1
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Salari S, Lee H, Tsantrizos YS, Park J. Inhibition of human mevalonate kinase by allosteric inhibitors of farnesyl pyrophosphate synthase. FEBS Open Bio 2024; 14:1320-1339. [PMID: 38923323 PMCID: PMC11301271 DOI: 10.1002/2211-5463.13853] [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: 12/28/2023] [Revised: 05/07/2024] [Accepted: 06/14/2024] [Indexed: 06/28/2024] Open
Abstract
Mevalonate kinase is a key regulator of the mevalonate pathway, subject to feedback inhibition by the downstream metabolite farnesyl pyrophosphate. In this study, we validated the hypothesis that monophosphonate compounds mimicking farnesyl pyrophosphate can inhibit mevalonate kinase. Exploring compounds originally synthesized as allosteric inhibitors of farnesyl pyrophosphate synthase, we discovered mevalonate kinase inhibitors with nanomolar activity. Kinetic characterization of the two most potent inhibitors demonstrated Ki values of 3.1 and 22 nm. Structural comparison suggested features of these inhibitors likely responsible for their potency. Our findings introduce the first class of nanomolar inhibitors of human mevalonate kinase, opening avenues for future research. These compounds might prove useful as molecular tools to study mevalonate pathway regulation and evaluate mevalonate kinase as a potential therapeutic target.
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Affiliation(s)
- Saman Salari
- Department of BiochemistryMemorial University of NewfoundlandSt. John'sCanada
| | - Hiu‐Fung Lee
- Department of ChemistryMcGill UniversityMontrealCanada
| | | | - Jaeok Park
- Department of BiochemistryMemorial University of NewfoundlandSt. John'sCanada
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2
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Zhao Y, Yao Z, Desai V, Chen D, Shao Z. Building Synthetic Yeast Factories to Produce Fat-soluble Antioxidants. Curr Opin Biotechnol 2024; 87:103129. [PMID: 38703526 DOI: 10.1016/j.copbio.2024.103129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 03/20/2024] [Accepted: 03/21/2024] [Indexed: 05/06/2024]
Abstract
Fat-soluble antioxidants play a vital role in protecting the body against oxidative stress and damage. The rapid advancements in metabolic engineering and synthetic biology have offered a promising avenue for economically producing fat-soluble antioxidants by engineering microbial chassis. This review provides an overview of the recent progress in engineering yeast microbial factories to produce three main groups of lipophilic antioxidants: carotenoids, vitamin E, and stilbenoids. In addition to discussing the classic strategies employed to improve precursor availability and alleviate carbon flux competition, this review delves deeper into the innovative approaches focusing on enzyme engineering, product sequestration, subcellular compartmentalization, multistage fermentation, and morphology engineering. We conclude the review by highlighting the prospects of microbial engineering for lipophilic antioxidant production.
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Affiliation(s)
- Yuxin Zhao
- Department of Chemical and Biological Engineering, Iowa State University, Ames, IA, USA; NSF Engineering Research Center for Biorenewable Chemicals, Iowa State University, Ames, IA, USA; DOE Center for Advanced Bioenergy and Bioproducts Innovation, University of Illinois at Urbana-Champaign, Urbana, IL, USA.
| | - Zhanyi Yao
- Department of Chemical and Biological Engineering, Iowa State University, Ames, IA, USA; NSF Engineering Research Center for Biorenewable Chemicals, Iowa State University, Ames, IA, USA
| | - Vedika Desai
- NSF Engineering Research Center for Biorenewable Chemicals, Iowa State University, Ames, IA, USA; Molecular, Cellular, and Developmental Biology Interdepartmental Program, Iowa State University, Ames, IA, USA
| | - Dan Chen
- Department of Chemical and Biological Engineering, Iowa State University, Ames, IA, USA
| | - Zengyi Shao
- Department of Chemical and Biological Engineering, Iowa State University, Ames, IA, USA; NSF Engineering Research Center for Biorenewable Chemicals, Iowa State University, Ames, IA, USA; DOE Center for Advanced Bioenergy and Bioproducts Innovation, University of Illinois at Urbana-Champaign, Urbana, IL, USA; Molecular, Cellular, and Developmental Biology Interdepartmental Program, Iowa State University, Ames, IA, USA; Interdepartmental Microbiology Program, Iowa State University, Ames, IA, USA; Bioeconomy Institute, Iowa State University, Ames, IA, USA; The Ames Laboratory, Ames, IA, USA.
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3
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Esquirol L, Newman J, Nebl T, Scott C, Vickers C, Sainsbury F, Peat TS. Characterization of novel mevalonate kinases from the tardigrade Ramazzottius varieornatus and the psychrophilic archaeon Methanococcoides burtonii. Acta Crystallogr D Struct Biol 2024; 80:203-215. [PMID: 38411551 PMCID: PMC10910542 DOI: 10.1107/s2059798324001360] [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: 11/29/2023] [Accepted: 02/12/2024] [Indexed: 02/28/2024] Open
Abstract
Mevalonate kinase is central to the isoprenoid biosynthesis pathway. Here, high-resolution X-ray crystal structures of two mevalonate kinases are presented: a eukaryotic protein from Ramazzottius varieornatus and an archaeal protein from Methanococcoides burtonii. Both enzymes possess the highly conserved motifs of the GHMP enzyme superfamily, with notable differences between the two enzymes in the N-terminal part of the structures. Biochemical characterization of the two enzymes revealed major differences in their sensitivity to geranyl pyrophosphate and farnesyl pyrophosphate, and in their thermal stabilities. This work adds to the understanding of the structural basis of enzyme inhibition and thermostability in mevalonate kinases.
