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In Silico Genome-Wide Mining and Analysis of Terpene Synthase Gene Family in Hevea Brasiliensis. Biochem Genet 2022; 61:1185-1209. [DOI: 10.1007/s10528-022-10311-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2022] [Accepted: 12/09/2022] [Indexed: 12/23/2022]
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2
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Zhuo XZ, Chou SC, Li SY. Producing medium-chain-length polyhydroxyalkanoate from diverse feedstocks by deregulating unsaturated fatty acid biosynthesis in Escherichia coli. BIORESOURCE TECHNOLOGY 2022; 365:128078. [PMID: 36216288 DOI: 10.1016/j.biortech.2022.128078] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 10/01/2022] [Accepted: 10/03/2022] [Indexed: 06/16/2023]
Abstract
The fatty acid metabolism in Escherichia coli has served as a basic metabolic chassis for medium-chain-length polyhydroxyalkanoate (mcl-PHA) production. In this study, the phaG and phaC1 genes from Pseudomonas entomophila L48 were first cloned as pGRN08. E. coli BL21P (E. coli BL21(DE3) ΔptsG) containing pGRN08 was able to produce 23 ± 3 and 7 ± 0 mg/L homopolymer poly(3-hydroxydecanoate)(P(3HD)) from glucose and xylose, respectively. Next, a gene, PSEEN0908 (encoding a putative 3-hydroxyacyl-CoA ligase), from P. entomophila L48 was found to increase the performance of mcl-PHA production. The induction of the fatty acid biosynthesis repressor (FabR), a transcription regulator that represses UFA biosynthesis, in E. coli substantially increased the mcl-PHA production by an order of magnitude from both unrelated and related carbon source conversion. A mcl-PHA concentration of 179 ± 1 mg/L and a content of 5.79 ± 0.16 % were obtained, where 31 mol% was 3-hydroxyoctanoate (3HO) and 69 mol% was 3HD.
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Affiliation(s)
- Xiao-Zhen Zhuo
- Department of Chemical Engineering, National Chung Hsing University, Taichung 402, Taiwan
| | - Shu-Chiao Chou
- Department of Chemical Engineering, National Chung Hsing University, Taichung 402, Taiwan
| | - Si-Yu Li
- Department of Chemical Engineering, National Chung Hsing University, Taichung 402, Taiwan; Innovation and Development Center of Sustainable Agriculture, National Chung Hsing University, Taichung 402, Taiwan.
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He F, Ou Y, Liu J, Huang Q, Tang B, Xin F, Zhang J, Jiang M, Chen S, Yu Z. 3D Printed Biocatalytic Living Materials with Dual-Network Reinforced Bioinks. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2104820. [PMID: 34854551 DOI: 10.1002/smll.202104820] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 10/31/2021] [Indexed: 06/13/2023]
Abstract
The field of living materials seeks to harness living cells as microfactories that can construct a material itself or enhance the performance of material in some manner. While recent advances in 3D printing allow microbe manipulation to create bespoke living materials, the effective coupling of these living components in reinforced bioink designs remains a major challenge due to the difficulty in building a robust and cell-friendly microenvironment. Here, a type of dual-network bioink is reported for the 3D printing of living materials with enhanced biocatalysis capabilities, where bioinks are readily printable and provide a biocompatible environment along with desirable mechanical performance. It is demonstrated that integrating microbes into these bioinks enables the direct printing of catalytically living materials with high cell viability and maintains metabolic activity, which those living materials can be preserved and reused. Further, a bacteria-algae coculture system is fabricated for the bioremediation of chemicals, giving rise to its potential field applications.
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Affiliation(s)
- Fukun He
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Jiangsu Key Laboratory of Fine Chemicals and Functional Polymer Materials, Nanjing Tech University, Nanjing, 211816, P. R. China
| | - Yangteng Ou
- Yusuf Hamied Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, UK
| | - Ji Liu
- Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen, 518055, P. R. China
| | - Qiu Huang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Jiangsu Key Laboratory of Fine Chemicals and Functional Polymer Materials, Nanjing Tech University, Nanjing, 211816, P. R. China
| | - Bao Tang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Jiangsu Key Laboratory of Fine Chemicals and Functional Polymer Materials, Nanjing Tech University, Nanjing, 211816, P. R. China
| | - Fengxue Xin
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211816, P. R. China
| | - Jing Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Jiangsu Key Laboratory of Fine Chemicals and Functional Polymer Materials, Nanjing Tech University, Nanjing, 211816, P. R. China
| | - Min Jiang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211816, P. R. China
| | - Su Chen
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Jiangsu Key Laboratory of Fine Chemicals and Functional Polymer Materials, Nanjing Tech University, Nanjing, 211816, P. R. China
| | - Ziyi Yu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Jiangsu Key Laboratory of Fine Chemicals and Functional Polymer Materials, Nanjing Tech University, Nanjing, 211816, P. R. China
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Rajesh Banu J, Ginni G, Kavitha S, Yukesh Kannah R, Kumar V, Adish Kumar S, Gunasekaran M, Tyagi VK, Kumar G. Polyhydroxyalkanoates synthesis using acidogenic fermentative effluents. Int J Biol Macromol 2021; 193:2079-2092. [PMID: 34774601 DOI: 10.1016/j.ijbiomac.2021.11.040] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Revised: 11/02/2021] [Accepted: 11/04/2021] [Indexed: 11/29/2022]
Abstract
Polyhydroxyalkanoates (PHA) are natural polyesters synthesized by microbes which consume excess amount of carbon and less amount of nutrients. It is biodegradable in nature, and it synthesized from renewable resources. It is considered as a future polymer, which act as an attractive replacement to petrochemical based polymers. The main hindrance to the commercial application of PHA is the high manufacturing cost. This article provides an overview of different cost-effective substrates, their characteristics and composition, major strains involved in economical production of PHA and biosynthetic pathways leading to accumulation of PHA. This review also covers the operational parameters, various fermentative modes including batch, fed-batch, repeated fed-batch and continuous fed-batch systems, along with advanced feeding strategies such as single pulse carbon feeding, feed forward control, intermittent carbon feeding, feast famine conditions to observe their effects for improving PHA synthesis and associated challenges. In addition, it also presents the economic analysis and future perspectives for the commercialization of PHA production process thereby making the process sustainable and lucrative with the possibility of commercial biomanufacturing.
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Affiliation(s)
- J Rajesh Banu
- Department of Life Sciences, Central University of Tamil Nadu, Neelakudi, Thiruvarur, Tamil Nadu 610005, India
| | - G Ginni
- Department of Civil Engineering, Amrita College of Engineering and Technology, Amritagiri, Nagercoil, Tamil Nadu, 629901, India
| | - S Kavitha
- Department of Civil Engineering, Anna University Regional Campus, Tirunelveli, Tamil Nadu, 627007, India
| | - R Yukesh Kannah
- Department of Civil Engineering, Anna University Regional Campus, Tirunelveli, Tamil Nadu, 627007, India; Department of Civil Engineering, National Institute of Technology Tiruchirappalli, Tamil Nadu, 620015, India
| | - Vinod Kumar
- School of Water, Energy and Environment, Cranfield University, Cranfield MK43 0AL, United Kingdom
| | - S Adish Kumar
- Department of Civil Engineering, Anna University Regional Campus, Tirunelveli, Tamil Nadu, 627007, India
| | - M Gunasekaran
- Department of Physics, Anna University Regional Campus, Tirunelveli, Tamil Nadu, 627007, India
| | - Vinay Kumar Tyagi
- Department of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee, India
| | - Gopalakrishnan Kumar
- School of Civil and Environmental Engineering, Yonsei University, Seoul 03722, Republic of Korea; Institute of Chemistry, Bioscience and Environmental Engineering, Faculty of Science and Technology, University of Stavanger, Box 8600 Forus, 4036 Stavanger, Norway.
