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Gao J, Yu W, Li Y, Jin M, Yao L, Zhou YJ. Engineering co-utilization of glucose and xylose for chemical overproduction from lignocellulose. Nat Chem Biol 2023; 19:1524-1531. [PMID: 37620399 DOI: 10.1038/s41589-023-01402-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Accepted: 07/10/2023] [Indexed: 08/26/2023]
Abstract
Bio-refining lignocellulose could provide a sustainable supply of fuels and fine chemicals; however, the challenges associated with the co-utilization of xylose and glucose typically compromise the efficiency of lignocellulose conversion. Here we engineered the industrial yeast Ogataea polymorpha (Hansenula polymorpha) for lignocellulose biorefinery by facilitating the co-utilization of glucose and xylose to optimize the production of free fatty acids (FFAs) and 3-hydroxypropionic acid (3-HP) from lignocellulose. We rewired the central metabolism for the enhanced supply of acetyl-coenzyme A and nicotinamide adenine dinucleotide phosphate hydrogen, obtaining 30.0 g l-1 of FFAs from glucose, with productivity of up to 0.27 g l-1 h-1. Strengthening xylose uptake and catabolism promoted the synchronous utilization of glucose and xylose, which enabled the production of 38.2 g l-1 and 7.0 g l-1 FFAs from the glucose-xylose mixture and lignocellulosic hydrolysates, respectively. Finally, this efficient cell factory was metabolically transformed for 3-HP production with the highest titer of 79.6 g l-1 in fed-batch fermentation in mixed glucose and xylose.
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Affiliation(s)
- Jiaoqi Gao
- Division of Biotechnology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, PR China
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, PR China
- Dalian Key Laboratory of Energy Biotechnology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, PR China
| | - Wei Yu
- Division of Biotechnology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, PR China
- University of Chinese Academy of Sciences, Beijing, PR China
| | - Yunxia Li
- Division of Biotechnology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, PR China
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, PR China
- Dalian Key Laboratory of Energy Biotechnology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, PR China
| | - Mingjie Jin
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing, PR China
| | - Lun Yao
- Division of Biotechnology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, PR China
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, PR China
- Dalian Key Laboratory of Energy Biotechnology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, PR China
| | - Yongjin J Zhou
- Division of Biotechnology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, PR China.
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, PR China.
- Dalian Key Laboratory of Energy Biotechnology, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, PR China.
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Sibirny AA. Metabolic engineering of non-conventional yeasts for construction of the advanced producers of biofuels and high-value chemicals. BBA ADVANCES 2022; 3:100071. [PMID: 37082251 PMCID: PMC10074886 DOI: 10.1016/j.bbadva.2022.100071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Non-conventional yeasts, i.e. yeasts different from Saccharomyces cerevisiae, represent heterogenous group of unicellular fungi consisting of near 1500 species. Some of these species have interesting and sometimes unique properties like ability to grow on methanol, n-alkanes, ferment pentose sugars xylose and l-arabinose, grow at high temperatures (50°С and more), overproduce riboflavin (vitamin B2) and others. These unique properties are important for development of basic science; moreover, some of them possess also significant applied interest for elaboration of new biotechnologies. Current paper represents review of the recent own results and of those of other authors in the field of non-conventional yeast study for construction of the advanced producers of biofuels (ethanol, isobutanol) from lignocellulosic sugars glucose and xylose or crude glycerol (Ogataea polymorpha, Magnusiomyces magnusii) and vitamin B2 (riboflavin) from glucose and cheese whey (Candida famata).
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Affiliation(s)
- Andriy A. Sibirny
- Institute of Cell Biology, NAS of Ukraine, Drahomanov Street 14/16, Lviv 79005 Ukraine
- University of Rzeszow, Zelwerowicza 4, Rzeszow 35-601 Poland
- Corresponding author at: Institute of Cell Biology, NAS of Ukraine, Drahomanov Street 14/16, Lviv 79005 Ukraine.
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Semkiv MV, Ruchala J, Tsaruk AY, Zazulya AZ, Vasylyshyn RV, Dmytruk OV, Zuo M, Kang Y, Dmytruk KV, Sibirny AA. The role of hexose transporter-like sensor hxs1 and transcription activator involved in carbohydrate sensing azf1 in xylose and glucose fermentation in the thermotolerant yeast Ogataea polymorpha. Microb Cell Fact 2022; 21:162. [PMID: 35964033 PMCID: PMC9375311 DOI: 10.1186/s12934-022-01889-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 08/06/2022] [Indexed: 11/24/2022] Open
Abstract
Background Fuel ethanol from lignocellulose could be important source of renewable energy. However, to make the process feasible, more efficient microbial fermentation of pentose sugars, mainly xylose, should be achieved. The native xylose-fermenting thermotolerant yeast Ogataea polymorpha is a promising organism for further development. Efficacy of xylose alcoholic fermentation by O. polymorpha was significantly improved by metabolic engineering. Still, genes involved in regulation of xylose fermentation are insufficiently studied. Results We isolated an insertional mutant of O.polymorpha with impaired ethanol production from xylose. The insertion occurred in the gene HXS1 that encodes hexose transporter-like sensor, a close homolog of Saccharomyces cerevisiae sensors Snf3 and Rgt2. The role of this gene in xylose utilization and fermentation was not previously elucidated. We additionally analyzed O.polymorpha strains with the deletion and overexpression of the corresponding gene. Strains with deletion of the HXS1 gene had slower rate of glucose and xylose consumption and produced 4 times less ethanol than the wild-type strain, whereas overexpression of HXS1 led to 10% increase of ethanol production from glucose and more than 2 times increase of ethanol production from xylose. We also constructed strains of O.polymorpha with overexpression of the gene AZF1 homologous to S. cerevisiae AZF1 gene which encodes transcription activator involved in carbohydrate sensing. Such transformants produced 10% more ethanol in glucose medium and 2.4 times more ethanol in xylose medium. Besides, we deleted the AZF1 gene in O. polymorpha. Ethanol accumulation in xylose and glucose media in such deletion strains dropped 1.5 and 1.8 times respectively. Overexpression of the HXS1 and AZF1 genes was also obtained in the advanced ethanol producer from xylose. The corresponding strains were characterized by 20–40% elevated ethanol accumulation in xylose medium. To understand underlying mechanisms of the observed phenotypes, specific enzymatic activities were evaluated in the isolated recombinant strains. Conclusions This paper shows the important role of hexose sensor Hxs1 and transcription factor Azf1 in xylose and glucose alcoholic fermentation in the native xylose-fermenting yeast O. polymorpha and suggests potential importance of the corresponding genes for construction of the advanced ethanol producers from the major sugars of lignocellulose.