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Affiliation(s)
- Lygie Esquirol
- Environment, Commonwealth Scientific and Industrial Research Organisation, GPO Box 1700, Canberra, ACT 2601, Australia
| | - Janet Newman
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW 2052, Australia
| | - Tom Nebl
- Manufacturing, Commonwealth Scientific and Industrial Research Organisation, GPO Box 1700, Canberra, ACT 2601, Australia
| | - Colin Scott
- Environment, Commonwealth Scientific and Industrial Research Organisation, GPO Box 1700, Canberra, ACT 2601, Australia
- Advanced Engineering Biology Future Science Platform, Commonwealth Scientific and Industrial Research Organisation, GPO Box 1700, Canberra, ACT 2601, Australia
| | - Claudia Vickers
- Centre for Cell Factories and Biopolymers, Griffith Institute for Drug Discovery, Griffith University, Brisbane, QLD 4111, Australia
- Synbio Future Science Platform, Commonwealth Scientific and Industrial Research Organisation, GPO Box 1700, Canberra, ACT 2601, Australia
- Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Frank Sainsbury
- Centre for Cell Factories and Biopolymers, Griffith Institute for Drug Discovery, Griffith University, Brisbane, QLD 4111, Australia
- Synbio Future Science Platform, Commonwealth Scientific and Industrial Research Organisation, GPO Box 1700, Canberra, ACT 2601, Australia
| | - Thomas S. Peat
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW 2052, Australia
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4
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Zhou P, Li H, Lin Y, Zhou Y, Chen Y, Li Y, Li X, Yan H, Lin W, Xu B, Deng H, Qiu X. Omics analyses of Rehmannia glutinosa dedifferentiated and cambial meristematic cells reveal mechanisms of catalpol and indole alkaloid biosynthesis. BMC PLANT BIOLOGY 2023; 23:463. [PMID: 37794352 PMCID: PMC10552359 DOI: 10.1186/s12870-023-04478-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 09/19/2023] [Indexed: 10/06/2023]
Abstract
BACKGROUND Rehmannia glutinosa is a rich source of terpenoids with a high medicinal reputation. The present study compared dedifferentiated cells (DDCs) and cambial meristematic cells (CMCs) cell cultures of R. glutinosa for terpenoid (catalpol) and indole alkaloid (IA) biosynthesis. In this regard, we used widely targeted metabolomics and transcriptome sequencing approaches together with the comparison of cell morphology, cell death (%), and catalpol production at different time points. RESULTS We were able to identify CMCs based on their morphology and hypersensitivity to zeocin. CMCs showed higher dry weight content and better catalpol production compared to DDCs. The metabolome analysis revealed higher concentrations of IA, terpenoids, and catalpol in CMCs compared to DDCs. The transcriptome sequencing analysis showed that a total of 27,201 genes enriched in 139 pathways were differentially expressed. The higher catalpol concentration in CMCs is related to the expression changes in genes involved in acetyl-CoA and geranyl-PP biosynthesis, which are precursors for monoterpenoid biosynthesis. Moreover, the expressions of the four primary genes involved in monoterpenoid biosynthesis (NMD, CYP76A26, UGT6, and CYP76F14), along with a squalene monooxygenase, exhibit a strong association with the distinct catalpol biosynthesis. Contrarily, expression changes in AADC, STR, and RBG genes were consistent with the IA biosynthesis. Finally, we discussed the phytohormone signaling and transcription factors in relation to observed changes in metabolome. CONCLUSIONS Overall, our study provides novel data for improving the catalpol and IA biosynthesis in R. glutinosa.
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Affiliation(s)
- Pengfei Zhou
- School of Basic Medical Science, Guangdong Medical University, Dongguan, 523808, China.
| | - Haihua Li
- School of Medicine and Health, Guangdong Innovative Technical College, Dongguan, 523946, China
| | - Yujin Lin
- School of Pharmacy, Guangdong Medical University, Dongguan, 523808, China
| | - Yujun Zhou
- School of Pharmacy, Guangdong Medical University, Dongguan, 523808, China
| | - Yinzi Chen
- School of Pharmacy, Guangdong Medical University, Dongguan, 523808, China
| | - Yiheng Li
- School of Pharmacy, Guangdong Medical University, Dongguan, 523808, China
| | - Xuan Li
- School of Pharmacy, Guangdong Medical University, Dongguan, 523808, China
| | - Hui Yan
- School of Pharmacy, Guangdong Medical University, Dongguan, 523808, China
| | - Weiming Lin
- School of Pharmacy, Guangdong Medical University, Dongguan, 523808, China
| | - Beilu Xu
- School of Pharmacy, Guangdong Medical University, Dongguan, 523808, China
| | - Huiting Deng
- School of Pharmacy, Guangdong Medical University, Dongguan, 523808, China
| | - Xiaoqi Qiu
- School of Pharmacy, Guangdong Medical University, Dongguan, 523808, China
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5
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Mukherjee M, Blair RH, Wang ZQ. Machine-learning guided elucidation of contribution of individual steps in the mevalonate pathway and construction of a yeast platform strain for terpenoid production. Metab Eng 2022; 74:139-149. [DOI: 10.1016/j.ymben.2022.10.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 10/16/2022] [Accepted: 10/23/2022] [Indexed: 11/06/2022]
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6
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Carotenoids in Drug Discovery and Medicine: Pathways and Molecular Targets Implicated in Human Diseases. Molecules 2022; 27:molecules27186005. [PMID: 36144741 PMCID: PMC9503763 DOI: 10.3390/molecules27186005] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 09/01/2022] [Accepted: 09/12/2022] [Indexed: 11/23/2022] Open
Abstract
Carotenoids are isoprenoid-derived natural products produced in plants, algae, fungi, and photosynthetic bacteria. Most animals cannot synthesize carotenoids because the biosynthetic machinery to create carotenoids de novo is absent in animals, except arthropods. Carotenoids are biosynthesized from two C20 geranylgeranyl pyrophosphate (GGPP) molecules made from isopentenyl pyrophosphate (IPP) and dimethylallyl pyrophosphate (DMAPP) via the methylerythritol 4-phosphate (MEP) route. Carotenoids can be extracted by a variety of methods, including maceration, Soxhlet extraction, supercritical fluid extraction (SFE), microwave-assisted extraction (MAE), accelerated solvent extraction (ASE), ultrasound-assisted extraction (UAE), pulsed electric field (PEF)-assisted extraction, and enzyme-assisted extraction (EAE). Carotenoids have been reported to exert various biochemical actions, including the inhibition of the Akt/mTOR, Bcl-2, SAPK/JNK, JAK/STAT, MAPK, Nrf2/Keap1, and NF-κB signaling pathways and the ability to increase cholesterol efflux to HDL. Carotenoids are absorbed in the intestine. A handful of carotenoids and carotenoid-based compounds are in clinical trials, while some are currently used as medicines. The application of metabolic engineering techniques for carotenoid production, whole-genome sequencing, and the use of plants as cell factories to produce specialty carotenoids presents a promising future for carotenoid research. In this review, we discussed the biosynthesis and extraction of carotenoids, the roles of carotenoids in human health, the metabolism of carotenoids, and carotenoids as a source of drugs and supplements.
