1
|
Berrios L, Yeam J, Holm L, Robinson W, Pellitier PT, Chin ML, Henkel TW, Peay KG. Positive interactions between mycorrhizal fungi and bacteria are widespread and benefit plant growth. Curr Biol 2023:S0960-9822(23)00760-1. [PMID: 37369208 DOI: 10.1016/j.cub.2023.06.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 05/05/2023] [Accepted: 06/02/2023] [Indexed: 06/29/2023]
Abstract
Bacteria, ectomycorrhizal (EcM) fungi, and land plants have been coevolving for nearly 200 million years, and their interactions presumably contribute to the function of terrestrial ecosystems. The direction, stability, and strength of bacteria-EcM fungi interactions across landscapes and across a single plant host, however, remains unclear. Moreover, the genetic mechanisms that govern them have not been addressed. To these ends, we collected soil samples from Bishop pine forests across a climate-latitude gradient spanning coastal California, fractionated the soil samples based on their proximity to EcM-colonized roots, characterized the microbial communities using amplicon sequencing, and generated linear regression models showing the impact that select bacterial taxa have on EcM fungal abundance. In addition, we paired greenhouse experiments with transcriptomic analyses to determine the directionality of these relationships and identify which genes EcM-synergist bacteria express during tripartite symbioses. Our data reveal that ectomycorrhizas (i.e., EcM-colonized roots) enrich conserved bacterial taxa across climatically heterogeneous regions. We also show that phylogenetically diverse EcM synergists are positively associated with plant and fungal growth and have unique gene expression profiles compared with EcM-antagonist bacteria. In sum, we identify common mechanisms that facilitate widespread and diverse multipartite symbioses, which inform our understanding of how plants develop in complex environments.
Collapse
Affiliation(s)
- Louis Berrios
- Department of Biology, Stanford University, Stanford, CA 94305, USA.
| | - Jay Yeam
- Department of Biology, Stanford University, Stanford, CA 94305, USA
| | | | - Wallis Robinson
- Forestry and Forest Health Program, University of California Cooperative Extension Humboldt and Del Norte Counties, Eureka, CA 95503, USA
| | | | - Mei Lin Chin
- Department of Biological Sciences, California State Polytechnic University, Humboldt, Arcata, CA 95521, USA
| | - Terry W Henkel
- Department of Biological Sciences, California State Polytechnic University, Humboldt, Arcata, CA 95521, USA
| | - Kabir G Peay
- Department of Biology, Stanford University, Stanford, CA 94305, USA; Department of Earth System Science, Stanford University, Stanford, CA 94305, USA
| |
Collapse
|
2
|
Jia Q, Zhang H, Zhao A, Qu L, Xiong W, Alam MA, Miao J, Wang W, Li F, Xu J, Lv Y. Produce D-allulose from non-food biomass by integrating corn stalk hydrolysis with whole-cell catalysis. Front Bioeng Biotechnol 2023; 11:1156953. [PMID: 36911188 PMCID: PMC9998921 DOI: 10.3389/fbioe.2023.1156953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 02/17/2023] [Indexed: 03/14/2023] Open
Abstract
D-allulose is a high-value rare sugar with many health benefits. D-allulose market demand increased dramatically after approved as generally recognized as safe (GRAS). The current studies are predominantly focusing on producing D-allulose from either D-glucose or D-fructose, which may compete foods against human. The corn stalk (CS) is one of the main agricultural waste biomass in the worldwide. Bioconversion is one of the promising approach to CS valorization, which is of significance for both food safety and reducing carbon emission. In this study, we tried to explore a non-food based route by integrating CS hydrolysis with D-allulose production. Firstly we developed an efficient Escherichia coli whole-cell catalyst to produce D-allulose from D-glucose. Next we hydrolyzed CS and achieved D-allulose production from the CS hydrolysate. Finally we immobilized the whole-cell catalyst by designing a microfluidic device. Process optimization improved D-allulose titer by 8.61 times, reaching 8.78 g/L from CS hydrolysate. With this method, 1 kg CS was finally converted to 48.87 g D-allulose. This study validated the feasibility of valorizing corn stalk by converting it to D-allulose.