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Zhu Q, Cheng W, Song Y, He Q, Ju J, Li Q. Complete genome sequence of the deep South China Sea-derived Streptomyces niveus SCSIO 3406, the producer of cytotoxic and antibacterial marfuraquinocins. PLoS One 2021; 16:e0248404. [PMID: 33755698 PMCID: PMC7987185 DOI: 10.1371/journal.pone.0248404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Accepted: 02/25/2021] [Indexed: 12/01/2022] Open
Abstract
Streptomyces niveus SCSIO 3406 was isolated from a sediment sample collected from South China Sea at a depth of 3536 m. Four new sesquiterpenoid naphthoquinones, marfuraquinocins A-D, and two new geranylated phenazines, i. e. phenaziterpenes A and B, were isolated from the fermentation broth of the strain. Here, we present its genome sequence, which contains 7,990,492 bp with a G+C content of 70.46% and harbors 7088 protein-encoding genes. The genome sequence analysis revealed the presence of a 28,787 bp gene cluster encoding for 24 open reading frames including 1,3,6,8-tetrahydroxynaphthalene synthase and monooxygenase, seven phenazine biosynthesis proteins, two prenyltransferases and a squalene-hopene cyclase. These genes are known to be necessary for the biosynthesis of both marfuraquinocins and phenaziterpenes. Outside the gene cluster (and scattered around the genome), there are seven genes belonging to the methylerythritol phosphate pathway for the biosynthesis of the essential primary metabolite, isopentenyl diphosphate, as well as six geranyl diphosphate/farnesyl diphosphate synthase genes. The strain S. niveus SCSIO 3406 showed type I PKS, type III PKS and nonribosomal peptide synthetase cluster. The sequence will provide the genetic basis for better understanding of biosynthesis mechanism of the above mentioned six compounds and for the construction of improved strain for the industrial production of antimicrobial agents.
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Affiliation(s)
- Qinghua Zhu
- College of Life Science, Dezhou University, Dezhou, China
| | - Weige Cheng
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
| | - Yongxiang Song
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
| | - Qing He
- College of Life Science, Dezhou University, Dezhou, China
| | - Jianhua Ju
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- * E-mail: (QL); (JJ)
| | - Qinglian Li
- CAS Key Laboratory of Tropical Marine Bio-Resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China
- * E-mail: (QL); (JJ)
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Production of Porous Films Based on Biodegradable Polyesters by the Casting Solution Technique Using a Co-Soluble Porogen (Camphor). Polymers (Basel) 2020; 12:polym12091950. [PMID: 32872270 PMCID: PMC7565408 DOI: 10.3390/polym12091950] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 08/26/2020] [Accepted: 08/26/2020] [Indexed: 11/17/2022] Open
Abstract
Porous films have been prepared from degradable polymers-poly-3-hydroxybutyrate (PHB), poly-ε-caprolactone (PCL) and a blend of these polymers (1:3)-by adding porogen (camphor) to the polymer solution at 10%, 30% or 50% of the total mass of the polymer and porogen, and leaching it out afterwards. After the rinse, camphor content in films decreased to about 0.025%. The structure, physical/mechanical and biological properties of the films were investigated as dependent on their composition and porosity, which varied depending on the amount of camphor added. The surface of PHB films was porous, the PCL films were relatively smooth, and the PHB/PCL films had an intermediate structure. The addition of camphor increased the thickness (from 35 to 45 µm, from 40 to 80 µm and from 20 to 65 µm for PHB, PCL and PHB/PCL, respectively) and porosity (from 4.2(±3.6)% to 50.0(±12.8)%, from 6.4(±5.5)% to 54.5(±6.0)% and from 4.9(±4.8)% to 51.5(±5.8)%, respectively) of the films. The introduction (and removal) of 10% camphor into the PHB and PHB/PCL films led to an approximately twofold increase in the polar component of the free surface energy (from 5.4 ± 0.38 to 11.8 ± 1.33 and from 2.7 ± 0.13 to 5.2 ± 0.09 mN/m, respectively) but in other cases, on the contrary, a decrease in this indicator was registered. The increase of camphor addition from 0% to 50% gradually impaired mechanical properties of the films: so, Young's modulus decreased from 3.6 to 1.8 GPa, from 0.30 to 0.12 GPa and from 0.50 to 0.20 GPa for PHB, PCL and PHB/PCL, respectively. At the same time, the water vapor transmission rate considerably increased from 197.37 ± 23.62 to 934.03 ± 114.34 g/m2/d for PHB films; from 1027.99 ± 154.10 to 7014.62 ± 280.81 g/m2/d for PCL films; and from 715.47 ± 50.08 to 4239.09 ± 275.54 g/m2/d for PHB/PCL films. Results of biocompatibility testing in the culture of NIH 3T3 mouse fibroblast cells showed that for the most of experimental samples cell adhesion and proliferation were comparable or superior to the corresponding parameters on the initial nonporous films. The best results were obtained for PHB films where at Day 3 of the experiment the registered cell density for experimental samples arrived at 2.66(±0.26) × 105 cells/cm2 versus 1.29(±0.33) × 105 cells/cm2 in the control. So, the proposed method can be used to construct highly porous cell scaffolds for cellular engineering.
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Investigation of the methylerythritol 4-phosphate pathway for microbial terpenoid production through metabolic control analysis. Microb Cell Fact 2019; 18:192. [PMID: 31690314 PMCID: PMC6833178 DOI: 10.1186/s12934-019-1235-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 10/17/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Terpenoids are of high interest as chemical building blocks and pharmaceuticals. In microbes, terpenoids can be synthesized via the methylerythritol phosphate (MEP) or mevalonate (MVA) pathways. Although the MEP pathway has a higher theoretical yield, metabolic engineering has met with little success because the regulation of the pathway is poorly understood. RESULTS We applied metabolic control analysis to the MEP pathway in Escherichia coli expressing a heterologous isoprene synthase gene (ispS). The expression of ispS led to the accumulation of isopentenyl pyrophosphate (IPP)/dimethylallyl pyrophosphate (DMAPP) and severely impaired bacterial growth, but the coexpression of ispS and isopentenyl diphosphate isomerase (idi) restored normal growth and wild-type IPP/DMAPP levels. Targeted proteomics and metabolomics analysis provided a quantitative description of the pathway, which was perturbed by randomizing the ribosome binding site in the gene encoding 1-deoxyxylulose 5-phosphate synthase (Dxs). Dxs has a flux control coefficient of 0.35 (i.e., a 1% increase in Dxs activity resulted in a 0.35% increase in pathway flux) in the isoprene-producing strain and therefore exerted significant control over the flux though the MEP pathway. At higher dxs expression levels, the intracellular concentration of 2-C-methyl-D-erythritol-2,4-cyclopyrophosphate (MEcPP) increased substantially in contrast to the other MEP pathway intermediates, which were linearly dependent on the abundance of Dxs. This indicates that 4-hydroxy-3-methylbut-2-en-1-yl diphosphate synthase (IspG), which consumes MEcPP, became saturated and therefore limited the flux towards isoprene. The higher intracellular concentrations of MEcPP led to the efflux of this intermediate into the growth medium. DISCUSSION These findings show the importance of Dxs, Idi and IspG and metabolite export for metabolic engineering of the MEP pathway and will facilitate further approaches for the microbial production of valuable isoprenoids.