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7
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Esquirol L, McNeale D, Douglas T, Vickers CE, Sainsbury F. Rapid Assembly and Prototyping of Biocatalytic Virus-like Particle Nanoreactors. ACS Synth Biol 2022; 11:2709-2718. [PMID: 35880829 DOI: 10.1021/acssynbio.2c00117] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Protein cages are attractive as molecular scaffolds for the fundamental study of enzymes and metabolons and for the creation of biocatalytic nanoreactors for in vitro and in vivo use. Virus-like particles (VLPs) such as those derived from the P22 bacteriophage capsid protein make versatile self-assembling protein cages and can be used to encapsulate a broad range of protein cargos. In vivo encapsulation of enzymes within VLPs requires fusion to the coat protein or a scaffold protein. However, the expression level, stability, and activity of cargo proteins can vary upon fusion. Moreover, it has been shown that molecular crowding of enzymes inside VLPs can affect their catalytic properties. Consequently, testing of numerous parameters is required for production of the most efficient nanoreactor for a given cargo enzyme. Here, we present a set of acceptor vectors that provide a quick and efficient way to build, test, and optimize cargo loading inside P22 VLPs. We prototyped the system using a yellow fluorescent protein and then applied it to mevalonate kinases (MKs), a key enzyme class in the industrially important terpene (isoprenoid) synthesis pathway. Different MKs required considerably different approaches to deliver maximal encapsulation as well as optimal kinetic parameters, demonstrating the value of being able to rapidly access a variety of encapsulation strategies. The vector system described here provides an approach to optimize cargo enzyme behavior in bespoke P22 nanoreactors. This will facilitate industrial applications as well as basic research on nanoreactor-cargo behavior.
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Affiliation(s)
- Lygie Esquirol
- Centre for Cell Factories and Biopolymers, Griffith Institute for Drug Discovery, Griffith University, Nathan, Queensland 4111, Australia.,Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, Queensland 4072, Australia
| | - Donna McNeale
- Centre for Cell Factories and Biopolymers, Griffith Institute for Drug Discovery, Griffith University, Nathan, Queensland 4111, Australia.,Synthetic Biology Future Science Platform, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Brisbane, Queensland 4102, Australia
| | - Trevor Douglas
- Department of Chemistry, Indiana University, Bloomington, Indiana 47405, United States
| | - Claudia E Vickers
- Centre for Cell Factories and Biopolymers, Griffith Institute for Drug Discovery, Griffith University, Nathan, Queensland 4111, Australia.,Synthetic Biology Future Science Platform, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Brisbane, Queensland 4102, Australia.,ARC Centre of Excellence in Synthetic Biology, Queensland University of Technology, Brisbane 4000 Australia
| | - Frank Sainsbury
- Centre for Cell Factories and Biopolymers, Griffith Institute for Drug Discovery, Griffith University, Nathan, Queensland 4111, Australia.,Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, Queensland 4072, Australia.,Synthetic Biology Future Science Platform, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Brisbane, Queensland 4102, Australia
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8
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Aoki M, Vinokur J, Motoyama K, Ishikawa R, Collazo M, Cascio D, Sawaya MR, Ito T, Bowie JU, Hemmi H. Crystal structure of mevalonate 3,5-bisphosphate decarboxylase reveals insight into the evolution of decarboxylases in the mevalonate metabolic pathways. J Biol Chem 2022; 298:102111. [PMID: 35690147 PMCID: PMC9254496 DOI: 10.1016/j.jbc.2022.102111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Revised: 06/04/2022] [Accepted: 06/06/2022] [Indexed: 11/22/2022] Open
Abstract
Mevalonate 3,5-bisphosphate decarboxylase is involved in the recently discovered Thermoplasma-type mevalonate pathway. The enzyme catalyzes the elimination of the 3-phosphate group from mevalonate 3,5-bisphosphate as well as concomitant decarboxylation of the substrate. This entire reaction of the enzyme resembles the latter half-reactions of its homologs, diphosphomevalonate decarboxylase and phosphomevalonate decarboxylase, which also catalyze ATP-dependent phosphorylation of the 3-hydroxyl group of their substrates. However, the crystal structure of mevalonate 3,5-bisphosphate decarboxylase and the structural reasons of the difference between reactions catalyzed by the enzyme and its homologs are unknown. In this study, we determined the X-ray crystal structure of mevalonate 3,5-bisphosphate decarboxylase from Picrophilus torridus, a thermoacidophilic archaeon of the order Thermoplasmatales. Structural and mutational analysis demonstrated the importance of a conserved aspartate residue for enzyme activity. In addition, although crystallization was performed in the absence of substrate or ligands, residual electron density having the shape of a fatty acid was observed at a position overlapping the ATP-binding site of the homologous enzyme, diphosphomevalonate decarboxylase. This finding is in agreement with the expected evolutionary route from phosphomevalonate decarboxylase (ATP-dependent) to mevalonate 3,5-bisphosphate decarboxylase (ATP-independent) through the loss of kinase activity. We found that the binding of geranylgeranyl diphosphate, an intermediate of the archeal isoprenoid biosynthesis pathway, evoked significant activation of mevalonate 3,5-bisphosphate decarboxylase, and several mutations at the putative geranylgeranyl diphosphate-binding site impaired this activation, suggesting the physiological importance of ligand binding as well as a possible novel regulatory system employed by the Thermoplasma-type mevalonate pathway.