Collapse
Affiliation(s)
- Qing Jia
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, China
| | - Hui Zhang
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
| | - Anqi Zhao
- School of Life Sciences, Zhengzhou University, Zhengzhou, China
| | - Lingbo Qu
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, China
| | - Wenlong Xiong
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, China
| | - Md Asraful Alam
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, China
| | - Jixing Miao
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, China
| | - Weigao Wang
- Department of Chemical Engineering, Shriram Center, Stanford University, Stanford, CA, United States
| | - Feihu Li
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, China.,State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, China
| | - Jingliang Xu
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, China
| | - Yongkun Lv
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, China
| |
Collapse
|
3
|
Wang Y, Shi X, Huang X, Huang C, Wang H, Yin H, Shao Y, Li P. Linking microbial community composition to farming pattern in selenium-enriched region: Potential role of microorganisms on Se geochemistry. J Environ Sci (China) 2022; 112:269-279. [PMID: 34955211 DOI: 10.1016/j.jes.2021.05.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 05/10/2021] [Accepted: 05/10/2021] [Indexed: 06/14/2023]
Abstract
Selenium (Se) is an essential micronutrient for lives. Indigenous microbial communities play an important role on Se geochemistry in soils. In this study, the microbial community composition and functions of 53 soil samples were investigated using high-throughput sequencing. Samples were divided into 3 groups with different farming types based on the measured geochemical parameters and microbial functional structures. Results indicated that putative Se related bacteria Bacillus, Dyella, Paenibacillus, Burkholderia and Brevibacillus were dominant in dryland plantation soils which were characterized with higher available Se and low contents of H2O, total organic carbon (TOC), NH4+ and NO2-. In contrast, the putative denitrifier Pseudomonas dominated in flooded paddy soils with higher TOC, NO3- and organic Se, whereas genera Rhizobium, Nitrosospira, and Geobacter preferred woodland soils with higher oxidation-reduction potential (ORP), pH, NH4+ and Fe. Farming patterns resulted in distinct geochemical parameters including moisture, pH, ORP, TOC, and contents of soluble Fe, NO2- and NH4+, shaping the microbial communities, which in turn affected Se forms in soils. This study provides a valuable insight into understanding of Se biogeochemistry in soils and prospective strategy for Se-rich agriculture production.
Collapse
Affiliation(s)
- Yanhong Wang
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China
| | - Xinyan Shi
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China
| | - Xianxin Huang
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China
| | - Chunlei Huang
- Zhejiang Institute of Geological Survey, Hangzhou 311203, China
| | - Helin Wang
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China
| | - Hanqin Yin
- Zhejiang Institute of Geological Survey, Hangzhou 311203, China
| | - Yixian Shao
- Zhejiang Institute of Geological Survey, Hangzhou 311203, China
| | - Ping Li
- State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China.
| |
Collapse
|
4
|
Optimization of various encapsulation systems for efficient immobilization of actinobacterial glucose isomerase. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2020. [DOI: 10.1016/j.bcab.2020.101766] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
|
5
|
Van Aelst K, Van Sinay E, Vangeel T, Cooreman E, Van den Bossche G, Renders T, Van Aelst J, Van den Bosch S, Sels BF. Reductive catalytic fractionation of pine wood: elucidating and quantifying the molecular structures in the lignin oil. Chem Sci 2020; 11:11498-11508. [PMID: 34094394 PMCID: PMC8162782 DOI: 10.1039/d0sc04182c] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 09/25/2020] [Indexed: 12/26/2022] Open
Abstract
In-depth structural analysis of biorefined lignin is imperative to understand its physicochemical properties, essential for its efficient valorization to renewable materials and chemicals. Up to now, research on Reductive Catalytic Fractionation (RCF) of lignocellulose biomass, an emerging biorefinery technology, has strongly focused on the formation, separation and quantitative analysis of the abundant lignin-derived phenolic monomers. However, detailed structural information on the linkages in RCF lignin oligomers, constituting up to 50 wt% of RCF lignin, and their quantification, is currently lacking. This study discloses new detailed insights into the pine wood RCF lignin oil's molecular structure through the combination of fractionation and systematic analysis, resulting in the first assignment of the major RCF-derived structural units in the 1H-13C HSQC NMR spectrum of the RCF oligomers. Specifically, β-5 γ-OH, β-5 ethyl, β-1 γ-OH, β-1 ethyl, β-β 2x γ-OH, β-β THF, and 5-5 inter-unit linkages were assigned unambiguously, resulting in the quantification of over 80% of the lignin inter-unit linkages and end-units. Detailed inspection of the native lignin inter-unit linkages and their conversion reveals the occurring hydrogenolysis chemistry and the unambiguous proof of absence of lignin fragment condensation during proper RCF processing. Overall, the study offers an advanced analytical toolbox for future RCF lignin conversion and lignin structural analysis research, and valuable insights for lignin oil valorization purposes.