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Rigouin C, Lajus S, Ocando C, Borsenberger V, Nicaud JM, Marty A, Avérous L, Bordes F. Production and characterization of two medium-chain-length polydroxyalkanoates by engineered strains of Yarrowia lipolytica. Microb Cell Fact 2019; 18:99. [PMID: 31151440 PMCID: PMC6545009 DOI: 10.1186/s12934-019-1140-y] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2019] [Accepted: 05/17/2019] [Indexed: 11/24/2022] Open
Abstract
Background The oleaginous yeast Yarrowia lipolytica is an organism of choice for the tailored production of various compounds such as biofuels or biopolymers. When properly engineered, it is capable of producing medium-chain-length polyhydroxyalkanoate (mcl-PHA), a biobased and biodegradable polymer that can be used as bioplastics or biopolymers for environmental and biomedical applications. Results This study describes the bioproduction and the main properties of two different mcl-PHA polymers. We generated by metabolic engineering, strains of Y. lipolytica capable of accumulating more than 25% (g/g) of mcl-PHA polymers. Depending of the strain genetic background and the culture conditions, we produced (i) a mcl-PHA homopolymer of 3-hydroxydodecanoic acids, with a mass-average molar mass (Mw) of 316,000 g/mol, showing soft thermoplastic properties with potential applications in packaging and (ii) a mcl-PHA copolymer made of 3-hydroxyoctanoic (3HO), decanoic (3HD), dodecanoic (3HDD) and tetradecanoic (3TD) acids with a Mw of 128,000 g/mol, behaving like a thermoplastic elastomer with potential applications in biomedical material. Conclusion The ability to engineer Y. lipolytica to produce tailored PHAs together with the range of possible applications regarding their biophysical and mechanical properties opens new perspectives in the field of PHA bioproduction. Electronic supplementary material The online version of this article (10.1186/s12934-019-1140-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Coraline Rigouin
- LISBP, CNRS, INRA, INSA, Université de Toulouse, Toulouse, France
| | - Sophie Lajus
- LISBP, CNRS, INRA, INSA, Université de Toulouse, Toulouse, France
| | - Connie Ocando
- BioTeam/ICPEES-ECPM, UMR CNRS 7515, Université de Strasbourg, 25 rue Becquerel, 67087, Strasbourg Cedex 2, France
| | | | - Jean Marc Nicaud
- Micalis Institute, INRA-AgroParisTech, UMR1319, Team BIMLip: Integrative Metabolism of Microbial Lipids, Domaine de Vilvert, 78352, Jouy-en-Josas, France
| | - Alain Marty
- Carbios - Biopôle Clermont-Limagne, 3 rue Emile Duclaux, 63360, Saint-Beauzire, France
| | - Luc Avérous
- BioTeam/ICPEES-ECPM, UMR CNRS 7515, Université de Strasbourg, 25 rue Becquerel, 67087, Strasbourg Cedex 2, France
| | - Florence Bordes
- LISBP, CNRS, INRA, INSA, Université de Toulouse, Toulouse, France.
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Men X, Wang F, Chen GQ, Zhang HB, Xian M. Biosynthesis of Natural Rubber: Current State and Perspectives. Int J Mol Sci 2018; 20:E50. [PMID: 30583567 PMCID: PMC6337083 DOI: 10.3390/ijms20010050] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2018] [Revised: 12/17/2018] [Accepted: 12/19/2018] [Indexed: 12/12/2022] Open
Abstract
Natural rubber is a kind of indispensable biopolymers with great use and strategic importance in human society. However, its production relies almost exclusively on rubber-producing plants Hevea brasiliensis, which have high requirements for growth conditions, and the mechanism of natural rubber biosynthesis remains largely unknown. In the past two decades, details of the rubber chain polymerization and proteins involved in natural rubber biosynthesis have been investigated intensively. Meanwhile, omics and other advanced biotechnologies bring new insight into rubber production and development of new rubber-producing plants. This review summarizes the achievements of the past two decades in understanding the biosynthesis of natural rubber, especially the massive information obtained from the omics analyses. Possibilities of natural rubber biosynthesis in vitro or in genetically engineered microorganisms are also discussed.
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Affiliation(s)
- Xiao Men
- CAS Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, No.189 Songling Road, Laoshan District, Qingdao 266101, China.
| | - Fan Wang
- CAS Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, No.189 Songling Road, Laoshan District, Qingdao 266101, China.
- University of Chinese Academy of Sciences, Beijing 100049, China.
| | - Guo-Qiang Chen
- CAS Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, No.189 Songling Road, Laoshan District, Qingdao 266101, China.
| | - Hai-Bo Zhang
- CAS Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, No.189 Songling Road, Laoshan District, Qingdao 266101, China.
| | - Mo Xian
- CAS Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, No.189 Songling Road, Laoshan District, Qingdao 266101, China.
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Chaves JE, Melis A. Engineering isoprene synthesis in cyanobacteria. FEBS Lett 2018; 592:2059-2069. [PMID: 29689603 DOI: 10.1002/1873-3468.13052] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 03/21/2018] [Accepted: 04/05/2018] [Indexed: 11/05/2022]
Abstract
The renewable production of isoprene (Isp) hydrocarbons, to serve as fuel and synthetic chemistry feedstock, has attracted interest in the field recently. Isp (C5 H8 ) is naturally produced from sunlight, CO2 and H2 O photosynthetically in terrestrial plant chloroplasts via the terpenoid biosynthetic pathway and emitted in the atmosphere as a response to heat stress. Efforts to institute a high capacity continuous and renewable process have included heterologous expression of the Isp synthesis pathway in photosynthetic microorganisms. This review examines the premise and promise emanating from this relatively new research effort. Also examined are the metabolic engineering approaches applied in the quest of renewable Isp hydrocarbons production, the progress achieved so far, and barriers encountered along the way.
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Affiliation(s)
- Julie E Chaves
- Plant and Microbial Biology, University of California, Berkeley, CA, USA
| | - Anastasios Melis
- Plant and Microbial Biology, University of California, Berkeley, CA, USA
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Kadoya R, Matsumoto K, Takisawa K, Ooi T, Taguchi S. Enhanced production of lactate-based polyesters in Escherichia coli from a mixture of glucose and xylose by Mlc-mediated catabolite derepression. J Biosci Bioeng 2018; 125:365-370. [DOI: 10.1016/j.jbiosc.2017.11.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Revised: 11/01/2017] [Accepted: 11/06/2017] [Indexed: 10/18/2022]
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12
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Qi C, Zhao H, Li W, Li X, Xiang H, Zhang G, Liu H, Wang Q, Wang Y, Xian M, Zhang H. Production of γ-terpinene by metabolically engineered Escherichia coli using glycerol as feedstock. RSC Adv 2018; 8:30851-30859. [PMID: 35548758 PMCID: PMC9085526 DOI: 10.1039/c8ra02076k] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2018] [Accepted: 08/16/2018] [Indexed: 11/21/2022] Open
Abstract
A sustainable technology for gamma (γ)-terpinene was constructed in an engineered Escherichia coli. In-depth analysis at translation level for the engineered strain and intermediate metabolites were analyzed. The fed-batch fermentation of γ-terpinene was 275.41 mg L−1.