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Affiliation(s)
- Mizuki Aoki
- Department of Applied Biosciences, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Nagoya, Aichi, Japan
| | - Jeffrey Vinokur
- Department of Chemistry and Biochemistry, UCLA-DOE Institute, Molecular Biology Institute, University of California Los Angeles (UCLA), Los Angeles, California, USA
| | - Kento Motoyama
- Department of Applied Biosciences, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Nagoya, Aichi, Japan
| | - Rino Ishikawa
- Department of Applied Biosciences, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Nagoya, Aichi, Japan
| | - Michael Collazo
- Departments of Biological Chemistry, UCLA-DOE Institute of Genomics and Proteomics, University of California Los Angeles (UCLA), Los Angeles, California, USA
| | - Duilio Cascio
- Departments of Biological Chemistry, UCLA-DOE Institute of Genomics and Proteomics, University of California Los Angeles (UCLA), Los Angeles, California, USA
| | - Michael R Sawaya
- UCLA-DOE Institute of Genomics and Proteomics, Howard Hughes Medical Institute, University of California Los Angeles (UCLA), Los Angeles, California, USA
| | - Tomokazu Ito
- Department of Applied Biosciences, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Nagoya, Aichi, Japan
| | - James U Bowie
- Department of Chemistry and Biochemistry, UCLA-DOE Institute, Molecular Biology Institute, University of California Los Angeles (UCLA), Los Angeles, California, USA
| | - Hisashi Hemmi
- Department of Applied Biosciences, Graduate School of Bioagricultural Sciences, Nagoya University, Furo-cho, Nagoya, Aichi, Japan.
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9
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Usuda Y, Nishio Y, Nonaka G, Hara Y. Microbial Production Potential of Pantoea ananatis: From Amino Acids to Secondary Metabolites. Microorganisms 2022; 10:microorganisms10061133. [PMID: 35744651 PMCID: PMC9231021 DOI: 10.3390/microorganisms10061133] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 05/25/2022] [Accepted: 05/27/2022] [Indexed: 11/16/2022] Open
Abstract
Pantoea ananatis, a gram-negative bacterium belonging to the Erwiniaceae family, is a well-known phytopathogen isolated from many ecological niches and plant hosts. However, this bacterium also provides us with various beneficial characteristics, such as the growth promotion of their host plants and increased crop yield. Some isolated non-pathogenic strains are promising for the microbial production of useful substances. P. ananatis AJ13355 was isolated as an acidophilic bacterium and was used as an excellent host to produce L-glutamic acid under acidic conditions. The genome sequence of P. ananatis AJ13355 was determined, and specific genome-engineering technologies were developed. As a result, P. ananatis was successfully used to construct a bacterial strain that produces cysteine, a sulfur-containing amino acid that has been difficult to produce through fermentation because of complex regulation. Furthermore, by heterologous expression including plant-derived genes, construction of a strain that produces isoprenoids such as isoprene and linalool as secondary metabolites was achieved. P. ananatis is shown to be a useful host for the production of secondary metabolites, as well as amino acids, and is expected to be used as a platform for microbial production of bioactive substances, aromatic substances, and other high-value-added substances of plant origin in the future.
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Affiliation(s)
- Yoshihiro Usuda
- Research and Business Planning Department, Ajinomoto Co., Inc., Tokyo 104-8315, Japan
- Correspondence: ; Tel.: +81-70-4361-3762; Fax: +81-3-5250-8352
| | - Yousuke Nishio
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc., Kawasaki 210-8681, Japan; (Y.N.); (Y.H.)
| | - Gen Nonaka
- Ajinomoto-Genetika Research Institute, Moscow 117545, Russia;
| | - Yoshihiko Hara
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc., Kawasaki 210-8681, Japan; (Y.N.); (Y.H.)
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10
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Rinaldi MA, Ferraz CA, Scrutton NS. Alternative metabolic pathways and strategies to high-titre terpenoid production in Escherichia coli. Nat Prod Rep 2022; 39:90-118. [PMID: 34231643 PMCID: PMC8791446 DOI: 10.1039/d1np00025j] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Indexed: 12/14/2022]
Abstract
Covering: up to 2021Terpenoids are a diverse group of chemicals used in a wide range of industries. Microbial terpenoid production has the potential to displace traditional manufacturing of these compounds with renewable processes, but further titre improvements are needed to reach cost competitiveness. This review discusses strategies to increase terpenoid titres in Escherichia coli with a focus on alternative metabolic pathways. Alternative pathways can lead to improved titres by providing higher orthogonality to native metabolism that redirects carbon flux, by avoiding toxic intermediates, by bypassing highly-regulated or bottleneck steps, or by being shorter and thus more efficient and easier to manipulate. The canonical 2-C-methyl-D-erythritol 4-phosphate (MEP) and mevalonate (MVA) pathways are engineered to increase titres, sometimes using homologs from different species to address bottlenecks. Further, alternative terpenoid pathways, including additional entry points into the MEP and MVA pathways, archaeal MVA pathways, and new artificial pathways provide new tools to increase titres. Prenyl diphosphate synthases elongate terpenoid chains, and alternative homologs create orthogonal pathways and increase product diversity. Alternative sources of terpenoid synthases and modifying enzymes can also be better suited for E. coli expression. Mining the growing number of bacterial genomes for new bacterial terpenoid synthases and modifying enzymes identifies enzymes that outperform eukaryotic ones and expand microbial terpenoid production diversity. Terpenoid removal from cells is also crucial in production, and so terpenoid recovery and approaches to handle end-product toxicity increase titres. Combined, these strategies are contributing to current efforts to increase microbial terpenoid production towards commercial feasibility.
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Affiliation(s)
- Mauro A Rinaldi
- Manchester Institute of Biotechnology, Department of Chemistry, School of Natural Sciences, The University of Manchester, 131 Princess Street, Manchester, M1 7DN, UK.
| | - Clara A Ferraz
- Manchester Institute of Biotechnology, Department of Chemistry, School of Natural Sciences, The University of Manchester, 131 Princess Street, Manchester, M1 7DN, UK.
| | - Nigel S Scrutton
- Manchester Institute of Biotechnology, Department of Chemistry, School of Natural Sciences, The University of Manchester, 131 Princess Street, Manchester, M1 7DN, UK.
