promiscuity can be drastically reduced by changing the conditions of the reaction. Conversion of the FPP geometricisomers was found to proceed via opposite enantiomers of a cyclic carbocation intermediate that are rearranged to different
Mechanistic Investigations of Two Bacterial Diterpene Cyclases: Spiroviolene Synthase and Tsukubadiene Synthase
作者:Patrick Rabe、Jan Rinkel、Etilia Dolja、Thomas Schmitz、Britta Nubbemeyer、T. Hoang Luu、Jeroen S. Dickschat
DOI:10.1002/anie.201612439
日期:2017.3.1
two diterpene cyclases from streptomycetes—one with an unknown product that was identified as the spirocyclic hydrocarbon spiroviolene and one with the known product tsukubadiene—were investigated in detail by isotope labeling experiments. Although the structures of the products were very different, the cyclization mechanisms of both enzymes proceed through the same initial cyclizationreactions, before
Two Diterpene Synthases from
<i>Chryseobacterium</i>
: Chryseodiene Synthase and Wanjudiene Synthase
作者:Lukas Lauterbach、Bernd Goldfuss、Jeroen S. Dickschat
DOI:10.1002/anie.202004691
日期:2020.7.13
Twobacterialditerpenesynthases (DTSs) from Chryseobacterium were characterised. The first enzyme yielded the new compound chryseodiene that closely resembles the known fusicoccane diterpenes from fungi, but its experimentally and computationally studied cyclisation mechanism is fundamentally different to the mechanism of fusicoccadiene synthase. The second enzyme produced wanjudiene, a diterpene
作者:Philipp Baer、Patrick Rabe、Katrin Fischer、Christian A. Citron、Tim A. Klapschinski、Michael Groll、Jeroen S. Dickschat
DOI:10.1002/anie.201403648
日期:2014.7.14
plants, including epi‐isozizaene synthase (3KB9), aristolochenesynthase (4KUX), bornyl diphosphate synthase (1N20), limonene synthase (2ONG), 5‐epi‐aristolochenesynthase (5EAT), and taxa‐4(5),11(12)‐diene synthase (3P5R). An elaborate structure‐based mutagenesis in combination with analysis of the distinct product spectra confirmed the mechanistic models of carbocation formation and stabilization in
Substrate geometry controls the cyclization cascade in multiproduct terpene synthases from Zea mays
作者:Abith Vattekkatte、Nathalie Gatto、Tobias G. Köllner、Jörg Degenhardt、Jonathan Gershenzon、Wilhelm Boland
DOI:10.1039/c5ob00711a
日期:——
Multiproduct terpene synthases on incubation with (2Z) substrates showed enhanced enzymatic turnover with distinct preference for cyclic products than corresponding (2E) substrates.