Collapse
Affiliation(s)
- K Van Aelst
- Centre for Sustainable Catalysis and Engineering, KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
| | - E Van Sinay
- Centre for Sustainable Catalysis and Engineering, KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
| | - T Vangeel
- Centre for Sustainable Catalysis and Engineering, KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
| | - E Cooreman
- Centre for Sustainable Catalysis and Engineering, KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
| | - G Van den Bossche
- Centre for Sustainable Catalysis and Engineering, KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
| | - T Renders
- Centre for Sustainable Catalysis and Engineering, KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
| | - J Van Aelst
- Centre for Sustainable Catalysis and Engineering, KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
| | - S Van den Bosch
- Centre for Sustainable Catalysis and Engineering, KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
| | - B F Sels
- Centre for Sustainable Catalysis and Engineering, KU Leuven Celestijnenlaan 200F 3001 Leuven Belgium
| |
Collapse
|
6
|
Wang X, Deng Z, Liu T. Marker‐Free System Using Ribosomal Promoters Enhanced Xylose/Glucose Isomerase Production inStreptomyces rubiginosus. Biotechnol J 2019; 14:e1900114. [DOI: 10.1002/biot.201900114] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Revised: 06/05/2019] [Indexed: 11/07/2022]
Affiliation(s)
- Xiaojie Wang
- State Key Laboratory of Microbial Metabolism, School of Life Science and BiotechnologyShanghai Jiao Tong UniversityShanghai 200030 P. R. China
| | - Zixin Deng
- State Key Laboratory of Microbial Metabolism, School of Life Science and BiotechnologyShanghai Jiao Tong UniversityShanghai 200030 P. R. China
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education and School of Pharmaceutical SciencesWuhan UniversityWuhan 430071 P. R. China
- Hubei Engineering Laboratory for Synthetic MicrobiologyWuhan Institute of BiotechnologyWuhan 430075 P. R. China
| | - Tiangang Liu
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education and School of Pharmaceutical SciencesWuhan UniversityWuhan 430071 P. R. China
- Hubei Engineering Laboratory for Synthetic MicrobiologyWuhan Institute of BiotechnologyWuhan 430075 P. R. China
| |
Collapse
|
7
|
A novel thermostable and efficient Class II glucose isomerase from the thermophilic Caldicoprobacter algeriensis: Biochemical characterization, molecular investigation, and application in High Fructose Syrup production. Int J Biol Macromol 2019; 129:31-40. [DOI: 10.1016/j.ijbiomac.2019.01.150] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2018] [Revised: 01/18/2019] [Accepted: 01/26/2019] [Indexed: 01/01/2023]
|
8
|
Zhang P, Wang ZP, Liu S, Wang YL, Zhang ZF, Liu XM, Du YM, Yuan XL. Overexpression of secreted sucrose isomerase in Yarrowia lipolytica and its application in isomaltulose production after immobilization. Int J Biol Macromol 2019; 121:97-103. [DOI: 10.1016/j.ijbiomac.2018.10.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 09/18/2018] [Accepted: 10/01/2018] [Indexed: 11/25/2022]
|
9
|
Huang J, Yu L, Zhang W, Zhang T, Guang C, Mu W. Production of d-mannose from d-glucose by co-expression of d-glucose isomerase and d-lyxose isomerase in Escherichia coli. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2018; 98:4895-4902. [PMID: 29569257 DOI: 10.1002/jsfa.9021] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2018] [Revised: 03/15/2018] [Accepted: 03/18/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND d-Mannose is not only the epimer of d-glucose at the C-2 position, but also the aldose isomer of d-fructose. Because of its physiological properties and health benefits, d-mannose has attracted public interest. It has been confirmed that d-mannose has broad applications in food, cosmetics, and pharmaceutical industries. According to the Izumoring strategy, d-glucose isomerase (d-GI) and d-lyxose isomerase (d-LI) play important roles in the conversions of d-fructose from d-glucose and of d-mannose from d-fructose respectively. In this study, a one-step enzyme process of d-mannose production from d-glucose has been constructed by co-expression of the d-GI from Acidothermus cellulolyticus and d-LI from Thermosediminibacter oceani in Escherichia coli BL21(DE3) cells. RESULTS The co-expression system exhibits maximum activity at pH 6.5 and 65 °C with Co2+ supplement. It is relatively thermostable at less than 65 °C. When the reaction reaches equilibrium, the ratio of d-glucose, d-fructose, and d-mannose is approximately 34 : 49.6 : 16.4. By using this co-expression system, about 60.0 g L-1 d-mannose is obtained from 400 g L-1 d-glucose in 8 h. CONCLUSION This co-expression of d-GI and d-LI system provides a novel and efficient approach for d-mannose production. © 2018 Society of Chemical Industry.
