1
|
Yuan GY, Zhang JM, Xu YQ, Zou Y. Biosynthesis and Assembly Logic of Fungal Hybrid Terpenoid Natural Products. Chembiochem 2024:e202400387. [PMID: 38923144 DOI: 10.1002/cbic.202400387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2024] [Revised: 06/24/2024] [Accepted: 06/25/2024] [Indexed: 06/28/2024]
Abstract
In recent decades, fungi have emerged as significant sources of diverse hybrid terpenoid natural products, and their biosynthetic pathways are increasingly unveiled. This review mainly focuses on elucidating the various strategies underlying the biosynthesis and assembly logic of these compounds. These pathways combine terpenoid moieties with diverse building blocks including polyketides, nonribosomal peptides, amino acids, p-hydroxybenzoic acid, saccharides, and adenine, resulting in the formation of plenty of hybrid terpenoid natural products via C-O, C-C, or C-N bond linkages. Subsequent tailoring steps, such as oxidation, cyclization, and rearrangement, further enhance the biological diversity and structural complexity of these hybrid terpenoid natural products. Understanding these biosynthetic mechanisms holds promise for the discovery of novel hybrid terpenoid natural products from fungi, which will promote the development of potential drug candidates in the future.
Collapse
Affiliation(s)
- Guan-Yin Yuan
- College of Pharmaceutical Sciences, Southwest University, Chongqing, 400715, P.R. China
| | - Jin-Mei Zhang
- College of Pharmaceutical Sciences, Southwest University, Chongqing, 400715, P.R. China
| | - Yan-Qiu Xu
- College of Pharmaceutical Sciences, Southwest University, Chongqing, 400715, P.R. China
| | - Yi Zou
- College of Pharmaceutical Sciences, Southwest University, Chongqing, 400715, P.R. China
| |
Collapse
|
2
|
Cong Z, Yin Q, Tian K, Mukoma NJ, Ouyang L, Hsiang T, Zhang L, Jiang L, Liu X. Genome Mining of Fungal Unique Trichodiene Synthase-like Sesquiterpene Synthases. J Fungi (Basel) 2024; 10:350. [PMID: 38786705 PMCID: PMC11122449 DOI: 10.3390/jof10050350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 05/05/2024] [Accepted: 05/10/2024] [Indexed: 05/25/2024] Open
Abstract
Sesquiterpenoids served as an important source for natural product drug discovery. Although genome mining approaches have revealed numerous novel sesquiterpenoids and biosynthetic enzymes, the comprehensive landscape of fungal sesquiterpene synthases (STSs) remains elusive. In this study, 123 previously reported fungal STSs were subjected to phylogenetic analysis, resulting in the identification of a fungi-specific STS family known as trichodiene synthase-like sesquiterpene synthases (TDTSs). Subsequently, the application of hidden Markov models allowed the discovery of 517 TDTSs from our in-house fungi genome library of over 400 sequenced genomes, and these TDTSs were defined into 79 families based on a sequence similarity network. Based on the novelty of protein sequences and the completeness of their biosynthetic gene clusters, 23 TDTS genes were selected for heterologous expression in Aspergillus oryzae. In total, 10 TDTSs were active and collectively produced 12 mono- and sesquiterpenes, resulting in the identification of the first chamipinene synthase, as well as the first fungi-derived cedrene, sabinene, and camphene synthases. Additionally, with the guidance of functionally characterized TDTSs, we found that TDTSs in Family 1 could produce bridged-cyclic sesquiterpenes, while those in Family 2 could synthesize spiro- and bridged-cyclic sesquiterpenes. Our research presents a new avenue for the genome mining of fungal sesquiterpenoids.