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Affiliation(s)
- Marta V Semkiv
- Institute of Cell Biology, NAS of Ukraine, Drahomanov St, 14/16, 79005, Lviv, Ukraine
| | - Justyna Ruchala
- University of Rzeszow, Zelwerowicza 4, 35-601, Rzeszow, Poland
| | - Aksynia Y Tsaruk
- Institute of Cell Biology, NAS of Ukraine, Drahomanov St, 14/16, 79005, Lviv, Ukraine
| | - Anastasiya Z Zazulya
- Institute of Cell Biology, NAS of Ukraine, Drahomanov St, 14/16, 79005, Lviv, Ukraine
| | | | - Olena V Dmytruk
- Institute of Cell Biology, NAS of Ukraine, Drahomanov St, 14/16, 79005, Lviv, Ukraine.,University of Rzeszow, Zelwerowicza 4, 35-601, Rzeszow, Poland
| | - MingXing Zuo
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, Guizhou, 550014, Guiyang, China
| | - Yingqian Kang
- Department of Microbiology, School of Basic Medical Sciences, Guizhou Medical University, Guizhou, 550014, Guiyang, China
| | - Kostyantyn V Dmytruk
- Institute of Cell Biology, NAS of Ukraine, Drahomanov St, 14/16, 79005, Lviv, Ukraine.,University of Rzeszow, Zelwerowicza 4, 35-601, Rzeszow, Poland
| | - Andriy A Sibirny
- Institute of Cell Biology, NAS of Ukraine, Drahomanov St, 14/16, 79005, Lviv, Ukraine. .,University of Rzeszow, Zelwerowicza 4, 35-601, Rzeszow, Poland.
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Ruchala J, Sibirny AA. Pentose metabolism and conversion to biofuels and high-value chemicals in yeasts. FEMS Microbiol Rev 2020; 45:6034013. [PMID: 33316044 DOI: 10.1093/femsre/fuaa069] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 12/09/2020] [Indexed: 12/15/2022] Open
Abstract
Pentose sugars are widespread in nature and two of them, D-xylose and L-arabinose belong to the most abundant sugars being the second and third by abundance sugars in dry plant biomass (lignocellulose) and in general on planet. Therefore, it is not surprising that metabolism and bioconversion of these pentoses attract much attention. Several different pathways of D-xylose and L-arabinose catabolism in bacteria and yeasts are known. There are even more common and really ubiquitous though not so abundant pentoses, D-ribose and 2-deoxy-D-ribose, the constituents of all living cells. Thus, ribose metabolism is example of endogenous metabolism whereas metabolism of other pentoses, including xylose and L-arabinose, represents examples of the metabolism of foreign exogenous compounds which normally are not constituents of yeast cells. As a rule, pentose degradation by the wild-type strains of microorganisms does not lead to accumulation of high amounts of valuable substances; however, productive strains have been obtained by random selection and metabolic engineering. There are numerous reviews on xylose and (less) L-arabinose metabolism and conversion to high value substances; however, they mostly are devoted to bacteria or the yeast Saccharomyces cerevisiae. This review is devoted to reviewing pentose metabolism and bioconversion mostly in non-conventional yeasts, which naturally metabolize xylose. Pentose metabolism in the recombinant strains of S. cerevisiae is also considered for comparison. The available data on ribose, xylose, L-arabinose transport, metabolism, regulation of these processes, interaction with glucose catabolism and construction of the productive strains of high-value chemicals or pentose (ribose) itself are described. In addition, genome studies of the natural xylose metabolizing yeasts and available tools for their molecular research are reviewed. Metabolism of other pentoses (2-deoxyribose, D-arabinose, lyxose) is briefly reviewed.
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Affiliation(s)
- Justyna Ruchala
- Department of Microbiology and Molecular Genetics, University of Rzeszow, Zelwerowicza 4, Rzeszow 35-601, Poland.,Department of Molecular Genetics and Biotechnology, Institute of Cell Biology NAS of Ukraine, Drahomanov Street, 14/16, Lviv 79005, Ukraine
| | - Andriy A Sibirny
- Department of Microbiology and Molecular Genetics, University of Rzeszow, Zelwerowicza 4, Rzeszow 35-601, Poland.,Department of Molecular Genetics and Biotechnology, Institute of Cell Biology NAS of Ukraine, Drahomanov Street, 14/16, Lviv 79005, Ukraine
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Ruchala J, Kurylenko OO, Dmytruk KV, Sibirny AA. Construction of advanced producers of first- and second-generation ethanol in Saccharomyces cerevisiae and selected species of non-conventional yeasts (Scheffersomyces stipitis, Ogataea polymorpha). J Ind Microbiol Biotechnol 2019; 47:109-132. [PMID: 31637550 PMCID: PMC6970964 DOI: 10.1007/s10295-019-02242-x] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 10/01/2019] [Indexed: 12/20/2022]
Abstract
This review summarizes progress in the construction of efficient yeast ethanol producers from glucose/sucrose and lignocellulose. Saccharomyces cerevisiae is the major industrial producer of first-generation ethanol. The different approaches to increase ethanol yield and productivity from glucose in S. cerevisiae are described. Construction of the producers of second-generation ethanol is described for S. cerevisiae, one of the best natural xylose fermenters, Scheffersomyces stipitis and the most thermotolerant yeast known Ogataea polymorpha. Each of these organisms has some advantages and drawbacks. S. cerevisiae is the primary industrial ethanol producer and is the most ethanol tolerant natural yeast known and, however, cannot metabolize xylose. S. stipitis can effectively ferment both glucose and xylose and, however, has low ethanol tolerance and requires oxygen for growth. O. polymorpha grows and ferments at high temperatures and, however, produces very low amounts of ethanol from xylose. Review describes how the mentioned drawbacks could be overcome.
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Affiliation(s)
- Justyna Ruchala
- Department of Microbiology and Biotechnology, University of Rzeszow, Zelwerowicza 4, 35-601, Rzeszow, Poland
| | - Olena O Kurylenko
- Department of Molecular Genetics and Biotechnology, Institute of Cell Biology, NAS of Ukraine, Drahomanov Street, 14/16, Lviv, 79005, Ukraine
| | - Kostyantyn V Dmytruk
- Department of Molecular Genetics and Biotechnology, Institute of Cell Biology, NAS of Ukraine, Drahomanov Street, 14/16, Lviv, 79005, Ukraine
| | - Andriy A Sibirny
- Department of Microbiology and Biotechnology, University of Rzeszow, Zelwerowicza 4, 35-601, Rzeszow, Poland.