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13
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Biosynthesis and production of sabinene: current state and perspectives. Appl Microbiol Biotechnol 2017; 102:1535-1544. [DOI: 10.1007/s00253-017-8695-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Revised: 12/03/2017] [Accepted: 12/04/2017] [Indexed: 01/10/2023]
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Kudoh K, Hotta S, Sekine M, Fujii R, Uchida A, Kubota G, Kawano Y, Ihara M. Overexpression of endogenous 1-deoxy-d-xylulose 5-phosphate synthase (DXS) in cyanobacterium Synechocystis sp. PCC6803 accelerates protein aggregation. J Biosci Bioeng 2017; 123:590-596. [DOI: 10.1016/j.jbiosc.2017.01.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Revised: 12/29/2016] [Accepted: 01/04/2017] [Indexed: 11/28/2022]
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15
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Kadoya R, Kodama Y, Matsumoto K, Ooi T, Taguchi S. Genome-wide screening of transcription factor deletion targets in Escherichia coli for enhanced production of lactate-based polyesters. J Biosci Bioeng 2017; 123:535-539. [DOI: 10.1016/j.jbiosc.2016.12.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 12/12/2016] [Accepted: 12/15/2016] [Indexed: 01/19/2023]
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Jiménez-Díaz L, Caballero A, Pérez-Hernández N, Segura A. Microbial alkane production for jet fuel industry: motivation, state of the art and perspectives. Microb Biotechnol 2016; 10:103-124. [PMID: 27723249 PMCID: PMC5270751 DOI: 10.1111/1751-7915.12423] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2016] [Revised: 09/09/2016] [Accepted: 09/15/2016] [Indexed: 11/27/2022] Open
Abstract
Bio‐jet fuel has attracted a lot of interest in recent years and has become a focus for aircraft and engine manufacturers, oil companies, governments and researchers. Given the global concern about environmental issues and the instability of oil market, bio‐jet fuel has been identified as a promising way to reduce the greenhouse gas emissions from the aviation industry, while also promoting energy security. Although a number of bio‐jet fuel sources have been approved for manufacture, their commercialization and entry into the market is still a far way away. In this review, we provide an overview of the drivers for intensified research into bio‐jet fuel technologies, the type of chemical compounds found in bio‐jet fuel preparations and the current state of related pre‐commercial technologies. The biosynthesis of hydrocarbons is one of the most promising approaches for bio‐jet fuel production, and thus we provide a detailed analysis of recent advances in the microbial biosynthesis of hydrocarbons (with a focus on alkanes). Finally, we explore the latest developments and their implications for the future of research into bio‐jet fuel technologies.
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Affiliation(s)
- Lorena Jiménez-Díaz
- Abengoa Research, Campus Palmas Altas, C/Energía Solar, 41014, Sevilla, Spain
| | - Antonio Caballero
- Abengoa Research, Campus Palmas Altas, C/Energía Solar, 41014, Sevilla, Spain
| | | | - Ana Segura
- Abengoa Research, Campus Palmas Altas, C/Energía Solar, 41014, Sevilla, Spain.,Estación Experimental del Zaidín-CSIC, C/Profesor Albareda s/n, 18008, Granada, Spain
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González-Cabanelas D, Hammerbacher A, Raguschke B, Gershenzon J, Wright LP. Quantifying the Metabolites of the Methylerythritol 4-Phosphate (MEP) Pathway in Plants and Bacteria by Liquid Chromatography-Triple Quadrupole Mass Spectrometry. Methods Enzymol 2016; 576:225-49. [PMID: 27480689 DOI: 10.1016/bs.mie.2016.02.025] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The 2-C-methyl-d-erythritol 4-phosphate (MEP) pathway occurs in the plastids of higher plants and in most economically important prokaryotes where it is responsible for the biosynthesis of the isoprenoid building blocks, isopentenyl diphosphate and dimethylallyl diphosphate. These five-carbon compounds are the substrates for the enormous variety of terpenoid products, including many essential metabolites and substances of commercial value. Increased knowledge of the regulation of the MEP pathway is critical to understanding many aspects of plant and microbial metabolism as well as in developing biotechnological platforms for producing these commercially valuable isoprenoids. To achieve this goal, researchers must have the ability to investigate the in vivo kinetics of the pathway by accurately measuring the concentrations of MEP pathway metabolites. However, the low levels of these metabolites complicate their accurate determination without suitable internal standards. This chapter describes a sensitive method to accurately determine the concentrations of MEP pathway metabolites occurring at trace amounts in biological samples using liquid chromatography coupled to triple quadrupole mass spectrometry. In addition, simple protocols are given for producing stable isotope-labeled internal standards for these analyses.
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Affiliation(s)
| | - A Hammerbacher
- Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria, South Africa
| | - B Raguschke
- Max Planck Institute for Chemical Ecology, Jena, Germany
| | - J Gershenzon
- Max Planck Institute for Chemical Ecology, Jena, Germany.
| | - L P Wright
- Max Planck Institute for Chemical Ecology, Jena, Germany
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A novel MVA-mediated pathway for isoprene production in engineered E. coli. BMC Biotechnol 2016; 16:5. [PMID: 26786050 PMCID: PMC4719670 DOI: 10.1186/s12896-016-0236-2] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2015] [Accepted: 01/13/2016] [Indexed: 01/12/2023] Open
Abstract
Background To deal with the increasingly severe energy crisis and environmental consequences, biofuels and biochemicals generated from renewable resources could serve as a promising alternative for replacing petroleum as a source of fuel and chemicals, among which isoprene (2-methyl-1,3-butadiene) in particular is of great significance in that it is an important platform chemical, which has been used in industrial production of synthetic rubber for tires and coatings or aviation fuel. Results We firstly introduced fatty acid decarboxylase (OleTJE) from Jeotgalicoccus species into E. coli to directly convert MVA(mevalonate) into 3-methy-3-buten-1-ol. And then to transform 3-methy-3-buten-1-ol to isoprene, oleate hydratase (OhyAEM) from Elizabethkingia meningoseptica was overexpressed in E. coli. A novel biosynthetic pathway of isoprene in E. coli was established by co-expressing the heterologous mvaE gene encoding acetyl-CoA acetyltransferase/HMG-CoA reductase and mvaS gene encoding HMG-CoA synthase from Enterococcus faecalis, fatty acid decarboxylase (OleTJE) and oleate hydratase (OhyAEM). Furthermore, to enhance isoprene production, a further optimization of expression level of OleTJE, OhyAEM was carried out by using different promoters and copy numbers of plasmids. Thereafter, the fermentation process was also optimized to improve the production of isoprene. The final engineered strain, YJM33, bearing the innovative biosynthetic pathway of isoprene, was found to produce isoprene up to 2.2 mg/L and 620 mg/L under flask and fed-batch fermentation conditions, respectively. Conclusions In this study, by using metabolic engineering techniques, the novel MVA-mediated biosynthetic pathway of isoprene was successfully assembled in E. coli BL21(DE3) with the heterologous MVA upper pathway, OleTJE from Jeotgalicoccus species and OhyAEM from Elizabethkingia meningoseptica. Compared with traditional MVA pathway, the novel pathway is shortened by 3 steps. In addition, this is the first report on the reaction of converting MVA into 3-methy-3-buten-1-ol by fatty acid decarboxylase (OleTJE) from Jeotgalicoccus species. In brief, this study provided an alternative method for isoprene biosynthesis, which is largely different from the well-developed MEP pathway or MVA pathway. Electronic supplementary material The online version of this article (doi:10.1186/s12896-016-0236-2) contains supplementary material, which is available to authorized users.