Collapse
Affiliation(s)
- Zhanren Cong
- State Key Laboratory of Bioreactor Engineering, East China University of Science of Technology, Shanghai 200237, China (N.J.M.)
| | - Qiang Yin
- State Key Laboratory of Bioreactor Engineering, East China University of Science of Technology, Shanghai 200237, China (N.J.M.)
| | - Kunhong Tian
- State Key Laboratory of Bioreactor Engineering, East China University of Science of Technology, Shanghai 200237, China (N.J.M.)
| | - Njeru Joe Mukoma
- State Key Laboratory of Bioreactor Engineering, East China University of Science of Technology, Shanghai 200237, China (N.J.M.)
| | - Liming Ouyang
- State Key Laboratory of Bioreactor Engineering, East China University of Science of Technology, Shanghai 200237, China (N.J.M.)
| | - Tom Hsiang
- School of Environmental Sciences, University of Guelph, 50 Stone Road East, Guelph, ON N1G 2W1, Canada
| | - Lixin Zhang
- State Key Laboratory of Bioreactor Engineering, East China University of Science of Technology, Shanghai 200237, China (N.J.M.)
| | - Lan Jiang
- Department of Cardiothoracic Surgery, Children’s Hospital of Nanjing Medical University, Nanjing 210093, China
| | - Xueting Liu
- State Key Laboratory of Bioreactor Engineering, East China University of Science of Technology, Shanghai 200237, China (N.J.M.)
| |
Collapse
|
3
|
Sousa TF, Vieira Reça BNP, Castro GS, da Silva IJS, Caniato FF, de Araújo Júnior MB, Yamagishi MEB, Koolen HHF, Bataglion GA, Hanada RE, da Silva GF. Trichoderma agriamazonicum sp. nov. (Hypocreaceae), a new ally in the control of phytopathogens. Microbiol Res 2023; 275:127469. [PMID: 37543005 DOI: 10.1016/j.micres.2023.127469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 07/23/2023] [Accepted: 08/01/2023] [Indexed: 08/07/2023]
Abstract
The genus Trichoderma comprises more than 500 valid species and is commonly used in agriculture for the control of plant diseases. In the present study, a Trichoderma species isolated from Scleronema micranthum (Malvaceae) has been extensively characterized and the morphological and phylogenetic data support the proposition of a new fungal species herein named Trichoderma agriamazonicum. This species inhibited the mycelial growth of all the nine phytopathogens tested both by mycoparasitism and by the production of VOCs, with a highlight for the inhibition of Corynespora cassiicola and Colletotrichum spp. The VOCs produced by T. agriamazonicum were able to control Capsicum chinense fruit rot caused by Colletotrichum scovillei and no symptoms were observed after seven days of phytopathogen inoculation. GC-MS revealed the production of mainly 6-amyl-α-pyrone, 1-octen-3-ol and 3-octanone during interaction with C. scovillei in C. chinense fruit. The HLPC-MS/MS analysis allowed us to annotate trikoningin KBII, hypocrenone C, 5-hydroxy-de-O-methyllasiodiplodin and unprecedented 7-mer peptaibols and lipopeptaibols. Comparative genomic analysis of five related Trichoderma species reveals a high number of proteins shared only with T. koningiopsis, mainly the enzymes related to oxidative stress. Regarding the CAZyme composition, T. agriamazonicum is most closely related to T. atroviride. A high protein copy number related to lignin and chitin degradation is observed for all Trichoderma spp. analyzed, while the presence of licheninase GH12 was observed only in T. agriamazonicum. Genome mining analysis identified 33 biosynthetic gene clusters (BGCs) of which 27 are new or uncharacterized, and the main BGCs are related to the production of polyketides. These results demonstrate the potential of this newly described species for agriculture and biotechnology.