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Suzuki T, Hoshino T, Matsushika A. High-temperature ethanol production by a series of recombinant xylose-fermenting Kluyveromyces marxianus strains. Enzyme Microb Technol 2019; 129:109359. [DOI: 10.1016/j.enzmictec.2019.109359] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Revised: 06/11/2019] [Accepted: 06/13/2019] [Indexed: 12/29/2022]
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Yoo SJ, Moon HY, Kang HA. Screening and Selection of Production Strains: Secretory Protein Expression and Analysis in Hansenula polymorpha. Methods Mol Biol 2019; 1923:133-151. [PMID: 30737738 DOI: 10.1007/978-1-4939-9024-5_5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The thermotolerant methylotrophic yeast Hansenula polymorpha has been used as a host for the high-level production of recombinant proteins from industrial enzymes to therapeutic proteins. Despite favorable characteristics of the H. polymorpha-based platform for application to heterologous gene expression, several problems and limitations, such as over-glycosylation and proteolytic degradation, can be encountered in the development of production strains for secretory proteins. Here, H. polymorpha genetic tools and host strains, developed for authentic processing and modification of secretory recombinant proteins, are introduced with the analytical protocols.
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Affiliation(s)
- Su Jin Yoo
- Department of Life Science, College of Natural Science, Chung-Ang University, Seoul, Republic of Korea
| | - Hye Yun Moon
- Department of Life Science, College of Natural Science, Chung-Ang University, Seoul, Republic of Korea
| | - Hyun Ah Kang
- Department of Life Science, College of Natural Science, Chung-Ang University, Seoul, Republic of Korea.
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9
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Kwon DH, Park JB, Hong E, Ha SJ. Ethanol production from xylose is highly increased by the Kluyveromyces marxianus mutant 17694-DH1. Bioprocess Biosyst Eng 2018; 42:63-70. [DOI: 10.1007/s00449-018-2014-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 09/17/2018] [Indexed: 10/28/2022]
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Kurylenko OO, Ruchala J, Vasylyshyn RV, Stasyk OV, Dmytruk OV, Dmytruk KV, Sibirny AA. Peroxisomes and peroxisomal transketolase and transaldolase enzymes are essential for xylose alcoholic fermentation by the methylotrophic thermotolerant yeast, Ogataea (Hansenula) polymorpha. BIOTECHNOLOGY FOR BIOFUELS 2018; 11:197. [PMID: 30034524 PMCID: PMC6052537 DOI: 10.1186/s13068-018-1203-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 07/10/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Ogataea (Hansenula) polymorpha is one of the most thermotolerant xylose-fermenting yeast species reported to date. Several metabolic engineering approaches have been successfully demonstrated to improve high-temperature alcoholic fermentation by O. polymorpha. Further improvement of ethanol production from xylose in O. polymorpha depends on the identification of bottlenecks in the xylose conversion pathway to ethanol. RESULTS Involvement of peroxisomal enzymes in xylose metabolism has not been described to date. Here, we found that peroxisomal transketolase (known also as dihydroxyacetone synthase) and peroxisomal transaldolase (enzyme with unknown function) in the thermotolerant methylotrophic yeast, Ogataea (Hansenula) polymorpha, are required for xylose alcoholic fermentation, but not for growth on this pentose sugar. Mutants with knockout of DAS1 and TAL2 coding for peroxisomal transketolase and peroxisomal transaldolase, respectively, normally grow on xylose. However, these mutants were found to be unable to support ethanol production. The O. polymorpha mutant with the TAL1 knockout (coding for cytosolic transaldolase) normally grew on glucose and did not grow on xylose; this defect was rescued by overexpression of TAL2. The conditional mutant, pYNR1-TKL1, that expresses the cytosolic transketolase gene under control of the ammonium repressible nitrate reductase promoter did not grow on xylose and grew poorly on glucose media supplemented with ammonium. Overexpression of DAS1 only partially restored the defects displayed by the pYNR1-TKL1 mutant. The mutants defective in peroxisome biogenesis, pex3Δ and pex6Δ, showed normal growth on xylose, but were unable to ferment this sugar. Moreover, the pex3Δ mutant of the non-methylotrophic yeast, Scheffersomyces (Pichia) stipitis, normally grows on and ferments xylose. Separate overexpression or co-overexpression of DAS1 and TAL2 in the wild-type strain increased ethanol synthesis from xylose 2 to 4 times with no effect on the alcoholic fermentation of glucose. Overexpression of TKL1 and TAL1 also elevated ethanol production from xylose. Finally, co-overexpression of DAS1 and TAL2 in the best previously isolated O. polymorpha xylose to ethanol producer led to increase in ethanol accumulation up to 16.5 g/L at 45 °C; or 30-40 times more ethanol than is produced by the wild-type strain. CONCLUSIONS Our results indicate the importance of the peroxisomal enzymes, transketolase (dihydroxyacetone synthase, Das1), and transaldolase (Tal2), in the xylose alcoholic fermentation of O. polymorpha.