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Xue D, Abdallah II, de Haan IEM, Sibbald MJJB, Quax WJ. Enhanced C30 carotenoid production in Bacillus subtilis by systematic overexpression of MEP pathway genes. Appl Microbiol Biotechnol 2015; 99:5907-15. [PMID: 25851715 PMCID: PMC4480331 DOI: 10.1007/s00253-015-6531-3] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 02/28/2015] [Accepted: 03/07/2015] [Indexed: 12/27/2022]
Abstract
Creating novel biosynthetic pathways and modulating the synthesis of important compounds are one of the hallmarks of synthetic biology. Understanding the key parameters controlling the flux of chemicals throughout a metabolic pathway is one of the challenges ahead. Isoprenoids are the most functionally and structurally diverse group of natural products from which numerous medicines and relevant fine chemicals are derived. The well-characterized and broadly used production organism Bacillus subtilis forms an ideal background for creating and studying novel synthetic routes. In comparison to other bacteria, B. subtilis emits the volatile compound isoprene, the smallest representative of isoprenoids, in high concentrations and thus represents an interesting starting point for an isoprenoid cell factory. In this study, the effect of systematic overexpression of the genes involved in the methylerythritol phosphate (MEP) pathway on isoprenoid production in B. subtilis was investigated. B. subtilis strains harboring a plasmid containing C30 carotenoid synthetic genes, crtM and crtN, were combined with pHCMC04G plasmids carrying various synthetic operons of the MEP pathway genes. The levels of produced carotenoids, diaponeurosporene and diapolycopene, were used as indication of the role of the various enzymes on the flux of the MEP pathway. It was shown that the production of carotenoids can be increased significantly by overexpressing the MEP pathway enzymes. More broadly, the strains developed in this study can be used as a starting point for various isoprenoid cell factories.
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Affiliation(s)
- Dan Xue
- Department of Pharmaceutical Biology, GRIP, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Ingy I. Abdallah
- Department of Pharmaceutical Biology, GRIP, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Ilse E. M. de Haan
- Department of Pharmaceutical Biology, GRIP, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Mark J. J. B. Sibbald
- Department of Pharmaceutical Biology, GRIP, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
| | - Wim J. Quax
- Department of Pharmaceutical Biology, GRIP, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
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Liu CL, Lv Q, Tan TW. Joint antisense RNA strategies for regulating isoprene production in Escherichia coli. RSC Adv 2015. [DOI: 10.1039/c5ra12161b] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Isoprene (C5H8) is a key chemical ingredient for the production of synthetic rubber and plastic.
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Affiliation(s)
- Chun-Li Liu
- National Energy R&D Center for Biorefinery
- Beijing Key Laboratory of Bioprocess
- College of Life Science and Technology
- Beijing University of Chemical Technology
- Beijing 100029
| | - Qiang Lv
- Beijing Institute of Microchemistry
- Beijing 100091
- P. R. China
| | - Tian-Wei Tan
- National Energy R&D Center for Biorefinery
- Beijing Key Laboratory of Bioprocess
- College of Life Science and Technology
- Beijing University of Chemical Technology
- Beijing 100029
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Berthelot K, Lecomte S, Estevez Y, Peruch F. Hevea brasiliensis REF (Hev b 1) and SRPP (Hev b 3): An overview on rubber particle proteins. Biochimie 2014; 106:1-9. [DOI: 10.1016/j.biochi.2014.07.002] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Accepted: 07/05/2014] [Indexed: 11/28/2022]
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Heider SAE, Wolf N, Hofemeier A, Peters-Wendisch P, Wendisch VF. Optimization of the IPP Precursor Supply for the Production of Lycopene, Decaprenoxanthin and Astaxanthin by Corynebacterium glutamicum. Front Bioeng Biotechnol 2014; 2:28. [PMID: 25191655 PMCID: PMC4138558 DOI: 10.3389/fbioe.2014.00028] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Accepted: 07/31/2014] [Indexed: 01/21/2023] Open
Abstract
The biotechnologically relevant bacterium Corynebacterium glutamicum, currently used for the million ton-scale production of amino acids for the food and feed industries, is pigmented due to synthesis of the rare cyclic C50 carotenoid decaprenoxanthin and its glucosides. The precursors of carotenoid biosynthesis, isopenthenyl pyrophosphate (IPP) and its isomer dimethylallyl pyrophosphate, are synthesized in this organism via the methylerythritol phosphate (MEP) or non-mevalonate pathway. Terminal pathway engineering in recombinant C. glutamicum permitted the production of various non-native C50 and C40 carotenoids. Here, the role of engineering isoprenoid precursor supply for lycopene production by C. glutamicum was characterized. Overexpression of dxs encoding the enzyme that catalyzes the first committed step of the MEP-pathway by chromosomal promoter exchange in a prophage-cured, genome-reduced C. glutamicum strain improved lycopene formation. Similarly, an increased IPP supply was achieved by chromosomal integration of two artificial operons comprising MEP pathway genes under the control of a constitutive promoter. Combined overexpression of dxs and the other six MEP pathways genes in C. glutamicum strain LYC3-MEP was not synergistic with respect to improving lycopene accumulation. Based on C. glutamicum strain LYC3-MEP, astaxanthin could be produced in the milligrams per gram cell dry weight range when the endogenous genes crtE, crtB, and crtI for conversion of geranylgeranyl pyrophosphate to lycopene were coexpressed with the genes for lycopene cyclase and β-carotene hydroxylase from Pantoea ananatis and carotene C(4) oxygenase from Brevundimonas aurantiaca.