Collapse
Affiliation(s)
- Thiago Fernandes Sousa
- Programa de Pós-graduação em Biotecnologia, Universidade Federal do Amazonas (UFAM), 69080-900 Manaus, Brazil; Embrapa Amazônia Ocidental, 69010-970 Manaus, Brazil
| | - Bruna Nayara Pantoja Vieira Reça
- Programa de Pós-graduação em Agricultura no Trópico Úmido (ATU), Instituto Nacional de Pesquisas da Amazônia (INPA), 69067-375 Manaus, Brazil
| | - Gleucinei Santos Castro
- Grupo de Pesquisas em Metabolômica e Espectrometria de Massas, Universidade do Estado do Amazonas (UEA), 690065-130 Manaus, Brazil
| | - Ingride Jarline Santos da Silva
- Programa de Pós-graduação em Biotecnologia, Universidade Federal do Amazonas (UFAM), 69080-900 Manaus, Brazil; Embrapa Amazônia Ocidental, 69010-970 Manaus, Brazil
| | - Fernanda Fátima Caniato
- Departamento de Ciências Fundamentais e Desenvolvimento Agrícola, Faculdade de Ciências Agrárias, Universidade Federal do Amazonas (UFAM), 69080-900 Manaus, Brazil
| | | | | | - Hector Henrique Ferreira Koolen
- Grupo de Pesquisas em Metabolômica e Espectrometria de Massas, Universidade do Estado do Amazonas (UEA), 690065-130 Manaus, Brazil
| | - Giovana Anceski Bataglion
- Departamento de Química do Instituto de Ciências Exatas, Universidade Federal do Amazonas (UFAM), 69080-900 Manaus, Brazil
| | - Rogério Eiji Hanada
- Instituto Nacional de Pesquisas da Amazônia (INPA), 69067-375 Manaus, Brazil.
| | | |
Collapse
|
4
|
Li CP, Shi ZZ, Fang ST, Song YP, Ji NY. Lipids and Terpenoids from the Deep-Sea Fungus Trichoderma lixii R22 and Their Antagonism against Two Wheat Pathogens. Molecules 2023; 28:6220. [PMID: 37687050 PMCID: PMC10488430 DOI: 10.3390/molecules28176220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 08/22/2023] [Accepted: 08/22/2023] [Indexed: 09/10/2023] Open
Abstract
Five new lipids, tricholixins A-E (1-5), and two known terpenoids, brasilane A (6) and harzianone A (7), were discovered from a deep-sea strain (R22) of the fungus Trichoderma lixii isolated from the cold seep sediments of the South China Sea. Their structures and relative configurations were identified by meticulous analysis of MS and IR as well as NMR data. The absolute configuration of 5 was ascertained by dimolybdenum-induced ECD data in particular. Compounds 1 and 2 represent the only two new butenolides from marine-derived Trichoderma, and they further add to the structural diversity of these molecules. Although 6 has been reported from a basidiomycete previously, it is the first brasilane aminoglycoside of Trichoderma origin. During the assay against wheat-pathogenic fungi, both 1 and 2 inhibited Fusarium graminearum with an MIC value of 25.0 μg/mL, and 6 suppressed Gaeumannomyces graminis with an MIC value of 12.5 μg/mL. Moreover, the three isolates also showed low toxicity to the brine shrimp Artemia salina.
Collapse
Affiliation(s)
- Chang-Peng Li
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; (C.-P.L.); (Z.-Z.S.); (S.-T.F.); (Y.-P.S.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhen-Zhen Shi
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; (C.-P.L.); (Z.-Z.S.); (S.-T.F.); (Y.-P.S.)
| | - Sheng-Tao Fang
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; (C.-P.L.); (Z.-Z.S.); (S.-T.F.); (Y.-P.S.)
| | - Yin-Ping Song
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; (C.-P.L.); (Z.-Z.S.); (S.-T.F.); (Y.-P.S.)
| | - Nai-Yun Ji
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; (C.-P.L.); (Z.-Z.S.); (S.-T.F.); (Y.-P.S.)