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Affiliation(s)
- Olena O. Kurylenko
- Department of Molecular Genetics and Biotechnology, Institute of Cell Biology, Drahomanov Str., 14/16, Lviv, 79005 Ukraine
| | - Justyna Ruchala
- Department of Biotechnology and Microbiology, University of Rzeszow, Zelwerowicza 4, 35-601 Rzeszow, Poland
| | - Roksolana V. Vasylyshyn
- Department of Molecular Genetics and Biotechnology, Institute of Cell Biology, Drahomanov Str., 14/16, Lviv, 79005 Ukraine
| | - Oleh V. Stasyk
- Department of Molecular Genetics and Biotechnology, Institute of Cell Biology, Drahomanov Str., 14/16, Lviv, 79005 Ukraine
| | - Olena V. Dmytruk
- Department of Molecular Genetics and Biotechnology, Institute of Cell Biology, Drahomanov Str., 14/16, Lviv, 79005 Ukraine
| | - Kostyantyn V. Dmytruk
- Department of Molecular Genetics and Biotechnology, Institute of Cell Biology, Drahomanov Str., 14/16, Lviv, 79005 Ukraine
| | - Andriy A. Sibirny
- Department of Molecular Genetics and Biotechnology, Institute of Cell Biology, Drahomanov Str., 14/16, Lviv, 79005 Ukraine
- Department of Biotechnology and Microbiology, University of Rzeszow, Zelwerowicza 4, 35-601 Rzeszow, Poland
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Dmytruk KV, Ruchala J, Grabek-Lejko D, Puchalski C, Bulbotka NV, Sibirny AA. Autophagy-related gene ATG13 is involved in control of xylose alcoholic fermentation in the thermotolerant methylotrophic yeast Ogataea polymorpha. FEMS Yeast Res 2018; 18:4847886. [DOI: 10.1093/femsyr/foy010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2017] [Accepted: 02/08/2018] [Indexed: 01/16/2023] Open
Affiliation(s)
- Kostyantyn V Dmytruk
- Department of Molecular Genetics and Biotechnology, Institute of Cell Biology, Drahomanov Str., 14/16, Lviv 79005 Ukraine
| | - Justyna Ruchala
- Department of Biotechnology and Microbiology, University of Rzeszow, Zelwerowicza 4, Rzeszow 35–601 Poland
| | - Dorota Grabek-Lejko
- Department of Biotechnology and Microbiology, University of Rzeszow, Zelwerowicza 4, Rzeszow 35–601 Poland
| | - Czeslaw Puchalski
- Department of Biotechnology and Microbiology, University of Rzeszow, Zelwerowicza 4, Rzeszow 35–601 Poland
| | - Nina V Bulbotka
- Department of Molecular Genetics and Biotechnology, Institute of Cell Biology, Drahomanov Str., 14/16, Lviv 79005 Ukraine
| | - Andriy A Sibirny
- Department of Molecular Genetics and Biotechnology, Institute of Cell Biology, Drahomanov Str., 14/16, Lviv 79005 Ukraine
- Department of Biotechnology and Microbiology, University of Rzeszow, Zelwerowicza 4, Rzeszow 35–601 Poland
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Kata I, Semkiv MV, Ruchala J, Dmytruk KV, Sibirny AA. Overexpression of the genes PDC1 and ADH1 activates glycerol conversion to ethanol in the thermotolerant yeast Ogataea (Hansenula) polymorpha. Yeast 2017; 33:471-8. [PMID: 27256876 DOI: 10.1002/yea.3175] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Revised: 05/27/2016] [Accepted: 05/28/2016] [Indexed: 12/12/2022] Open
Abstract
Conversion of byproduct from biodiesel production glycerol to high-value compounds is of great importance. Ethanol is considered a promising product of glycerol bioconversion. The methylotrophic thermotolerant yeast Ogataea (Hansenula) polymorpha is of great interest for this purpose as the glycerol byproduct contains methanol and heavy metals as contaminants, and this yeast utilizes methanol and is relatively resistant to heavy metals. Besides, O. polymorpha shows robust growth on glycerol and produces ethanol from various carbon sources. The thermotolerance of this yeast is an additional advantage, allowing increased fermentation temperature to 45-48 °C, leading to increased rate of the fermentation process and a fall in the cost of distillation. The wild-type strain of O. polymorpha produces insignificant amounts of ethanol from glycerol (0.8 g/l). Overexpression of PDC1 coding for pyruvate decarboxylase enhanced ethanol production up to 3.1 g/l, whereas simultaneous overexpression of PDC1 and ADH1 (coding for alcohol dehydrogenase) led to further increase in ethanol production from glycerol. Moreover, the increased temperature of fermentation up to 45 °C stimulated the production of ethanol from glycerol used as the only carbon source up to 5.0 g/l, which exceeds the data obtained by methylotrophic yeast strains reported so far. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- Iwona Kata
- Department of Biotechnology and Microbiology, University of Rzeszow, Zelwerowicza 4, Rzeszow, 35-601, Poland
| | - Marta V Semkiv
- Department of Molecular Genetics and Biotechnology, Institute of Cell Biology, Lviv, 79005, Ukraine
| | - Justyna Ruchala
- Department of Biotechnology and Microbiology, University of Rzeszow, Zelwerowicza 4, Rzeszow, 35-601, Poland
| | - Kostyantyn V Dmytruk
- Department of Molecular Genetics and Biotechnology, Institute of Cell Biology, Lviv, 79005, Ukraine
| | - Andriy A Sibirny
- Department of Biotechnology and Microbiology, University of Rzeszow, Zelwerowicza 4, Rzeszow, 35-601, Poland.,Department of Molecular Genetics and Biotechnology, Institute of Cell Biology, Lviv, 79005, Ukraine
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Ruchala J, Kurylenko OO, Soontorngun N, Dmytruk KV, Sibirny AA. Transcriptional activator Cat8 is involved in regulation of xylose alcoholic fermentation in the thermotolerant yeast Ogataea (Hansenula) polymorpha. Microb Cell Fact 2017; 16:36. [PMID: 28245828 PMCID: PMC5331723 DOI: 10.1186/s12934-017-0652-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 02/23/2017] [Indexed: 11/16/2022] Open
Abstract
Background Efficient xylose alcoholic fermentation is one of the key to a successful lignocellulosic ethanol production. However, regulation of this process in the native xylose-fermenting yeasts is poorly understood. In this work, we paid attention to the transcriptional factor Cat8 and its possible role in xylose alcoholic fermentation in Ogataea (Hansenula) polymorpha. In Saccharomyces cerevisiae, organism, which does not metabolize xylose, gene CAT8 encodes a Zn-cluster transcriptional activator necessary for expression of genes involved in gluconeogenesis, respiration, glyoxylic cycle and ethanol utilization. Xylose is a carbon source that could be fermented to ethanol and simultaneously could be used in gluconeogenesis for hexose synthesis. This potentially suggests involvement of CAT8 in xylose metabolism. Results Here, the role of CAT8 homolog in the natural xylose-fermenting thermotolerant yeast O. polymorpha was characterized. The CAT8 ortholog was identified in O. polymorpha genome and deleted both in the wild-type strain and in advanced ethanol producer from xylose. Constructed cat8Δ strain isolated from wild strain showed diminished growth on glycerol, ethanol and xylose as well as diminished respiration on the last substrate. At the same time, cat8Δ mutant isolated from the best available O. polymorpha ethanol producer showed only visible defect in growth on ethanol. CAT8 deletant was characterized by activated transcription of genes XYL3, DAS1 and RPE1 and slight increase in the activity of several enzymes involved in xylose metabolism and alcoholic fermentation. Ethanol production from xylose in cat8Δ mutants in the background of wild-type strain and the best available ethanol producer from xylose increased for 50 and 30%, respectively. The maximal titer of ethanol during xylose fermentation was 12.5 g ethanol/L at 45 °C. Deletion of CAT8 did not change ethanol production from glucose. Gene CAT8 was also overexpressed under control of the strong constitutive promoter GAP of glyceraldehyde-3-phosphate dehydrogenase. Corresponding strains showed drop in ethanol production in xylose medium whereas glucose alcoholic fermentation remained unchanged. Available data suggest on specific role of Cat8 in xylose alcoholic fermentation. Conclusions The CAT8 gene is one of the first identified genes specifically involved in regulation of xylose alcoholic fermentation in the natural xylose-fermenting yeast O. polymorpha. Electronic supplementary material The online version of this article (doi:10.1186/s12934-017-0652-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Justyna Ruchala
- Department of Biotechnology and Microbiology, University of Rzeszow, Zelwerowicza 4, 35-601, Rzeszow, Poland
| | - Olena O Kurylenko
- Department of Molecular Genetics and Biotechnology, Institute of Cell Biology, Drahomanov Str., 14/16, Lviv, 79005, Ukraine
| | | | - Kostyantyn V Dmytruk
- Department of Molecular Genetics and Biotechnology, Institute of Cell Biology, Drahomanov Str., 14/16, Lviv, 79005, Ukraine
| | - Andriy A Sibirny
- Department of Biotechnology and Microbiology, University of Rzeszow, Zelwerowicza 4, 35-601, Rzeszow, Poland. .,Department of Molecular Genetics and Biotechnology, Institute of Cell Biology, Drahomanov Str., 14/16, Lviv, 79005, Ukraine.