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11
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Trego AC, McAteer PG, Nzeteu C, Mahony T, Abram F, Ijaz UZ, O'Flaherty V. Combined Stochastic and Deterministic Processes Drive Community Assembly of Anaerobic Microbiomes During Granule Flotation. Front Microbiol 2021; 12:666584. [PMID: 34054772 PMCID: PMC8160314 DOI: 10.3389/fmicb.2021.666584] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Accepted: 04/20/2021] [Indexed: 12/01/2022] Open
Abstract
Advances in null-model approaches have resulted in a deeper understanding of community assembly mechanisms for a variety of complex microbiomes. One under-explored application is assembly of communities from the built-environment, especially during process disturbances. Anaerobic digestion for biological wastewater treatment is often underpinned by retaining millions of active granular biofilm aggregates. Flotation of granules is a major problem, resulting in process failure. Anaerobic aggregates were sampled from three identical bioreactors treating dairy wastewater. Microbiome structure was analysed using qPCR and 16S rRNA gene amplicon sequencing from DNA and cDNA. A comprehensive null-model approach quantified assembly mechanisms of floating and settled communities. Significant differences in diversity were observed between floating and settled granules, in particular, we highlight the changing abundances of Methanosaeta and Lactococcus. Both stochastic and deterministic processes were important for community assembly. Homogeneous selection was the primary mechanism for all categories, but dispersal processes also contributed. The lottery model was used to identify clade-level competition driving community assembly. Lottery “winners” were identified with different winners between floating and settled groups. Some groups changed their winner status when flotation occurred. Spirochaetaceae, for example, was only a winner in settled biomass (cDNA-level) and lost its winner status during flotation. Alternatively, Arcobacter butzerli gained winner status during flotation. This analysis provides a deeper understanding of changes that occur during process instabilities and identified groups which may be washed out—an important consideration for process control.
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Affiliation(s)
- Anna Christine Trego
- Microbial Ecology Laboratory, Microbiology, School of Natural Sciences and Ryan Institute, National University of Ireland, Galway, Ireland
| | - Paul G McAteer
- Microbial Ecology Laboratory, Microbiology, School of Natural Sciences and Ryan Institute, National University of Ireland, Galway, Ireland.,Functional Environmental Microbiology, Microbiology, School of Natural Sciences and Ryan Institute, National University of Ireland Galway, Galway, Ireland
| | - Corine Nzeteu
- Microbial Ecology Laboratory, Microbiology, School of Natural Sciences and Ryan Institute, National University of Ireland, Galway, Ireland
| | - Therese Mahony
- Microbial Ecology Laboratory, Microbiology, School of Natural Sciences and Ryan Institute, National University of Ireland, Galway, Ireland
| | - Florence Abram
- Functional Environmental Microbiology, Microbiology, School of Natural Sciences and Ryan Institute, National University of Ireland Galway, Galway, Ireland
| | - Umer Zeeshan Ijaz
- Water Engineering Group, School of Engineering, The University of Glasgow, Glasgow, United Kingdom
| | - Vincent O'Flaherty
- Microbial Ecology Laboratory, Microbiology, School of Natural Sciences and Ryan Institute, National University of Ireland, Galway, Ireland
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12
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Kirby J, Geiselman GM, Yaegashi J, Kim J, Zhuang X, Tran-Gyamfi MB, Prahl JP, Sundstrom ER, Gao Y, Munoz N, Burnum-Johnson KE, Benites VT, Baidoo EEK, Fuhrmann A, Seibel K, Webb-Robertson BJM, Zucker J, Nicora CD, Tanjore D, Magnuson JK, Skerker JM, Gladden JM. Further engineering of R. toruloides for the production of terpenes from lignocellulosic biomass. BIOTECHNOLOGY FOR BIOFUELS 2021; 14:101. [PMID: 33883010 PMCID: PMC8058980 DOI: 10.1186/s13068-021-01950-w] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Accepted: 04/07/2021] [Indexed: 05/05/2023]
Abstract
BACKGROUND Mitigation of climate change requires that new routes for the production of fuels and chemicals be as oil-independent as possible. The microbial conversion of lignocellulosic feedstocks into terpene-based biofuels and bioproducts represents one such route. This work builds upon previous demonstrations that the single-celled carotenogenic basidiomycete, Rhodosporidium toruloides, is a promising host for the production of terpenes from lignocellulosic hydrolysates. RESULTS This study focuses on the optimization of production of the monoterpene 1,8-cineole and the sesquiterpene α-bisabolene in R. toruloides. The α-bisabolene titer attained in R. toruloides was found to be proportional to the copy number of the bisabolene synthase (BIS) expression cassette, which in turn influenced the expression level of several native mevalonate pathway genes. The addition of more copies of BIS under a stronger promoter resulted in production of α-bisabolene at 2.2 g/L from lignocellulosic hydrolysate in a 2-L fermenter. Production of 1,8-cineole was found to be limited by availability of the precursor geranylgeranyl pyrophosphate (GPP) and expression of an appropriate GPP synthase increased the monoterpene titer fourfold to 143 mg/L at bench scale. Targeted mevalonate pathway metabolite analysis suggested that 3-hydroxy-3-methyl-glutaryl-coenzyme A reductase (HMGR), mevalonate kinase (MK) and phosphomevalonate kinase (PMK) may be pathway bottlenecks are were therefore selected as targets for overexpression. Expression of HMGR, MK, and PMK orthologs and growth in an optimized lignocellulosic hydrolysate medium increased the 1,8-cineole titer an additional tenfold to 1.4 g/L. Expression of the same mevalonate pathway genes did not have as large an impact on α-bisabolene production, although the final titer was higher at 2.6 g/L. Furthermore, mevalonate pathway intermediates accumulated in the mevalonate-engineered strains, suggesting room for further improvement. CONCLUSIONS This work brings R. toruloides closer to being able to make industrially relevant quantities of terpene from lignocellulosic biomass.