- University of Chinese Academy of Sciences, Beijing 100049, China
- Shandong Saline-Alkaline Land Modern Agriculture Company, Dongying 257345, China
| |
Collapse
|
5
|
Schalamun M, Schmoll M. Trichoderma - genomes and genomics as treasure troves for research towards biology, biotechnology and agriculture. FRONTIERS IN FUNGAL BIOLOGY 2022; 3:1002161. [PMID: 37746224 PMCID: PMC10512326 DOI: 10.3389/ffunb.2022.1002161] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Accepted: 08/25/2022] [Indexed: 09/26/2023]
Abstract
The genus Trichoderma is among the best studied groups of filamentous fungi, largely because of its high relevance in applications from agriculture to enzyme biosynthesis to biofuel production. However, the physiological competences of these fungi, that led to these beneficial applications are intriguing also from a scientific and ecological point of view. This review therefore summarizes recent developments in studies of fungal genomes, updates on previously started genome annotation efforts and novel discoveries as well as efforts towards bioprospecting for enzymes and bioactive compounds such as cellulases, enzymes degrading xenobiotics and metabolites with potential pharmaceutical value. Thereby insights are provided into genomes, mitochondrial genomes and genomes of mycoviruses of Trichoderma strains relevant for enzyme production, biocontrol and mycoremediation. In several cases, production of bioactive compounds could be associated with responsible genes or clusters and bioremediation capabilities could be supported or predicted using genome information. Insights into evolution of the genus Trichoderma revealed large scale horizontal gene transfer, predominantly of CAZyme genes, but also secondary metabolite clusters. Investigation of sexual development showed that Trichoderma species are competent of repeat induced point mutation (RIP) and in some cases, segmental aneuploidy was observed. Some random mutants finally gave away their crucial mutations like T. reesei QM9978 and QM9136 and the fertility defect of QM6a was traced back to its gene defect. The Trichoderma core genome was narrowed down to 7000 genes and gene clustering was investigated in the genomes of multiple species. Finally, recent developments in application of CRISPR/Cas9 in Trichoderma, cloning and expression strategies for the workhorse T. reesei as well as the use genome mining tools for bioprospecting Trichoderma are highlighted. The intriguing new findings on evolution, genomics and physiology highlight emerging trends and illustrate worthwhile perspectives in diverse fields of research with Trichoderma.
Collapse
Affiliation(s)
- Miriam Schalamun
- Center for Health and Bioresources, AIT Austrian Institute of Technology GmbH, Tulln, Austria
| | - Monika Schmoll
- Department of Microbiology and Ecosystem Science, Division of Terrestrial Ecosystem Research, University of Vienna, Vienna, Austria
| |
Collapse
|
6
|
Wang T, Yang Y, He M, Liu M, Huang JW, Min J, Chen CC, Liu Y, Zhang L, Guo RT. Structural insights into the cyclization of unusual brasilane-type sesquiterpenes. Int J Biol Macromol 2022; 209:1784-1791. [PMID: 35504416 DOI: 10.1016/j.ijbiomac.2022.04.150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 04/19/2022] [Accepted: 04/19/2022] [Indexed: 12/01/2022]
Abstract
The biosynthesis of brasilane-type sesquiterpenoids (BTSs) attracts much attention owing to their unique skeleton of 5/6 bicyclic structure that contains five Me groups. Here, the crystal structures of a BTS cyclase TaTC6 from Trichoderma atroviride FKI-3849 and its complexes with farnesyl pyrophosphate (FPP) and analogue were reported. These structural information reveal that TaTC6 exploits a hydrophobic pocket to constrain the hydrocarbon region of FPP in a "U-shape" to facilitate the initial C1-C11 bond formation after pyrophosphate ionization. Following, four carbocations of reaction intermediates were molecularly docked into the hydrophobic pocket to reveal critical residues involved in the cyclization cascade. Finally, an S239-stabilized water molecule that is 3.9 Å away from the C8 of the last allyl cation may conduct hydration to quench the reaction cascade. Mutating S239 to alanine led to ca. 40% reduction in activity compared with the wild-type enzyme. The conservation of the residues that constitute the hydrophobic pocket is also discussed. Overall, this study will give an insight into the mechanism of how the active site of STCs constrain the conformation of the flexible FPP and series allylic carbocations for the complicated-ring formation and unusual carbon rearrangement in the biosynthesis of BTSs.
Collapse
Affiliation(s)
- Ting Wang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Hongshan Laboratory, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Industrial Biotechnology, School of Life Sciences, Hubei University, Wuhan 430062, PR China
| | - Yu Yang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Hongshan Laboratory, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Industrial Biotechnology, School of Life Sciences, Hubei University, Wuhan 430062, PR China
| | - Min He
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Hongshan Laboratory, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Industrial Biotechnology, School of Life Sciences, Hubei University, Wuhan 430062, PR China
| | - Min Liu
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Hongshan Laboratory, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Industrial Biotechnology, School of Life Sciences, Hubei University, Wuhan 430062, PR China
| | - Jian-Wen Huang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Hongshan Laboratory, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Industrial Biotechnology, School of Life Sciences, Hubei University, Wuhan 430062, PR China
| | - Jian Min
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Hongshan Laboratory, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Industrial Biotechnology, School of Life Sciences, Hubei University, Wuhan 430062, PR China
| | - Chun-Chi Chen
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Hongshan Laboratory, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Industrial Biotechnology, School of Life Sciences, Hubei University, Wuhan 430062, PR China
| | - Yingle Liu
- State Key Laboratory of Virology, College of Life Sciences, Wuhan University, Wuhan 430072, PR China.