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Affiliation(s)
- Sabine A E Heider
- Faculty of Biology and Center for Biotechnology (CeBiTec), Bielefeld University , Bielefeld , Germany
| | - Natalie Wolf
- Faculty of Biology and Center for Biotechnology (CeBiTec), Bielefeld University , Bielefeld , Germany
| | - Arne Hofemeier
- Faculty of Biology and Center for Biotechnology (CeBiTec), Bielefeld University , Bielefeld , Germany
| | - Petra Peters-Wendisch
- Faculty of Biology and Center for Biotechnology (CeBiTec), Bielefeld University , Bielefeld , Germany
| | - Volker F Wendisch
- Faculty of Biology and Center for Biotechnology (CeBiTec), Bielefeld University , Bielefeld , Germany
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Zhang H, Liu Q, Cao Y, Feng X, Zheng Y, Zou H, Liu H, Yang J, Xian M. Microbial production of sabinene--a new terpene-based precursor of advanced biofuel. Microb Cell Fact 2014; 13:20. [PMID: 24512040 PMCID: PMC3923588 DOI: 10.1186/1475-2859-13-20] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Accepted: 02/03/2014] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Sabinene, one kind of monoterpene, accumulated limitedly in natural organisms, is being explored as a potential component for the next generation of aircraft fuels. And demand for advanced fuels impels us to develop biosynthetic routes for the production of sabinene from renewable sugar. RESULTS In this study, sabinene was significantly produced by assembling a biosynthetic pathway using the methylerythritol 4-phosphate (MEP) or heterologous mevalonate (MVA) pathway combining the GPP and sabinene synthase genes in an engineered Escherichia coli strain. Subsequently, the culture medium and process conditions were optimized to enhance sabinene production with a maximum titer of 82.18 mg/L. Finally, the fed-batch fermentation of sabinene was evaluated using the optimized culture medium and process conditions, which reached a maximum concentration of 2.65 g/L with an average productivity of 0.018 g h⁻¹ g⁻¹ dry cells, and the conversion efficiency of glycerol to sabinene (gram to gram) reached 3.49%. CONCLUSIONS This is the first report of microbial synthesis of sabinene using an engineered E. coli strain with the renewable carbon source as feedstock. Therefore, a green and sustainable production strategy has been established for sabinene.
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Affiliation(s)
| | | | | | | | | | | | | | - Jianming Yang
- CAS Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, No,189 Songling Road, Qingdao, Laoshan District 266101, China.
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Cerrone F, Choudhari SK, Davis R, Cysneiros D, O’Flaherty V, Duane G, Casey E, Guzik MW, Kenny ST, Babu RP, O’Connor K. Medium chain length polyhydroxyalkanoate (mcl-PHA) production from volatile fatty acids derived from the anaerobic digestion of grass. Appl Microbiol Biotechnol 2013; 98:611-20. [DOI: 10.1007/s00253-013-5323-x] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2013] [Revised: 10/07/2013] [Accepted: 10/08/2013] [Indexed: 11/29/2022]
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Yang J, Nie Q, Ren M, Feng H, Jiang X, Zheng Y, Liu M, Zhang H, Xian M. Metabolic engineering of Escherichia coli for the biosynthesis of alpha-pinene. BIOTECHNOLOGY FOR BIOFUELS 2013; 6:60. [PMID: 23631625 PMCID: PMC3667116 DOI: 10.1186/1754-6834-6-60] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2013] [Accepted: 04/15/2013] [Indexed: 05/08/2023]
Abstract
BACKGROUND α-Pinene is an important natural product that is widely used in flavorings, fragrances, medicines, fine chemicals and high-density renewable fuels. Currently, α-Pinene used in industry is mainly produced either by tapping trees (gum turpentine) or as a byproduct of paper pulping (crude sulfate turpentine, CST). However, the extraction of it from trees is tedious and inefficient and requires substantial expenditure of natural resources. Therefore, it is necessary to seek sustainable technologies for α-pinene production. RESULTS To construct the microbial synthetic pathway of α-pinene in E. coli, we co-expressed native geranyl diphosphate synthase (IspA) from E. coli and α-pinene synthase (Pt30) from Pinus taeda, and then to increase the geranyl diphosphate (GPP) content in the cells, a suitable geranyl diphosphate synthase (GPPS2) was selected from two different origins. Furthermore, to enhance α-pinene production, a novel biosynthetic pathway of α-pinene was assembled in E. coli BL21(DE3) with the heterologous hybrid mevalonate (MVA) pathway, GPPS2 and α-pinene synthase (Pt30). The final genetic strain, YJM28, harboring the above novel biosynthetic pathway of α-pinene, accumulated α-pinene up to 5.44 mg/L and 0.97 g/L under flask and fed-batch fermentation conditions, respectively. The conversion efficiency of glucose to α-pinene (gram to gram) in the metabolically engineered strain reached 2.61%. CONCLUSIONS In this paper, by using metabolic engineering techniques, the more efficient biosynthetic pathway of α-pinene was successfully assembled in E. coli BL21(DE3) with the heterologous hybrid MVA pathway, GPPS2 and α-pinene synthase (Pt30). In addition, this is the first report on α-pinene fed-batch fermentation, and our results represent improvements over previous reports.
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Affiliation(s)
- Jianming Yang
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
| | - Qingjuan Nie
- Foreign Languages School, Qingdao Agricultural University, Qingdao, 266109, China
| | - Meng Ren
- School of Life and Science, Nanjing Agricultural University, Nanjing, 210095, China
| | - Hongru Feng
- College of Bioscience and Biotechnology, Shenyang Agricultural University, Shenyang, 110866, China
| | - Xinglin Jiang
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
| | - Yanning Zheng
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
| | - Min Liu
- College of Chemical Engineering and Technology, Wuhan University of Science and Technology, Wuhan, 430081, China
| | - Haibo Zhang
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
| | - Mo Xian
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, 266101, China
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Yang J, Xian M, Su S, Zhao G, Nie Q, Jiang X, Zheng Y, Liu W. Enhancing production of bio-isoprene using hybrid MVA pathway and isoprene synthase in E. coli. PLoS One 2012; 7:e33509. [PMID: 22558074 PMCID: PMC3338741 DOI: 10.1371/journal.pone.0033509] [Citation(s) in RCA: 114] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2011] [Accepted: 02/15/2012] [Indexed: 11/19/2022] Open
Abstract
The depleting petroleum reserve, increasingly severe energy crisis, and global climate change are reigniting enthusiasm for seeking sustainable technologies to replace petroleum as a source of fuel and chemicals. In this paper, the efficiency of the MVA pathway on isoprene production has been improved as follows: firstly, in order to increase MVA production, the source of the “upper pathway” which contains HMG-CoA synthase, acetyl-CoA acetyltransferase and HMG-CoA reductase to covert acetyl-CoA into MVA has been changed from Saccharomyces cerevisiae to Enterococcus faecalis; secondly, to further enhance the production of MVA and isoprene, a alanine 110 of the mvaS gene has been mutated to a glycine. The final genetic strain YJM25 containing the optimized MVA pathway and isoprene synthase from Populus alba can accumulate isoprene up to 6.3 g/L after 40 h of fed-batch cultivation.
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Affiliation(s)
- Jianming Yang
- Biomaterials Center, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, China
| | - Mo Xian
- Biomaterials Center, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, China
- * E-mail:
| | - Sizheng Su
- Department of Biochemistry, Beijing Risun Chemical Technologies Institute, China Risun Coal Chemicals Group Limited, Beijing, China
| | - Guang Zhao
- Biomaterials Center, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, China
| | - Qingjuan Nie
- College English Office, Foreign Languages School, Qingdao Agricultural University, Qingdao, China
| | - Xinglin Jiang
- Biomaterials Center, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, China
| | - Yanning Zheng
- Biomaterials Center, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, China
| | - Wei Liu
- Biomaterials Center, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, China
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Yang J, Zhao G, Sun Y, Zheng Y, Jiang X, Liu W, Xian M. Bio-isoprene production using exogenous MVA pathway and isoprene synthase in Escherichia coli. BIORESOURCE TECHNOLOGY 2012; 104:642-7. [PMID: 22133602 DOI: 10.1016/j.biortech.2011.10.042] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2011] [Revised: 10/10/2011] [Accepted: 10/12/2011] [Indexed: 05/21/2023]
Abstract
In this paper, an original strategy is employed to biosynthesize the isoprene by heterologously co-expressing the Saccharomyces cerevisiae MVA pathway and isoprene synthase (IspS) from Populus alba in the Escherichia coli BL21 (DE3) strain, which was screened from three different IspS enzymes. The finally genetic strain YJM13 harboring the MVA pathway and ispS(Pa) gene could accumulate isoprene up to 2.48 mg/l and 532 mg/l under the flask and fed-batch fermentation conditions, respectively, which is about three times and five times to the control strain. The result proves to be higher than that in the report documents. In this way, a potential production system for isoprene from renewable sources via the MVA pathway in E. coli has been provided.