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Choudhary J, Singh S, Nain L. Thermotolerant fermenting yeasts for simultaneous saccharification fermentation of lignocellulosic biomass. ELECTRON J BIOTECHN 2016. [DOI: 10.1016/j.ejbt.2016.02.007] [Citation(s) in RCA: 89] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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15
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Shalley Sharma, Sonia Sharma, Surender Singh, Lata, Anju Arora. Improving Yeast Strains for Pentose Hexose Co-fermentation: Successes and Hurdles. SPRINGER PROCEEDINGS IN ENERGY 2016. [DOI: 10.1007/978-81-322-2773-1_3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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16
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Zhang B, Zhang J, Wang D, Gao X, Sun L, Hong J. Data for rapid ethanol production at elevated temperatures by engineered thermotolerant Kluyveromyces marxianus via the NADP(H)-preferring xylose reductase-xylitol dehydrogenase pathway. Data Brief 2015; 5:179-86. [PMID: 26543879 PMCID: PMC4589838 DOI: 10.1016/j.dib.2015.08.038] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 08/24/2015] [Accepted: 08/25/2015] [Indexed: 01/02/2023] Open
Abstract
A thermo-tolerant NADP(H)-preferring xylose pathway was constructed in Kluyveromyces marxianus for ethanol production with xylose at elevated temperatures (Zhang et al., 2015 [25]). Ethanol production yield and efficiency was enhanced by pathway engineering in the engineered strains. The constructed strain, YZJ088, has the ability to co-ferment glucose and xylose for ethanol and xylitol production, which is a critical step toward enabling economic biofuel production from lignocellulosic biomass. This study contains the fermentation results of strains using the metabolic pathway engineering procedure. The ethanol-producing abilities of various yeast strains under various conditions were compared, and strain YZJ088 showed the highest production and fastest productivity at elevated temperatures. The YZJ088 xylose fermentation results indicate that it fermented well with xylose at either low or high inoculum size. When fermented with an initial cell concentration of OD600=15 at 37 °C, YZJ088 consumed 200 g/L xylose and produced 60.07 g/L ethanol; when the initial cell concentration was OD600=1 at 37 °C, YZJ088 consumed 98.96 g/L xylose and produced 33.55 g/L ethanol with a productivity of 0.47 g/L/h. When fermented with 100 g/L xylose at 42 °C, YZJ088 produced 30.99 g/L ethanol with a productivity of 0.65 g/L/h, which was higher than that produced at 37 °C.
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Affiliation(s)
- Biao Zhang
- School of Life Science, University of Science and Technology of China, Hefei, Anhui 230027, PR China
- Hefei National Laboratory for Physical Science at the Microscale, Hefei, Anhui 230026, PR China
| | - Jia Zhang
- School of Life Science, University of Science and Technology of China, Hefei, Anhui 230027, PR China
- Hefei National Laboratory for Physical Science at the Microscale, Hefei, Anhui 230026, PR China
| | - Dongmei Wang
- School of Life Science, University of Science and Technology of China, Hefei, Anhui 230027, PR China
- Hefei National Laboratory for Physical Science at the Microscale, Hefei, Anhui 230026, PR China
| | - Xiaolian Gao
- School of Life Science, University of Science and Technology of China, Hefei, Anhui 230027, PR China
- Department of Biology and Biochemistry, University of Houston, Houston, TX 77004-5001, USA
- Hefei National Laboratory for Physical Science at the Microscale, Hefei, Anhui 230026, PR China
| | - Lianhong Sun
- School of Life Science, University of Science and Technology of China, Hefei, Anhui 230027, PR China
- Hefei National Laboratory for Physical Science at the Microscale, Hefei, Anhui 230026, PR China
| | - Jiong Hong
- School of Life Science, University of Science and Technology of China, Hefei, Anhui 230027, PR China
- Hefei National Laboratory for Physical Science at the Microscale, Hefei, Anhui 230026, PR China
- Corresponding author at: School of Life Science, University of Science and Technology of China, Hefei, Anhui 230027, PR China. Tel.: +86 551 63600705; fax: +86 551 63601443.School of Life Science, University of Science and Technology of ChinaHefeiAnhui230027PR China
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17
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Zhang M, Jiang ST, Zheng Z, Li XJ, Luo SZ, Wu XF. Cloning, expression, and characterization of a novel xylose reductase fromRhizopus oryzae. J Basic Microbiol 2015; 55:907-21. [DOI: 10.1002/jobm.201400786] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2014] [Accepted: 01/22/2015] [Indexed: 11/07/2022]
Affiliation(s)
- Min Zhang
- Key Laboratory for Agricultural Products Processing of Anhui Province; School of Biotechnology and Food Engineering; Hefei University of Technology; Hefei Anhui Province P.R. China
| | - Shao-tong Jiang
- Key Laboratory for Agricultural Products Processing of Anhui Province; School of Biotechnology and Food Engineering; Hefei University of Technology; Hefei Anhui Province P.R. China
| | - Zhi Zheng
- Key Laboratory for Agricultural Products Processing of Anhui Province; School of Biotechnology and Food Engineering; Hefei University of Technology; Hefei Anhui Province P.R. China
| | - Xing-jiang Li
- Key Laboratory for Agricultural Products Processing of Anhui Province; School of Biotechnology and Food Engineering; Hefei University of Technology; Hefei Anhui Province P.R. China
| | - Shui-zhong Luo
- Key Laboratory for Agricultural Products Processing of Anhui Province; School of Biotechnology and Food Engineering; Hefei University of Technology; Hefei Anhui Province P.R. China
| | - Xue-feng Wu
- Key Laboratory for Agricultural Products Processing of Anhui Province; School of Biotechnology and Food Engineering; Hefei University of Technology; Hefei Anhui Province P.R. China
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18
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Genetic improvement of native xylose-fermenting yeasts for ethanol production. J Ind Microbiol Biotechnol 2014; 42:1-20. [DOI: 10.1007/s10295-014-1535-z] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Accepted: 11/02/2014] [Indexed: 12/27/2022]
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19
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Kurylenko OO, Ruchala J, Hryniv OB, Abbas CA, Dmytruk KV, Sibirny AA. Metabolic engineering and classical selection of the methylotrophic thermotolerant yeast Hansenula polymorpha for improvement of high-temperature xylose alcoholic fermentation. Microb Cell Fact 2014; 13:122. [PMID: 25145644 PMCID: PMC4145226 DOI: 10.1186/s12934-014-0122-3] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2014] [Accepted: 08/12/2014] [Indexed: 12/02/2022] Open