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Affiliation(s)
- James Kirby
- Department of Energy, Agile BioFoundry, Emeryville, CA, 94608, USA
- Department of Biomass Science and Conversion Technology, Sandia National Laboratories, Livermore, CA, 94550, USA
| | - Gina M Geiselman
- Department of Energy, Agile BioFoundry, Emeryville, CA, 94608, USA
- Department of Biomass Science and Conversion Technology, Sandia National Laboratories, Livermore, CA, 94550, USA
| | - Junko Yaegashi
- Joint BioEnergy Institute, Lawrence Berkeley National Laboratory, Emeryville, CA, 94608, USA
- Chemical and Biological Processing Group, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Joonhoon Kim
- Department of Energy, Agile BioFoundry, Emeryville, CA, 94608, USA
- Chemical and Biological Processing Group, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Xun Zhuang
- Department of Energy, Agile BioFoundry, Emeryville, CA, 94608, USA
- Department of Biomass Science and Conversion Technology, Sandia National Laboratories, Livermore, CA, 94550, USA
| | - Mary Bao Tran-Gyamfi
- Department of Energy, Agile BioFoundry, Emeryville, CA, 94608, USA
- Department of Biomass Science and Conversion Technology, Sandia National Laboratories, Livermore, CA, 94550, USA
| | - Jan-Philip Prahl
- Department of Energy, Agile BioFoundry, Emeryville, CA, 94608, USA
- Advanced Biofuels and Bioproducts Process Development Unit, Lawrence Berkeley National Laboratory, Emeryville, CA, 94608, USA
| | - Eric R Sundstrom
- Department of Energy, Agile BioFoundry, Emeryville, CA, 94608, USA
- Advanced Biofuels and Bioproducts Process Development Unit, Lawrence Berkeley National Laboratory, Emeryville, CA, 94608, USA
| | - Yuqian Gao
- Department of Energy, Agile BioFoundry, Emeryville, CA, 94608, USA
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Nathalie Munoz
- Department of Energy, Agile BioFoundry, Emeryville, CA, 94608, USA
- The Environmental Molecular Sciences Laboratory, Richland, WA, 99354, USA
| | - Kristin E Burnum-Johnson
- Department of Energy, Agile BioFoundry, Emeryville, CA, 94608, USA
- The Environmental Molecular Sciences Laboratory, Richland, WA, 99354, USA
| | - Veronica T Benites
- Department of Energy, Agile BioFoundry, Emeryville, CA, 94608, USA
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Edward E K Baidoo
- Department of Energy, Agile BioFoundry, Emeryville, CA, 94608, USA
- Biological Systems and Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Anna Fuhrmann
- Joint BioEnergy Institute, Lawrence Berkeley National Laboratory, Emeryville, CA, 94608, USA
| | - Katharina Seibel
- Joint BioEnergy Institute, Lawrence Berkeley National Laboratory, Emeryville, CA, 94608, USA
| | - Bobbie-Jo M Webb-Robertson
- Department of Energy, Agile BioFoundry, Emeryville, CA, 94608, USA
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Jeremy Zucker
- Department of Energy, Agile BioFoundry, Emeryville, CA, 94608, USA
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Carrie D Nicora
- Department of Energy, Agile BioFoundry, Emeryville, CA, 94608, USA
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Deepti Tanjore
- Department of Energy, Agile BioFoundry, Emeryville, CA, 94608, USA
- Advanced Biofuels and Bioproducts Process Development Unit, Lawrence Berkeley National Laboratory, Emeryville, CA, 94608, USA
| | - Jon K Magnuson
- Department of Energy, Agile BioFoundry, Emeryville, CA, 94608, USA
- Chemical and Biological Processing Group, Pacific Northwest National Laboratory, Richland, WA, 99354, USA
| | - Jeffrey M Skerker
- Environmental Genomics and Systems Biology Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
- QB3-Berkeley, University of California, Berkeley, CA, 94704, USA
| | - John M Gladden
- Department of Energy, Agile BioFoundry, Emeryville, CA, 94608, USA.
- Department of Biomass Science and Conversion Technology, Sandia National Laboratories, Livermore, CA, 94550, USA.
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Anaerobic Production of Isoprene by Engineered Methanosarcina Species Archaea. Appl Environ Microbiol 2021; 87:AEM.02417-20. [PMID: 33452028 DOI: 10.1128/aem.02417-20] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Accepted: 12/25/2020] [Indexed: 01/14/2023] Open
Abstract
Isoprene is a valuable petrochemical used for a wide variety of consumer goods, such as adhesives and synthetic rubber. We were able to achieve a high yield of renewable isoprene by taking advantage of the naturally high-flux mevalonate lipid synthesis pathway in anaerobic methane-producing archaea (methanogens). Our study illustrates that by genetically manipulating Methanosarcina species methanogens, it is possible to create organisms that grow by producing the hemiterpene isoprene. Mass balance measurements show that engineered methanogens direct up to 4% of total carbon flux to isoprene, demonstrating that methanogens produce higher isoprene yields than engineered yeast, bacteria, or cyanobacteria, and from inexpensive feedstocks. Expression of isoprene synthase resulted in increased biomass and changes in gene expression that indicate that isoprene synthesis depletes membrane precursors and redirects electron flux, enabling isoprene to be a major metabolic product. Our results demonstrate that methanogens are a promising engineering chassis for renewable isoprene synthesis.IMPORTANCE A significant barrier to implementing renewable chemical technologies is high production costs relative to those for petroleum-derived products. Existing technologies using engineered organisms have difficulty competing with petroleum-derived chemicals due to the cost of feedstocks (such as glucose), product extraction, and purification. The hemiterpene monomer isoprene is one such chemical that cannot currently be produced using cost-competitive renewable biotechnologies. To reduce the cost of renewable isoprene, we have engineered methanogens to synthesize it from inexpensive feedstocks such as methane, methanol, acetate, and carbon dioxide. The "isoprenogen" strains we developed have potential to be used for industrial production of inexpensive renewable isoprene.
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14
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Hoshino Y, Moriya M, Matsudaira A, Katashkina JI, Nitta N, Nishio Y, Usuda Y. Stereospecific linalool production utilizing two-phase cultivation system in Pantoea ananatis. J Biotechnol 2020; 324:21-27. [PMID: 32980368 DOI: 10.1016/j.jbiotec.2020.09.021] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 09/07/2020] [Accepted: 09/22/2020] [Indexed: 11/18/2022]
Abstract
Linalool is a monoterpene alcohol, which imparts floral scents to a variety of plants and is extensively used in various kinds of products, such as processed foods and beverages for fragrances and flavors. However, linalool from natural resources is racemate, and production of linalool enantiomers is difficult. To produce stereospecific linalool, we evaluated linalool synthase genes (LINS) from plants, such as Actinidia arguta (AaLINS) and Coriandrum sativum (CsLINS) for (S)-specific LINS and a gram-positive bacterium Streptomyces clavuligerus (ScLINS) for (R)-specific LINS, with Pantoea ananatis strain as the host. Among the 16 LINS examined, AaLINS and ScLINS showed the best (S)-linalool production and (R)-linalool production, respectively, with 100 % enantio excess. Co-expression of the mutated farnesyl diphosphate synthase gene, ispA* (S80 F), from Escherichia coli along with the LINS genes also improved linalool production. In order to prevent volatilization and cell toxicity of linalool, two-phase cultivation with isopropyl myristate was done, which had positive effects on linalool production. The carbon flux to the MVA pathway from glucose was increased by inactivating a membrane-bound glucose dehydrogenase. Overall, 5.60 g/L (S)-linalool and 3.71 g/L (R)-linalool were produced from 60.0 g/L glucose by introduction of AaLINS-ispA* and ScLINS-ispA* in P. ananatis, respectively.