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Affiliation(s)
- Jianming Yang
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China
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Potential for industrial products from the halophilic Archaea. J Ind Microbiol Biotechnol 2011; 38:1635-47. [PMID: 21853327 DOI: 10.1007/s10295-011-1021-9] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2011] [Accepted: 07/20/2011] [Indexed: 10/17/2022]
Abstract
The halophilic Archaea are a group of microorganisms that have not been extensively considered for biotechnological applications. This review describes some of the enzymes and products and the potential applications of this unique group of microorganisms to various industrial processes. Specifically, the characteristics of the glycosyl hydrolases, lipases and esterases, proteases, biopolymers and surfactants, as well as some miscellaneous other activities will be described.
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Biosynthesis of isoprene in Escherichia coli via methylerythritol phosphate (MEP) pathway. Appl Microbiol Biotechnol 2011; 90:1915-22. [DOI: 10.1007/s00253-011-3199-1] [Citation(s) in RCA: 102] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2010] [Accepted: 01/14/2011] [Indexed: 10/18/2022]
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30
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Boyandin AN, Kalacheva GS, Rodicheva EK, Volova TG. Synthesis of reserve polyhydroxyalkanoates by luminescent bacteria. Microbiology (Reading) 2008. [DOI: 10.1134/s0026261708030119] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Seetang-Nun Y, Sharkey TD, Suvachittanont W. Molecular cloning and characterization of two cDNAs encoding 1-deoxy-D-xylulose 5-phosphate reductoisomerase from Hevea brasiliensis. JOURNAL OF PLANT PHYSIOLOGY 2008; 165:991-1002. [PMID: 17936410 DOI: 10.1016/j.jplph.2007.06.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2007] [Revised: 06/26/2007] [Accepted: 06/26/2007] [Indexed: 05/09/2023]
Abstract
1-Deoxy-d-xylulose 5-phosphate reductoisomerase (DXR, EC: 1.1.1.267) is the second enzyme in the 2C-methyl-d-erythritol 4-phosphate (MEP) pathway, one of the two pathways in plants that can produce isoprenoids. The MEP pathway is the source of isoprene emitted from leaves, but rubber production is believed to result primarily from the mevalonic acid (MVA) pathway. Two cDNAs for DXR designated HbDXR1 and HbDXR2 were isolated from leaves and latex of rubber tree using RT-PCR based methods. Both cDNAs contain an open reading frame (ORF) of 1416bp encoding 471 amino acids with a molecular mass of about 51kDa. The deduced HbDXRs show extensive sequence similarities to that of other plant DXRs (73-87% identity). Molecular modeling revealed that the two HbDXRs contain all typical characteristics of DXR and share spatial structures, which are very similar to that of Escherichia coli DXR. Phylogenetic and DNA gel blot analyses suggested that a duplication of the DXR gene has occurred in the rubber tree. Semi-quantitative RT-PCR analysis showed that the HbDXR genes are differentially regulated in various tissues of the rubber tree. The HbDXR2 was more highly expressed in clone RRIM 600 than in the wild type, and this is consistent with higher rubber content of this clone. While 2-chloroethane phosphonic acid (ethephon) significantly increased latex yield, it only transiently induced the HbDXR2 gene. The expression of HbDXR2 in the latex suggests its important role in isoprenoid biosynthesis by substrate molecules, indicating that the MEP pathway may have some indirect roles in the biosynthesis of rubber.
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Affiliation(s)
- Yortyot Seetang-Nun
- Department of Biochemistry, Faculty of Science, Prince of Songkla University, Hat-Yai, Songkhla 90112, Thailand
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Boyandin AN, Kalacheva GS, Rodicheva EK, Volova TG. Luminous bacteria as potential producers of resorbed polyhydroxyalkanoate polyesters. DOKL BIOCHEM BIOPHYS 2007; 416:248-51. [PMID: 18064824 DOI: 10.1134/s1607672907050067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- A N Boyandin
- Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Akademgorodok 50, Krasnoyarsk, 660036, Russia
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Galiani PD, Malmonge JA, Santos DPD, Malmonge LF. Compósitos de borracha natural com polianilina. POLIMEROS 2007. [DOI: 10.1590/s0104-14282007000200007] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Compósitos de borracha natural (Hevea brasiliensis)-BN/polianilina - PANI, com diferentes composições foram obtidos através da polimerização por emulsão do monômero anilina na presença da BN e do ácido dodecilbenzeno sulfônico (DBSA). Filmes finos e homogêneos foram obtidos por prensagem a quente. Os compósitos foram caracterizados por condutividade elétrica, FTIR, UV-vis-NIR, DSC e difração de raios X. Compósito com condutividade elétrica cerca de 14 ordens de grandeza maior que a BN foi obtido. Este alto valor de condutividade é atribuído à formação da PANI no estado dopado no compósito, que foi verificado através das técnicas de UV-vis-NIR e FTIR. Os resultados obtidos com a técnica de DSC e difratometria de raios X indicaram que os polímeros são imiscíveis e que a presença da borracha não altera significantemente a fase cristalina da PANI-DBSA no compósito.
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Weber N, Bergander K, Fehling E, Klein E, Vosmann K, Mukherjee KD. Copolymeric polythioesters by lipase-catalyzed thioesterification and transthioesterification of α,ω-alkanedithiols. Appl Microbiol Biotechnol 2006; 70:290-7. [PMID: 16007456 DOI: 10.1007/s00253-005-027-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2005] [Revised: 05/09/2005] [Accepted: 05/19/2005] [Indexed: 11/24/2022]
Abstract
Linear copolymeric polythioesters [PTE; poly(alpha,omega-alkanedioic acid-co-alpha,omega-alkanedithiols)] were formed in good yield (approximately 69%) by thioesterification of 1,12-dodecanedioic acid with 1,6-hexanedithiol and 1,8-octanedithiol, respectively, catalyzed by immobilized lipase from Rhizomucor miehei (Lipozyme RM IM) in vacuo without a solvent. Similarly, transthioesterification (thiolysis) of diethyl 1,12-dodecanedioate with 1,6-hexanedithiol led to the formation of approximately 66% PTE. Poly (1,12-dodecanedioic acid-co-1,6-hexanedithiol) and poly (1,12-dodecanedioic acid-co-1,8-octanedithiol) were extracted from the reaction mixture using methyl-t-butylether, precipitated at -20 degrees C and the precipitates extracted with boiling i-hexane to yield two fractions of PTE. The i-hexane-insoluble fraction of poly (1,12-dodecanedioic acid-co-1,6-hexanedithiol) shows an average molecular mass (Mw) of 1,212 Da, corresponding to a molecular weight range of up to 13,200 Da and a degree of polymerization of up to 38 monomer units. The i-hexane-insoluble fraction of poly (1,12-dodecanedioic acid-co-1,8-octanedithiol) shows a Mw of 2,360 Da, corresponding to a molecular weight range of up to 19,500 Da and a maximum degree of polymerization of up to 52 monomer units. The low-molecular weight (<800 Da) reaction products of thioesterification of 1,12-dodecanedioic acid with 1,6-hexanedithiol, elucidated by gas chromatography-mass spectroscopy, show the following intermediates: (1) 9,20-dioxo-1,8-dithiacycloeicosane; (2) 17,28-dioxo-1,8,9,16-tetrathiacyclooctacosane; (3) 1,12-dodecanedioic acid methyl(O)ester 6'-S-mercaptohexyl thio(S)ester; and (4) oligomeric linear thioester, formed by thioesterification of two molecules of 1,12-dodecanedioic acid with one molecule of 1,6-hexanedithiol.