| | - Lilan Zhang
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Hongshan Laboratory, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Industrial Biotechnology, School of Life Sciences, Hubei University, Wuhan 430062, PR China..
| | - Rey-Ting Guo
- State Key Laboratory of Biocatalysis and Enzyme Engineering, Hubei Hongshan Laboratory, Hubei Collaborative Innovation Center for Green Transformation of Bio-Resources, Hubei Key Laboratory of Industrial Biotechnology, School of Life Sciences, Hubei University, Wuhan 430062, PR China..
| |
Collapse
|
7
|
|
8
|
Vicente I, Baroncelli R, Hermosa R, Monte E, Vannacci G, Sarrocco S. Role and genetic basis of specialised secondary metabolites in Trichoderma ecophysiology. FUNGAL BIOL REV 2022. [DOI: 10.1016/j.fbr.2021.12.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
|
9
|
Sarrocco S, Vicente I, Staropoli A, Vinale F. Genes Involved in the Secondary Metabolism of Trichoderma and the Biochemistry of These Compounds. Fungal Biol 2022. [DOI: 10.1007/978-3-030-91650-3_4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
10
|
Abstract
Hundreds of terpenoids have been isolated from Basidiomycota, among them are volatile mono- and sesquiterpenes with amazing sensory qualities, representing a promising alternative to essential oils from endangered plant species. Sesquiterpene synthases (STS) appear to be an abundant class of enzymes in these fungi. The basidiomycete Cerrena unicolor, a known sesquiterpene producer, was in silico screened for sesquiterpene cyclases via homology Basic Local Alignment Search Tool searches. Cyclase genes identified were cloned and heterologously expressed in Escherichia coli Bl21 using pCOLD I as the expression vector. Ten cyclases were successfully produced and purified, and their identity was confirmed using amino acid sequencing of tryptic peptides by nano-liquid chromatography-high resolution-electrospray ionization-tandem mass spectrometry. Gas chromatography/mass spectrometry analysis was applied to characterize these cyclases according to the formation of sesquiterpene hydrocarbons and oxidized terpenoids. Bioinformatic characterization and phylogenetic determination allowed for the classification of these diverse fungal enzymes. A representative single and a multi-product STS, respectively, were further analyzed for their dependency from divalent metal cations as a cofactor for the catalytic activity.
Collapse
|
11
|
Shenouda ML, Cox RJ. Molecular methods unravel the biosynthetic potential of Trichoderma species. RSC Adv 2021; 11:3622-3635. [PMID: 35424278 PMCID: PMC8694227 DOI: 10.1039/d0ra09627j] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 01/10/2021] [Indexed: 12/14/2022] Open
Abstract
Members of the genus Trichoderma are a well-established and studied group of fungi, mainly due to their efficient protein production capabilities and their biocontrol activities. Despite the immense interest in the use of different members of this species as biopesticides and biofertilizers, the study of their active metabolites and their biosynthetic gene clusters has not gained significant attention until recently. Here we review the challenges and opportunities in exploiting the full potential of Trichoderma spp. for the production of natural products and new metabolic engineering strategies used to overcome some of these challenges.