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Affiliation(s)
- Yasushi Hoshino
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc. 1-1, Suzuki-cho, Kawasaki-ku, Kawasaki, 210-8681, Japan.
| | - Mika Moriya
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc. 1-1, Suzuki-cho, Kawasaki-ku, Kawasaki, 210-8681, Japan.
| | - Akiko Matsudaira
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc. 1-1, Suzuki-cho, Kawasaki-ku, Kawasaki, 210-8681, Japan.
| | - Joanna I Katashkina
- Ajinomoto-Genetika Research Institute, 1st Dorozhny pr. 1-1, Moscow, 117545, Russian Federation.
| | - Nobuhisa Nitta
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc. 1-1, Suzuki-cho, Kawasaki-ku, Kawasaki, 210-8681, Japan.
| | - Yousuke Nishio
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc. 1-1, Suzuki-cho, Kawasaki-ku, Kawasaki, 210-8681, Japan
| | - Yoshihiro Usuda
- Research Institute for Bioscience Products & Fine Chemicals, Ajinomoto Co., Inc. 1-1, Suzuki-cho, Kawasaki-ku, Kawasaki, 210-8681, Japan.
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15
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Chen X, Zhang C, Lindley ND. Metabolic Engineering Strategies for Sustainable Terpenoid Flavor and Fragrance Synthesis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:10252-10264. [PMID: 31865696 DOI: 10.1021/acs.jafc.9b06203] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Terpenoids derived from plant material are widely applied in the flavor and fragrance industry. Traditional extraction methods are unsustainable, but microbial synthesis offers a promising solution to attain efficient production of natural-identical terpenoids. Overproduction of terpenoids in microbes requires careful balancing of the synthesis pathway constituents within the constraints of host cell metabolism. Advances in metabolic engineering have greatly facilitated overcoming the challenges of achieving high titers, rates, and yields (TRYs). The review summarizes recent development in the molecular biology toolbox to achieve high TRYs for terpenoid biosynthesis, mainly in the two industrial platform microorganisms: Escherichia coli and Saccharomyces cerevisiae. The biosynthetic pathways, including alternative pathway designs, are briefly introduced, followed by recently developed methodologies used for pathway, genome, and strain optimization. Integrated applications of these tools are important to achieve high "TRYs" of terpenoid production and pave the way for translating laboratory research into successful commercial manufacturing.
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Affiliation(s)
- Xixian Chen
- Biotransformation Innovation Platform, Agency for Science, Technology and Research (A*STAR), 61 Biopolis Drive, Singapore 138673
| | - Congqiang Zhang
- Biotransformation Innovation Platform, Agency for Science, Technology and Research (A*STAR), 61 Biopolis Drive, Singapore 138673
| | - Nicholas D Lindley
- Biotransformation Innovation Platform, Agency for Science, Technology and Research (A*STAR), 61 Biopolis Drive, Singapore 138673
- TBI, Université de Toulouse, CNRS, INRA, INSA,31077 Toulouse, France
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16
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Li C, Swofford CA, Sinskey AJ. Modular engineering for microbial production of carotenoids. Metab Eng Commun 2020; 10:e00118. [PMID: 31908924 PMCID: PMC6938962 DOI: 10.1016/j.mec.2019.e00118] [Citation(s) in RCA: 61] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 12/02/2019] [Accepted: 12/08/2019] [Indexed: 12/12/2022] Open
Abstract
There is an increasing demand for carotenoids due to their applications in the food, flavor, pharmaceutical and feed industries, however, the extraction and synthesis of these compounds can be expensive and technically challenging. Microbial production of carotenoids provides an attractive alternative to the negative environmental impacts and cost of chemical synthesis or direct extraction from plants. Metabolic engineering and synthetic biology approaches have been widely utilized to reconstruct and optimize pathways for carotenoid overproduction in microorganisms. This review summarizes the current advances in microbial engineering for carotenoid production and divides the carotenoid biosynthesis building blocks into four distinct metabolic modules: 1) central carbon metabolism, 2) cofactor metabolism, 3) isoprene supplement metabolism and 4) carotenoid biosynthesis. These four modules focus on redirecting carbon flux and optimizing cofactor supplements for isoprene precursors needed for carotenoid synthesis. Future perspectives are also discussed to provide insights into microbial engineering principles for overproduction of carotenoids.
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Affiliation(s)
- Cheng Li
- Department of Biology, Massachusetts Institute of Technology, Boston, MA, 02139, USA
- Disruptive & Sustainable Technologies for Agricultural Precision, Singapore-MIT Alliance for Research and Technology, Singapore, 138602, Singapore
| | - Charles A. Swofford
- Department of Biology, Massachusetts Institute of Technology, Boston, MA, 02139, USA
- Disruptive & Sustainable Technologies for Agricultural Precision, Singapore-MIT Alliance for Research and Technology, Singapore, 138602, Singapore
| | - Anthony J. Sinskey
- Department of Biology, Massachusetts Institute of Technology, Boston, MA, 02139, USA
- Disruptive & Sustainable Technologies for Agricultural Precision, Singapore-MIT Alliance for Research and Technology, Singapore, 138602, Singapore
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17
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Li M, Hou F, Wu T, Jiang X, Li F, Liu H, Xian M, Zhang H. Recent advances of metabolic engineering strategies in natural isoprenoid production using cell factories. Nat Prod Rep 2020; 37:80-99. [DOI: 10.1039/c9np00016j] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
This review covers the strategies mostly developed in the last three years for microbial production of isoprenoid, classified according to the engineering targets.