Collapse
Affiliation(s)
- Jiawei Huang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Lina Yu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Wenli Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Tao Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Cuie Guang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Wanmeng Mu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, China
- International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, China
| |
Collapse
|
10
|
Dibutyl phthalate alters the metabolic pathways of microbes in black soils. Sci Rep 2018; 8:2605. [PMID: 29422490 PMCID: PMC5805725 DOI: 10.1038/s41598-018-21030-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Accepted: 01/29/2018] [Indexed: 01/08/2023] Open
Abstract
Dibutyl phthalate (DBP) is well known as a high-priority pollutant. This study explored the impacts of DBP on the metabolic pathways of microbes in black soils in the short term (20 days). The results showed that the microbial communities were changed in black soils with DBP. In nitrogen cycling, the abundances of the genes were elevated by DBP. DBP contamination facilitated 3'-phosphoadenosine-5'-phosphosulfate (PAPS) formation, and the gene flux of sulfate metabolism was increased. The total abundances of ABC transporters and the gene abundances of the monosaccharide-transporting ATPases MalK and MsmK were increased by DBP. The total abundance of two-component system (TCS) genes and the gene abundances of malate dehydrogenase, histidine kinase and citryl-CoA lyase were increased after DBP contamination. The total abundance of phosphotransferase system (PTS) genes and the gene abundances of phosphotransferase, Crr and BglF were raised by DBP. The increased gene abundances of ABC transporters, TCS and PTS could be the reasons for the acceleration of nitrogen, carbon and sulfate metabolism. The degrading-genes of DBP were increased markedly in soil exposed to DBP. In summary, DBP contamination altered the microbial community and enhanced the gene abundances of the carbon, nitrogen and sulfur metabolism in black soils in the short term.
Collapse
|
11
|
Zhang W, Li H, Jiang B, Zhang T, Mu W. Production of d-allulose from d-glucose by Escherichia coli transformant cells co-expressing d-glucose isomerase and d-psicose 3-epimerase genes. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2017; 97:3420-3426. [PMID: 28009059 DOI: 10.1002/jsfa.8193] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 12/18/2016] [Accepted: 12/19/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND d-Allulose is a novel and low-calorie rare monosaccharide that is a C-3 epimer of d-fructose. Because of its excellent physiological properties and commercial potential, d-allulose has attracted researchers' interests. Based on the Izumoring strategy, d-allulose is converted from d-fructose by d-psicose 3-epimerase (DPEase), while d-fructose is converted from d-glucose by d-glucose isomerase (GIase). In this study, we created a cellular system capable of converting d-glucose to d-allulose in a one-step process that co-expressed the GIase from Acidothermus cellulolyticus and the DPEase from Dorea sp. CAG. RESULTS The co-expression plasmid pETDuet-Dosp-DPE/Acce-GI was generated and transformed into Escherichia coli BL21(DE3) cells. The recombinant co-expression cells exhibited maximum catalytic activity at pH 6.5 and 75 °C. These cells were thermostable at less than 60 °C. The addition of Co2+ significantly increased the catalytic activity by 10.8-fold. When the reaction equilibrium was reached, the ratio of d-glucose, d-fructose and d-allulose was approximately 6.5:7:3, respectively. CONCLUSION A recombinant co-expression strain that catalysed the bioconversion of d-allulose from d-glucose in a one-step process was created and characterised. When adding 500 g L-1 d-glucose as a substrate, 204.3 g L-1 d-fructose and 89.1 g L-1 d-allulose were produced. © 2016 Society of Chemical Industry.