Abstract
Background The methylotrophic yeast, Hansenula
polymorpha is an industrially important microorganism, and
belongs to the best studied yeast species with well-developed tools for
molecular research. The complete genome sequence of the strain NCYC495 of
H. polymorpha is publicly available. Some
of the well-studied strains of H. polymorpha
are known to ferment glucose, cellobiose and xylose to ethanol at elevated
temperature (45 – 50°C) with ethanol yield from xylose significantly lower than
that from glucose and cellobiose. Increased yield of ethanol from xylose was
demonstrated following directed metabolic changes but, still the final ethanol
concentration achieved is well below what is considered feasible for economic
recovery by distillation. Results In this work, we describe the construction of strains of H. polymorpha with increased ethanol production
from xylose using an ethanol-non-utilizing strain
(2EthOH−) as the host. The transformants derived
from 2EthOH− overexpressing modified xylose reductase
(XYL1m) and native xylitol dehydrogenase
(XYL2) were isolated. These transformants
produced 1.5-fold more ethanol from xylose than the original host strain. The
additional overexpression of XYL3 gene coding
for xylulokinase, resulted in further 2.3-fold improvement in ethanol production
with no measurable xylitol formed during xylose fermentation. The best ethanol
producing strain obtained by metabolic engineering approaches was subjected to
selection for resistance to the known inhibitor of glycolysis, the anticancer
drug 3-bromopyruvate. The best mutant selected had an ethanol yield of 0.3 g/g
xylose and produced up to 9.8 g of ethanol/l during xylose alcoholic
fermentation at 45°C without correction for ethanol evaporation. Conclusions Our results indicate that xylose conversion to ethanol at elevated temperature
can be significantly improved in H.
polymorpha by combining methods of metabolic engineering and
classical selection.
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Affiliation(s)
| | | | | | | | | | - Andriy A Sibirny
- Department of Molecular Genetics and Biotechnology, Institute of Cell Biology, National Academy of Sciences of Ukraine, Drahomanov Street, 14/16, Lviv 79005, Ukraine.
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20
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Ethanol Production from Xylose by a RecombinantCandida utilisStrain Expressing Protein-Engineered Xylose Reductase and Xylitol Dehydrogenase. Biosci Biotechnol Biochem 2014; 75:1994-2000. [DOI: 10.1271/bbb.110426] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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21
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Improving ethanol and xylitol fermentation at elevated temperature through substitution of xylose reductase in Kluyveromyces marxianus. J Ind Microbiol Biotechnol 2013; 40:305-16. [PMID: 23392758 DOI: 10.1007/s10295-013-1230-5] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2012] [Accepted: 01/09/2013] [Indexed: 10/27/2022]
Abstract
Thermo-tolerant yeast Kluyveromyces marxianus is able to utilize a wide range of substrates, including xylose; however, the xylose fermentation ability is weak because of the redox imbalance under oxygen-limited conditions. Alleviating the intracellular redox imbalance through engineering the coenzyme specificity of NADPH-preferring xylose reductase (XR) and improving the expression of XR should promote xylose consumption and fermentation. In this study, the native xylose reductase gene (Kmxyl1) of the K. marxianus strain was substituted with XR or its mutant genes from Pichia stipitis (Scheffersomyces stipitis). The ability of the resultant recombinant strains to assimilate xylose to produce xylitol and ethanol at elevated temperature was greatly improved. The strain YZB014 expressing mutant PsXR N272D, which has a higher activity with both NADPH and NADH as the coenzyme, achieved the best results, and produced 3.55 g l(-1) ethanol and 11.32 g l(-1) xylitol-an increase of 12.24- and 2.70-fold in product at 42 °C, respectively. A 3.94-fold increase of xylose consumption was observed compared with the K. marxianus YHJ010 harboring KmXyl1. However, the strain YZB015 expressing a mutant PsXR K21A/N272D, with which co-enzyme preference was completely reversed from NADPH to NADH, failed to ferment due to the low expression. So in order to improve xylose consumption and fermentation in K. marxianus, both higher activity and co-enzyme specificity change are necessary.
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Kim OC, Suwannarangsee S, Oh DB, Kim S, Seo JW, Kim CH, Kang HA, Kim JY, Kwon O. Transcriptome analysis of xylose metabolism in the thermotolerant methylotrophic yeast Hansenula polymorpha. Bioprocess Biosyst Eng 2013; 36:1509-18. [PMID: 23380941 DOI: 10.1007/s00449-013-0909-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2012] [Accepted: 01/21/2013] [Indexed: 11/29/2022]
Abstract
The thermotolerant methylotrophic yeast Hansenula polymorpha is able to grow at elevated temperature up to 48 °C as one of a few yeast strains which are naturally capable of alcoholic fermentation of xylose, a pentose sugar abundant in lignocellulosic biomass. However, the current level of ethanol production from xylose by H. polymorpha is still very low compared to those of other xylose-fermenting strains. Therefore, it is necessary to analyze and remodel the xylose metabolism in H. polymorpha at the whole genome level to identify and overcome these limits. In the present study, the transcriptomes of H. polymorpha grown on xylose were compared with those of glucose-grown cells under both aerobic and microaerobic conditions. Approximately, two percent of H. polymorpha genes were either up- or down-regulated by more than two-fold during the growth on xylose. The majority of the up-regulated genes were involved in metabolism. Some genes involved in xylose metabolism, such as XYL1, XYL2, and TAL1 were also up-regulated, despite the fact that the differences in their induction level were only about three-fold. On the other hand, the majority of the down-regulated genes were involved in metabolism and cellular transport. Interestingly, some genes involved in glycolysis and ethanol fermentation were also repressed during growth on xylose, suggesting that these genes are good targets for engineering H. polymorpha to improve xylose fermentation.
