Δ6-protoilludene 在
strain of S. cerevisiae CEN-23 作用下,
生成 8α,13-dihydroxy-6-protoilludene
参考文献:
名称:
CYPArm2 is a CYP450 Monooxygenase with Protoilludene 13‐Hydroxylase Activity Involved in the Biosynthesis of Armillyl Orsellinate‐Type Sesquiterpenoids
Pentalenene Synthase. Analysis of Active Site Residues by Site-Directed Mutagenesis
作者:Myriam Seemann、Guangzhi Zhai、Jan-Willem de Kraker、Chiana M. Paschall、David W. Christianson、David E. Cane
DOI:10.1021/ja026058q
日期:2002.7.1
and k(cat)/K(m). By contrast, single H309 mutants gave rise to both (+)-germacrene A (7) and protoilludene (8) in addition to pentalenene (2). Mutation to glutamate of each of the three aspartate residues in the Mg(2+)-binding aspartate-rich domain, (80)DDLFD, resulted in reduction in the k(cat)/K(m) for farnesyl diphosphate and formation of varying proportions of pentalenene and (+)-germacrene A (7)
Cloning and Characterization of an Armillaria gallica cDNA Encoding Protoilludene Synthase, Which Catalyzes the First Committed Step in the Synthesis of Antimicrobial Melleolides
from cultures of the Homobasidiomycetes genus Armillaria. The initial step in the biosynthesis of all melleolides involves cyclization of the universal sesquiterpene precursor farnesyl diphosphate to produce protoilludene, a reaction catalyzed by protoilludene synthase. We achieved the partial purification of protoilludene synthase from a mycelial culture of Armillaria gallica and found that 6-protoilludene
Mushroom Hunting by Using Bioinformatics: Application of a Predictive Framework Facilitates the Selective Identification of Sesquiterpene Synthases in Basidiomycota
作者:Maureen B. Quin、Christopher M. Flynn、Grayson T. Wawrzyn、Swati Choudhary、Claudia Schmidt-Dannert
DOI:10.1002/cbic.201300349
日期:2013.12.16
Ringing up: Several putative sesquiterpenesynthases from Stereum hirsutum have been discovered through phylogenetic analyses. Clustering based on sequence conservation and shared cyclization mechanisms allows the directed isolation and characterization of 1,6‐, 1,10‐ and 1,11‐cyclizing enzymes. Three new Δ6‐protoilludene synthases are described and kinetically characterized.
Effect of Isotopically Sensitive Branching on Product Distribution for Pentalenene Synthase: Support for a Mechanism Predicted by Quantum Chemistry
作者:Liansuo Zu、Meimei Xu、Michael W. Lodewyk、David E. Cane、Reuben J. Peters、Dean J. Tantillo
DOI:10.1021/ja3043245
日期:2012.7.18
Mechanistic proposals for the carbocation cascade reaction leading to the tricyclic sesquiterpene pentalenene are assessed in light of the results of isotopically sensitive branching experiments with the H309A mutant of pentalenene synthase. These experimental results support a mechanism for pentalenene formation involving a 7-protoilludyl cation whose intermediacy was first predicted using quantum-chemical calculations.
Mechanistic Similarities of Sesquiterpene Cyclases PenA, Omp6/7, and BcBOT2 Are Unraveled by an Unnatural “FPP-Ether” Derivative
The sesquiterpene cyclases pentalenenesynthase (PenA) and two Δ6-protoilludene synthases Omp6 and Omp7 convert a FPP ether into several new tetrahydrofurano terpenoids, one of which is also formed as the main product by the sesquiterpene cyclase BcBOT2. Thus, PenA, Omp6/7, and BcBOT2 follow closely related catalytic pathways and induce similar folding of their diphosphate substrates despite low levels