Collapse
Affiliation(s)
- Wenli Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Hao Li
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Bo Jiang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Tao Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| | - Wanmeng Mu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China
| |
Collapse
|
12
|
Characterization of a novel thermostable l-rhamnose isomerase from Thermobacillus composti KWC4 and its application for production of d-allose. Process Biochem 2017. [DOI: 10.1016/j.procbio.2016.11.025] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
13
|
Jia DX, Zhou L, Zheng YG. Properties of a novel thermostable glucose isomerase mined from Thermus oshimai and its application to preparation of high fructose corn syrup. Enzyme Microb Technol 2017; 99:1-8. [PMID: 28193326 DOI: 10.1016/j.enzmictec.2017.01.001] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Revised: 11/17/2016] [Accepted: 01/02/2017] [Indexed: 11/25/2022]
Abstract
Glucose isomerase (GI) is used in vitro to convert d-glucose to d-fructose, which is capable of commercial producing high fructose corn syrup (HFCS). To manufacture HFCS at elevated temperature and reduce the cost of enriching syrups, novel refractory GIs from Thermoanaerobacterium xylanolyticum (TxGI), Thermus oshimai (ToGI), Geobacillus thermocatenulatus (GtGI) and Thermoanaerobacter siderophilus (TsGI) were screened via genome mining approach. The enzymatic characteristics research showed that ToGI had higher catalytic efficiency and superior thermostability toward d-glucose among the screened GIs. Its optimum temperature reached 95°C and could retain more than 80% of initial activity in the presence of 20mM Mn2+ at 85°C for 48h. The Km and kcat/Km values for ToGI were 81.46mM and 21.77min-1mM-1, respectively. Furthermore, the maximum conversion yield of 400g/L d-glucose to d-fructose at 85°C was 52.16%. Considering its excellent high thermostability and ameliorable application performance, ToGI might be promising for realization of future industrial production of HFCS at elevated temperature.
Collapse
Affiliation(s)
- Dong-Xu Jia
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, PR China; Engineering Research Center of Bioconversion and Biopurification of the Ministry of Education, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Lin Zhou
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, PR China; Engineering Research Center of Bioconversion and Biopurification of the Ministry of Education, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Yu-Guo Zheng
- Key Laboratory of Bioorganic Synthesis of Zhejiang Province, College of Biotechnology and Bioengineering, Zhejiang University of Technology, Hangzhou 310014, PR China; Engineering Research Center of Bioconversion and Biopurification of the Ministry of Education, Zhejiang University of Technology, Hangzhou 310014, PR China.
| |
Collapse
|
14
|
Efficient biotransformation of d-fructose to d-mannose by a thermostable d-lyxose isomerase from Thermosediminibacter oceani. Process Biochem 2016. [DOI: 10.1016/j.procbio.2016.08.023] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
15
|
Zhang W, Li H, Zhang T, Jiang B, Zhou L, Mu W. Characterization of a d-psicose 3-epimerase from Dorea sp. CAG317 with an acidic pH optimum and a high specific activity. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcatb.2015.05.018] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
16
|
Shivlata L, Satyanarayana T. Thermophilic and alkaliphilic Actinobacteria: biology and potential applications. Front Microbiol 2015; 6:1014. [PMID: 26441937 PMCID: PMC4585250 DOI: 10.3389/fmicb.2015.01014] [Citation(s) in RCA: 107] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Accepted: 09/07/2015] [Indexed: 11/13/2022] Open
Abstract
Microbes belonging to the phylum Actinobacteria are prolific sources of antibiotics, clinically useful bioactive compounds and industrially important enzymes. The focus of the current review is on the diversity and potential applications of thermophilic and alkaliphilic actinobacteria, which are highly diverse in their taxonomy and morphology with a variety of adaptations for surviving and thriving in hostile environments. The specific metabolic pathways in these actinobacteria are activated for elaborating pharmaceutically, agriculturally, and biotechnologically relevant biomolecules/bioactive compounds, which find multifarious applications.