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Affiliation(s)
- Oh Cheol Kim
- Systems and Synthetic Biology Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, 305-806, Korea
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23
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Consolidated bioprocessing and simultaneous saccharification and fermentation of lignocellulose to ethanol with thermotolerant yeast strains. Process Biochem 2012. [DOI: 10.1016/j.procbio.2012.05.004] [Citation(s) in RCA: 120] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Characterization of alcohol dehydrogenase 3 of the thermotolerant methylotrophic yeast Hansenula polymorpha. Appl Microbiol Biotechnol 2012; 96:697-709. [DOI: 10.1007/s00253-011-3866-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2011] [Revised: 12/20/2011] [Accepted: 12/22/2011] [Indexed: 10/14/2022]
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25
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Sohn MJ, Oh DB, Kim EJ, Cheon SA, Kwon O, Kim JY, Lee SY, Kang HA. HpYPS1 and HpYPS7 encode functional aspartyl proteases localized at the cell surface in the thermotolerant methylotrophic yeast Hansenula polymorpha. Yeast 2011; 29:1-16. [PMID: 22162039 DOI: 10.1002/yea.1912] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2011] [Accepted: 10/14/2011] [Indexed: 11/11/2022] Open
Abstract
In the present study, we functionally analysed two yapsin genes of the thermotolerant methylotrophic yeast Hansenula polymorpha, HpYPS1 and HpYPS7, for their roles in maintaining cell wall integrity and proteolytic processing. Both HpYPS1 and HpYPS7 proteins were shown to largely localize on the cell wall via glycosylphosphatidylinositol anchor. Heterologous expression of HpYPS1 completely restored all of the growth defects of the Saccharomyces cerevisiae yps1-deletion strains, while HpYPS7 expression exhibited a limited complementation effect on the S. cerevisiae yps7-deletion strain. However, different from S. cerevisiae, deletion of the HpYPS genes generated only minor influence on the sensitivity to cell wall stress. Likewise, HpYPS1 expression was significantly induced only by a subset of stressor agents, such as sodium dodecyl sulphate and tunicamycin. HpYps1p was shown to consist of two subunits, whereas HpYps7p comprises a single long polypeptide chain. Biochemical analysis revealed that HpYps1p has much stronger proteolytic cleavage activity at basic amino acids, compared to HpYps7p. Consistent with the much higher proteolytic activity and expression level of HpYps1p compared to HpYps7p, the sole disruption of HpYPS1 was sufficient in eliminating the aberrant proteolytic cleavage of recombinant proteins secreted by H. polymorpha. The results indicate that, although their roles in the maintenance of cell wall integrity are not critical, HpYps1p and HpYps7p are functional aspartic proteases at the cell surface of H. polymorpha. Furthermore, our data present the high biotechnological potential of H. polymorpha yps1-mutant strains as hosts useful for the production of secretory recombinant proteins.
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Affiliation(s)
- Min Jeong Sohn
- Department of Life Science, Research Centre for Biomolecules and Biosystems, Chung-Ang University, Seoul, Korea
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26
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Ubiyvovk VM, Ananin VM, Malyshev AY, Kang HA, Sibirny AA. Optimization of glutathione production in batch and fed-batch cultures by the wild-type and recombinant strains of the methylotrophic yeast Hansenula polymorpha DL-1. BMC Biotechnol 2011; 11:8. [PMID: 21255454 PMCID: PMC3032675 DOI: 10.1186/1472-6750-11-8] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2010] [Accepted: 01/22/2011] [Indexed: 11/25/2022] Open
Abstract
Background Tripeptide glutathione (gamma-glutamyl-L-cysteinyl-glycine) is the most abundant non-protein thiol that protects cells from metabolic and oxidative stresses and is widely used as medicine, food additives and in cosmetic industry. The methylotrophic yeast Hansenula polymorpha is regarded as a rich source of glutathione due to the role of this thiol in detoxifications of key intermediates of methanol metabolism. Cellular and extracellular glutathione production of H. polymorpha DL-1 in the wild type and recombinant strains which overexpress genes of glutathione biosynthesis (GSH2) and its precursor cysteine (MET4) was studied. Results Glutathione producing capacity of H. polymorpha DL-1 depending on parameters of cultivation (dissolved oxygen tension, pH, stirrer speed), carbon substrate (glucose, methanol) and type of overexpressed genes of glutathione and its precursor biosynthesis during batch and fed-batch fermentations were studied. Under optimized conditions of glucose fed-batch cultivation, the glutathione productivity of the engineered strains was increased from ~900 up to ~ 2300 mg of Total Intracellular Glutathione (TIG) or GSH+GSSGin, per liter of culture medium. Meantime, methanol fed-batch cultivation of one of the recombinant strains allowed achieving the extracellular glutathione productivity up to 250 mg of Total Extracellular Glutathione (TEG) or GSH+GSSGex, per liter of the culture medium. Conclusions H. polymorpha is an competitive glutathione producer as compared to other known yeast and bacteria strains (Saccharomyces cerevisiae, Candida utilis, Escherichia coli, Lactococcus lactis etc.) with good perspectives for further improvement especially for production of extracellular form of glutathione.