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Affiliation(s)
- Meijie Li
- Key Laboratory of Biobased Materials
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao 266101
- P. R. China
| | - Feifei Hou
- Key Laboratory of Biobased Materials
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao 266101
- P. R. China
| | - Tong Wu
- Key Laboratory of Biobased Materials
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao 266101
- P. R. China
| | - Xinglin Jiang
- The Novo Nordisk Foundation Center for Biosustainability
- Technical University of Denmark
- Lyngby
- Denmark
| | - Fuli Li
- Key Laboratory of Biobased Materials
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao 266101
- P. R. China
| | - Haobao Liu
- Ministry of Agriculture Key Laboratory for Tobacco Biology and Processing
- Tobacco Research Institute
- Chinese Academy of Agricultural Sciences
- Qingdao
- P. R. China
| | - Mo Xian
- Key Laboratory of Biobased Materials
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao 266101
- P. R. China
| | - Haibo Zhang
- Key Laboratory of Biobased Materials
- Qingdao Institute of Bioenergy and Bioprocess Technology
- Chinese Academy of Sciences
- Qingdao 266101
- P. R. China
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18
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Katashkina JI, Kazieva ED, Tajima Y, Mashko SV. Increased Isoprene Production by the Recombinant Pantoea ananatis Strain due to the Balanced Amplification of Mevalonate Pathway Genes. APPL BIOCHEM MICRO+ 2019. [DOI: 10.1134/s0003683819090023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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Nitta N, Tajima Y, Katashkina J, Yamamoto Y, Onuki A, Rachi H, Kazieva E, Nishio Y. Application of inorganic phosphate limitation to efficient isoprene production in
Pantoea ananatis. J Appl Microbiol 2019; 128:763-774. [DOI: 10.1111/jam.14521] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 11/08/2019] [Accepted: 11/15/2019] [Indexed: 01/11/2023]
Affiliation(s)
- N. Nitta
- Institute for Innovation Ajinomoto Co., Inc. Kawasaki Japan
| | - Y. Tajima
- Institute for Innovation Ajinomoto Co., Inc. Kawasaki Japan
| | | | - Y. Yamamoto
- Institute for Innovation Ajinomoto Co., Inc. Kawasaki Japan
| | - A. Onuki
- Institute for Innovation Ajinomoto Co., Inc. Kawasaki Japan
| | - H. Rachi
- Institute for Innovation Ajinomoto Co., Inc. Kawasaki Japan
| | - E. Kazieva
- Ajinomoto‐Genetika Research Institute Moscow Russia
| | - Y. Nishio
- Institute for Innovation Ajinomoto Co., Inc. Kawasaki Japan
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20
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Enhanced (−)-α-Bisabolol Productivity by Efficient Conversion of Mevalonate in Escherichia coli. Catalysts 2019. [DOI: 10.3390/catal9050432] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
(−)-α-Bisabolol, a naturally occurring sesquiterpene alcohol, has been used in pharmaceuticals and cosmetics owing to its beneficial effects on inflammation and skin healing. Previously, we reported the high production of (−)-α-bisabolol by fed-batch fermentation using engineered Escherichia coli (E. coli) expressing the exogenous mevalonate (MVA) pathway genes. The productivity of (−)-α-bisabolol must be improved before industrial application. Here, we report enhancement of initial (−)-α-bisabolol productivity to 3-fold higher than that observed in our previous study. We first harnessed a farnesyl pyrophosphate (FPP)-resistant mevalonate kinase 1 (MvaK1) from an archaeon Methanosarcina mazei (M. mazei) to create a more efficient heterologous MVA pathway that produces (−)-α-bisabolol in the engineered E. coli. The resulting strain produced 1.7-fold higher (−)-α-bisabolol relative to the strain expressing a feedback-inhibitory MvaK1 from Staphylococcus aureus (S. aureus). Next, to efficiently convert accumulated MVA to (−)-α-bisabolol, we additionally overexpressed genes involved in the lower MVA mevalonate pathway in E. coli containing the entire MVA pathway genes. (−)-α-Bisabolol production increased by 1.8-fold with reduction of MVA accumulation, relative to the control strain. Finally, we optimized the fermentation conditions including inducer concentration, aeration and enzymatic cofactor. The strain was able to produce 8.5 g/L of (−)-α-bisabolol with an initial productivity of 0.12 g/L h in the optimal fed-batch fermentation. Thus, the microbial production of (−)-α-bisabolol would be an economically viable bioprocess for its industrial application.
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21
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Metcalf KJ, Slininger Lee MF, Jakobson CM, Tullman-Ercek D. An estimate is worth about a thousand experiments: using order-of-magnitude estimates to identify cellular engineering targets. Microb Cell Fact 2018; 17:135. [PMID: 30165868 PMCID: PMC6117934 DOI: 10.1186/s12934-018-0979-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Accepted: 08/21/2018] [Indexed: 11/10/2022] Open
Abstract
Biotechnological processes use microbes to convert abundant molecules, such as glucose, into high-value products, such as pharmaceuticals, commodity and fine chemicals, and energy. However, from the outset of the development of a new bioprocess, it is difficult to determine the feasibility, expected yields, and targets for engineering. In this review, we describe a methodology that uses rough estimates to assess the feasibility of a process, approximate the expected product titer of a biological system, and identify variables to manipulate in order to achieve the desired performance. This methodology uses estimates from literature and biological intuition, and can be applied in the early stages of a project to help plan future engineering. We highlight recent literature examples, as well as two case studies from our own work, to demonstrate the use and power of rough estimates. Describing and predicting biological function using estimates guides the research and development phase of new bioprocesses and is a useful first step to understand and build a new microbial factory.
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Affiliation(s)
- Kevin James Metcalf
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA, 94720, USA. .,Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60208, USA.
| | - Marilyn F Slininger Lee
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA, 94720, USA.,U.S. Army Edgewood Chemical Biological Center, Gunpowder, MD, 21010, USA
| | - Christopher Matthew Jakobson
- Department of Chemical and Biomolecular Engineering, University of California, Berkeley, CA, 94720, USA.,Department of Chemical and Systems Biology, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Danielle Tullman-Ercek
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, IL, 60208, USA
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