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Affiliation(s)
- N Weber
- Institute for Lipid Research, Federal Research Center for Nutrition and Food, Piusallee 68-76, 48147, Münster, Germany.
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Ren Q, de Roo G, van Beilen JB, Zinn M, Kessler B, Witholt B. Poly(3-hydroxyalkanoate) polymerase synthesis and in vitro activity in recombinant Escherichia coli and Pseudomonas putida. Appl Microbiol Biotechnol 2005; 69:286-92. [PMID: 15846484 DOI: 10.1007/s00253-005-1995-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2005] [Revised: 04/05/2005] [Accepted: 04/05/2005] [Indexed: 10/25/2022]
Abstract
We tested the synthesis and in vitro activity of the poly(3-hydroxyalkanoate) (PHA) polymerase 1 from Pseudomonas putida GPo1 in both P. putida GPp104 and Escherichia coli JMU193. The polymerase encoding gene phaC1 was expressed using the inducible PalkB promoter. It was found that the production of polymerase could be modulated over a wide range of protein levels by varying inducer concentrations. The optimal inducer dicyclopropylketone concentrations for PHA production were at 0.03% (v/v) for P. putida and 0.005% (v/v) for E. coli. Under these concentrations the maximal polymerase level synthesized in the E. coli host (6% of total protein) was about three- to fourfold less than that in P. putida (20%), whereas the maximal level of PHA synthesized in the E. coli host (8% of total cell dry weight) was about fourfold less than that in P. putida (30%). In P. putida, the highest specific activity of polymerase was found in the mid-exponential growth phase with a maximum of 40 U/g polymerase, whereas in E. coli, the maximal specific polymerase activity was found in the early stationary growth phase (2 U/g polymerase). Our results suggest that optimal functioning of the PHA polymerase requires factors or a molecular environment that is available in P. putida but not in E. coli.
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Affiliation(s)
- Qun Ren
- Biocompatible Materials, Materials Science and Technology (EMPA), 9014 St. Gallen, Switzerland.
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Rattanapittayaporn A, Wititsuwannakul D, Wititsuwannakul R. Significant role of bacterial undecaprenyl diphosphate (C55-UPP) for rubber synthesis by Hevea latex enzymes. Macromol Biosci 2005; 4:1039-52. [PMID: 15543542 DOI: 10.1002/mabi.200400096] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Washed bottom fraction (BF) membrane-bound particles of centrifuged fresh Hevea latex were found to be very active in rubber biosynthesis (RB). The washed BF membrane (WBM) showed higher RB activity and is strongly stimulated by anionic surfactants--more by DOC than SDS. WBM enzymes system can synthesize rubber either with allylic isoprenes (higher RB) or without (lower RB). Washed rubber particles (WRP), used generally in RB assays, had very low RB activity compared to the much higher activity observed for WBM. Bacterial undecaprenyl diphoshate (C(55)-UPP) was very active allylic initiator for rubber synthesis by WBM. Comparisons of allylic UPP with the shorter ones (C(15)-FPP, C(20)-GGPP) showed that UPP was the most effective. WBM activity orders were UPP >> GGPP > FPP. The DOC activated WBM synthesized less polyprenyl intermediates (butanol extractable) but more final rubber product (toluene/hexane extract), different than FPP and GGPP. WBM enzymes were highly versatile in using diverse different allylics, but UPP was most preferable. WRP was found a little active for UPP with DOC, but still much lower than WBM. Rubber product analysis by RP-TLC with acetone/hexane solvent system showed that WBM was mostly rubber, but WRP was mainly the intermediates. Quantitative analysis showed that WBM labeled rubber was confined to the origin spot, different than WRP as mainly labeled intermediates. It was thus confirmed that the WBM plays the key role in RB functions, and not WRP as mostly reported. WBM served as the actual rubber synthesis site, and bacterial UPP was very good RB initiator.
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Affiliation(s)
- Atiya Rattanapittayaporn
- Department of Biochemistry, Faculty of Science, Prince of Songkla University, Hat-Yai, Songkla 90112, Thailand
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Stubbe J, Tian J, He A, Sinskey AJ, Lawrence AG, Liu P. NONTEMPLATE-DEPENDENT POLYMERIZATION PROCESSES: Polyhydroxyalkanoate Synthases as a Paradigm. Annu Rev Biochem 2005; 74:433-80. [PMID: 15952894 DOI: 10.1146/annurev.biochem.74.082803.133013] [Citation(s) in RCA: 116] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
This review focuses on nontemplate-dependent polymerases that use water-soluble substrates and convert them into water-insoluble polymers that form granules or inclusions within the cell. The initial part of the review summarizes briefly the current knowledge of polymer formation catalyzed by starch and glycogen synthases, polyphosphate kinase (a polymerase), cyanophycin synthetases, and rubber synthases. Specifically, our current understanding of their mechanisms of initiation, elongation (including granule formation), termination, remodeling, and polymer reutilization will be presented. General underlying principles that govern these types of polymerization reactions will be enumerated as a paradigm for all nontemplate-dependent polymerizations. The bulk of the review then focuses on polyhydroxyalkanoate (PHA) synthases that generate polyoxoesters. These enzymes are of interest as they generate biodegradable polymers. Our current knowledge of PHA production and utilization in vitro and in vivo as well as the contribution of many proteins to these processes will be reviewed.
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Affiliation(s)
- Joanne Stubbe
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
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Abstract
Tissue engineering often makes use of biodegradable scaffolds to guide and promote controlled cellular growth and differentiation in order to generate new tissue. There has been significant research regarding the effects of scaffold surface chemistry and degradation rate on tissue formation and the importance of these parameters is widely recognised. Nevertheless, studies describing the role of mechanical stimuli during tissue development and function suggest that the mechanical properties of the scaffold will also be important. In particular, scaffold mechanics should be taken into account if mechanical stimulation, such as cyclic strain, will be incorporated into strategies to grow improved tissues or the target tissue to be replaced has elastomeric properties. Biodegradable polyesters, such as polyglycolide, polylactide and poly(lactide-co-glycolide), although commonly used in tissue engineering, undergo plastic deformation and failure when exposed to long-term cyclic strain, limiting their use in engineering elastomeric tissues. This review will cover the latest advances in the development of biodegradable polyester elastomers for use as scaffolds to engineer tissues, such as heart valves and blood vessels.
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Affiliation(s)
- Antonio R Webb
- Northwestern University, Biomedical Engineering Department, 2145 Sheridan Rd, Room E310, Evanston, IL 60208, USA
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