Collapse
Affiliation(s)
- Mary L Shenouda
- OCI, BMWZ, Leibniz University of Hannover Schneiderberg 38 30167 Hannover Germany
- Department of Pharmacognosy, Faculty of Pharmacy, Alexandria University 21521 Egypt
| | - Russell J Cox
- OCI, BMWZ, Leibniz University of Hannover Schneiderberg 38 30167 Hannover Germany
| |
Collapse
|
12
|
Sato H, Hashishin T, Kanazawa J, Miyamoto K, Uchiyama M. DFT Study of a Missing Piece in Brasilane-Type Structure Biosynthesis: An Unusual Skeletal Rearrangement. J Am Chem Soc 2020; 142:19830-19834. [PMID: 33124823 DOI: 10.1021/jacs.0c09616] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Brasilane-type sesquiterpenes have been known for a long time, but their biosynthetic pathways and mechanisms remain elusive. Recently, two groups independently characterized a Trichoderma terpene cyclase that produces trichobrasilenol, a brasilane-type sesquiterpene, and a plausible biosynthetic pathway was proposed based on isotopic labeling experiments. In the proposed mechanism, the characteristic brasilane-type 5/6 bicyclic skeleton is synthesized from a 5/7/3 tricyclic intermediate via a complicated concerted reaction, including six chemical events of C-C σ bond metathesis and rearrangements, ring-contraction, π bond formation, and regioselective hydroxylation. However, our density functional theory (DFT) calculations do not support this mechanism. On the basis of DFT calculations, we propose a new pathway for trichobrasilenol biosynthesis, involving a multistep carbocation cascade in which cyclopropylcarbinyl cations in equilibrium with homoallyl cations play a pivotal role. This pathway and mechanism is in good agreement with previous biosynthetic studies on brasilane-type compounds and related terpenoids, including isotope-labeling experiments and byproducts analysis.
Collapse
Affiliation(s)
- Hajime Sato
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba 260-8675, Japan.,Graduate School of Pharmaceutical Sciences, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.,Clustering of Pioneering Research (CPR), RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Takahiro Hashishin
- Graduate School of Pharmaceutical Sciences, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Junichiro Kanazawa
- Graduate School of Pharmaceutical Sciences, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Kazunori Miyamoto
- Graduate School of Pharmaceutical Sciences, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Masanobu Uchiyama
- Graduate School of Pharmaceutical Sciences, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.,Clustering of Pioneering Research (CPR), RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.,Research Initiative for Supra-Materials (RISM), Shinshu University, 3-15-1 Tokida, Ueda, Nagano 386-8567, Japan
| |
Collapse
|
13
|
Feng J, Surup F, Hauser M, Miller A, Wennrich JP, Stadler M, Cox RJ, Kuhnert E. Biosynthesis of oxygenated brasilane terpene glycosides involves a promiscuous N-acetylglucosamine transferase. Chem Commun (Camb) 2020; 56:12419-12422. [DOI: 10.1039/d0cc03950k] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The biosynthesis of brasilane glycosides in the fungus Annulohypoxylon truncatum was investigated resulting in the characterisation of a rare type of fungal N-acetylglucosamine transferase.
Collapse
Affiliation(s)
- Jin Feng
- Institute for Organic Chemistry and Centre for Biomolecular Drug Research (BMWZ)
- Leibniz University Hannover
- Hannover 30167
- Germany
| | - Frank Surup
- Department Microbial Drugs
- Helmholtz Centre for Infection Research (HZI)
- 38124 Braunschweig
- Germany
| | - Maurice Hauser
- Institute for Organic Chemistry and Centre for Biomolecular Drug Research (BMWZ)
- Leibniz University Hannover
- Hannover 30167
- Germany
| | - Anna Miller
- Institute for Organic Chemistry and Centre for Biomolecular Drug Research (BMWZ)
- Leibniz University Hannover
- Hannover 30167
- Germany
| | - Jan-Peer Wennrich
- Department Microbial Drugs
- Helmholtz Centre for Infection Research (HZI)
- 38124 Braunschweig
- Germany
| | - Marc Stadler
- Department Microbial Drugs
- Helmholtz Centre for Infection Research (HZI)
- 38124 Braunschweig
- Germany
| | - Russell J. Cox
- Institute for Organic Chemistry and Centre for Biomolecular Drug Research (BMWZ)
- Leibniz University Hannover
- Hannover 30167
- Germany
| | - Eric Kuhnert
- Institute for Organic Chemistry and Centre for Biomolecular Drug Research (BMWZ)
- Leibniz University Hannover
- Hannover 30167
- Germany
| |
Collapse
|