Collapse
|
17
|
Mu W, Yu L, Zhang W, Zhang T, Jiang B. Isomerases for biotransformation of D-hexoses. Appl Microbiol Biotechnol 2015; 99:6571-84. [DOI: 10.1007/s00253-015-6788-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Revised: 06/18/2015] [Accepted: 06/19/2015] [Indexed: 10/23/2022]
|
18
|
Characterization of a mutant glucose isomerase from Thermoanaerobacterium saccharolyticum. J Ind Microbiol Biotechnol 2014; 41:1581-9. [PMID: 25139657 DOI: 10.1007/s10295-014-1478-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Accepted: 06/18/2014] [Indexed: 10/24/2022]
Abstract
A series of site-directed mutant glucose isomerase at tryptophan 139 from Thermoanaerobacterium saccharolyticum strain B6A were purified to gel electrophoretic homogeneity, and the biochemical properties were determined. W139F mutation is the most efficient mutant derivative with a tenfold increase in its catalytic efficiency toward glucose compared with the native GI. With a maximal activity at 80 °C of 59.58 U/mg on glucose, this mutant derivative is the most active type ever reported. The enzyme activity was maximal at 90 °C and like other glucose isomerase, this mutant enzyme required Co(2+) or Mg(2+) for enzyme activity and thermal stability (stable for 20 h at 80 °C in the absence of substrate). Its optimum pH was around 7.0, and it had 86 % of its maximum activity at pH 6.0 incubated for 12 h at 60 °C. This enzyme was determined as thermostable and weak-acid stable. These findings indicated that the mutant GI W139F from T. saccharolyticum strain B6A is appropriate for use as a potential candidate for high-fructose corn syrup producing enzyme.
Collapse
|
19
|
Current studies on sucrose isomerase and biological isomaltulose production using sucrose isomerase. Appl Microbiol Biotechnol 2014; 98:6569-82. [DOI: 10.1007/s00253-014-5816-2] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 05/06/2014] [Accepted: 05/08/2014] [Indexed: 10/25/2022]
|
20
|
Fan C, Liu K, Zhang T, Zhou L, Xue D, Jiang B, Mu W. Biochemical characterization of a thermostable l-arabinose isomerase from a thermoacidophilic bacterium, Alicyclobacillus hesperidum URH17-3-68. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.molcatb.2014.02.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
21
|
Probing the role of helix α1 in the acid-tolerance and thermal stability of the Streptomyces sp. SK Glucose Isomerase by site-directed mutagenesis. J Biotechnol 2014; 173:1-6. [PMID: 24440634 DOI: 10.1016/j.jbiotec.2014.01.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Revised: 12/26/2013] [Accepted: 01/03/2014] [Indexed: 11/20/2022]
Abstract
In order to investigate the role of helix α1 in the different biochemical properties between class I and class II Glucose Isomerases, a histidine and a phenylalanine residue were inserted at position 17 and 19 of Streptomyces sp. SK Glucose Isomerase (SKGI). In addition, W16 was substituted by a histidine. The H17/F19 insertion displaced the optimal pH of SKGI from 6.5 to 7-8 and slightly decreased the thermostability. As for the W16H mutant, a shift in optimal pH of SKGI from 6.5 to 6 was observed along with a decrease in the enzyme thermostability at 85°C with a half-life time reduced twice compared to the wild-type enzyme. Three-dimensional structure analysis suggested that the insertion of a histidine at position 17 results in the formation of new hydrogen bond with D287, thereby preventing it from deprotonating the O2 hydroxyl of the sugar at low pH, while the substitution W16H induced opposite effect by preventing hydrogen bond formation between D287 and W16 and thereby probably facilitating the hydrogen transfer during the isomerization reaction. The findings highlight the essential role of helix α1, which bears the three introduced mutations, in the acid-tolerance and the thermostability of SKGI and of glucose isomerases in general.
Collapse
|
22
|
Konak L, Kolcuoğlu Y, Ozbek E, Colak A, Ergenoglu B. Purification and characterization of an extremely stable glucose isomerase from Geobacillus thermodenitrificans TH2. APPL BIOCHEM MICRO+ 2013. [DOI: 10.1134/s0003683814010062] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|