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Affiliation(s)
- Vira M Ubiyvovk
- Institute of Cell Biology NAS of Ukraine, Drahomanov Street, 14/16, Lviv, 79005 Ukraine
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27
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Santos Milessi TSD, Chandel AK, Freitas Branco RD, da Silva SS. Effect of Dissolved Oxygen and Inoculum Concentration on Xylose Reductase Production from <i>Candida guilliermondii</i> Using Sugarcane Bagasse Hemicellulosic Hydrolysate. ACTA ACUST UNITED AC 2011. [DOI: 10.4236/fns.2011.23033] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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28
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Cloning and characterization of thermotolerant xylitol dehydrogenases from yeast Pichia angusta. Appl Microbiol Biotechnol 2010; 88:1311-20. [DOI: 10.1007/s00253-010-2818-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2010] [Revised: 07/27/2010] [Accepted: 08/02/2010] [Indexed: 10/19/2022]
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29
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Trends and challenges in the microbial production of lignocellulosic bioalcohol fuels. Appl Microbiol Biotechnol 2010; 87:1303-15. [DOI: 10.1007/s00253-010-2707-z] [Citation(s) in RCA: 256] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2010] [Revised: 05/27/2010] [Accepted: 05/27/2010] [Indexed: 12/30/2022]
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30
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Construction of a β-glucosidase expression system using the multistress-tolerant yeast Issatchenkia orientalis. Appl Microbiol Biotechnol 2010; 87:1841-53. [DOI: 10.1007/s00253-010-2629-9] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2010] [Revised: 04/16/2010] [Accepted: 04/18/2010] [Indexed: 10/19/2022]
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31
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Effect of controlled oxygen limitation on Candida shehatae physiology for ethanol production from xylose and glucose. J Ind Microbiol Biotechnol 2010; 37:437-45. [DOI: 10.1007/s10295-009-0688-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2009] [Accepted: 12/22/2009] [Indexed: 10/20/2022]
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32
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Ishchuk OP, Voronovsky AY, Abbas CA, Sibirny AA. Construction ofHansenula polymorphastrains with improved thermotolerance. Biotechnol Bioeng 2009; 104:911-9. [DOI: 10.1002/bit.22457] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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33
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Cheon SA, Choo J, Ubiyvovk VM, Park JN, Kim MW, Oh DB, Kwon O, Sibirny AA, Kim JY, Kang HA. New selectable host-marker systems for multiple genetic manipulations based on TRP1, MET2 and ADE2 in the methylotrophic yeast Hansenula polymorpha. Yeast 2009; 26:507-21. [PMID: 19653331 DOI: 10.1002/yea.1701] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Interest has been increasing in the thermotolerant methylotrophic yeast Hansenula polymorpha as a useful system for fundamental research and applied purposes. Only a few genetic marker genes and auxotrophic hosts are yet available for this yeast. Here we isolated and developed H. polymorpha TRP1, MET2 and ADE2 genes as selectable markers for multiple genetic manipulations. The H. polymorpha TRP1 (HpTRP1), MET2 (HpMET2) and ADE2 (HpADE2) genes were sequentially disrupted, using an HpURA3 pop-out cassette in H. polymorpha to generate a series of new multiple auxotrophic strains, including up to a quintuple auxotrophic strain. Unexpectedly, the HpTRP1 deletion mutants required additional tryptophan supplementation for their full growth, even on complex media such as YPD. Despite the clearly increased resistance to 5-fluoroanthranilic acid of the HpTRP1 deletion mutants, the HpTRP1 blaster cassette does not appear to be usable as a counter-selection marker in H. polymorpha. Expression vectors carrying HpADE2, HpTRP1 or HpMET2 with their own promoters and terminators as selectable markers were constructed and used to co-transform the quintuple auxotrophic strain for the targeted expression of a heterologous gene, Aspergillus saitoi MsdS, at the ER, the Golgi and the cell surface, respectively.
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Affiliation(s)
- Seon Ah Cheon
- Department of Life Science, College of Natural Science, Chung-Ang University, Seoul 156-756, Korea
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Porro D, Branduardi P. Yeast cell factory: fishing for the best one or engineering it? Microb Cell Fact 2009; 8:51. [PMID: 19822015 PMCID: PMC2768682 DOI: 10.1186/1475-2859-8-51] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2009] [Accepted: 10/12/2009] [Indexed: 11/25/2022] Open
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35
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Van Vleet JH, Jeffries TW. Yeast metabolic engineering for hemicellulosic ethanol production. Curr Opin Biotechnol 2009; 20:300-6. [PMID: 19545992 DOI: 10.1016/j.copbio.2009.06.001] [Citation(s) in RCA: 190] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2009] [Revised: 05/30/2009] [Accepted: 06/03/2009] [Indexed: 11/19/2022]
Abstract
Efficient fermentation of hemicellulosic sugars is critical for the bioconversion of lignocellulosics to ethanol. Efficient sugar uptake through the heterologous expression of yeast and fungal xylose/glucose transporters can improve fermentation if other metabolic steps are not rate limiting. Rectification of cofactor imbalances through heterologous expression of fungal xylose isomerase or modification of cofactor requirements in the yeast oxidoreductase pathway can reduce xylitol production while increasing ethanol yields, but these changes often occur at the expense of xylose utilization rates. Genetic engineering and evolutionary adaptation to increase glycolytic flux coupled with transcriptomic and proteomic studies have identified targets for further modification, as have genomic and metabolic engineering studies in native xylose fermenting yeasts.
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Affiliation(s)
- J H Van Vleet
- Department of Bacteriology, University of Wisconsin-Madison, Madison, WI 53706, USA
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36
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Krahulec S, Klimacek M, Nidetzky B. Engineering of a matched pair of xylose reductase and xylitol dehydrogenase for xylose fermentation by Saccharomyces cerevisiae. Biotechnol J 2009; 4:684-94. [DOI: 10.1002/biot.200800334] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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37
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Bengtsson O, Hahn-Hägerdal B, Gorwa-Grauslund MF. Xylose reductase from Pichia stipitis with altered coenzyme preference improves ethanolic xylose fermentation by recombinant Saccharomyces cerevisiae. BIOTECHNOLOGY FOR BIOFUELS 2009; 2:9. [PMID: 19416504 PMCID: PMC2688486 DOI: 10.1186/1754-6834-2-9] [Citation(s) in RCA: 109] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/30/2009] [Accepted: 05/05/2009] [Indexed: 05/05/2023]
Abstract
BACKGROUND Xylose reductase (XR) and xylitol dehydrogenase (XDH) from Pichia stipitis are the two enzymes most commonly used in recombinant Saccharomyces cerevisiae strains engineered for xylose utilization. The availability of NAD+ for XDH is limited during anaerobic xylose fermentation because of the preference of XR for NADPH. This in turn results in xylitol formation and reduced ethanol yield. The coenzyme preference of P. stipitis XR was changed by site-directed mutagenesis with the aim to engineer it towards NADH-preference. RESULTS XR variants were evaluated in S. cerevisiae strains with the following genetic modifications: overexpressed native P. stipitis XDH, overexpressed xylulokinase, overexpressed non-oxidative pentose phosphate pathway and deleted GRE3 gene encoding an NADPH dependent aldose reductase. All overexpressed genes were chromosomally integrated to ensure stable expression. Crude extracts of four different strains overexpressing genes encoding native P. stipitis XR, K270M and K270R mutants, as well as Candida parapsilosis XR, were enzymatically characterized. The physiological effects of the mutations were investigated in anaerobic xylose fermentation. The strain overexpressing P. stipitis XR with the K270R mutation gave an ethanol yield of 0.39 g (g consumed sugars)-1, a xylitol yield of 0.05 g (g consumed xylose)-1 and a xylose consumption rate of 0.28 g (g biomass)-1 h-1 in continuous fermentation at a dilution rate of 0.12 h-1, with 10 g l-1 glucose and 10 g l-1 xylose as carbon sources. CONCLUSION The cofactor preference of P. stipitis XR was altered by site-directed mutagenesis. When the K270R XR was combined with a metabolic engineering strategy that ensures high xylose utilization capabilities, a recombinant S. cerevisiae strain was created that provides a unique combination of high xylose consumption rate, high ethanol yield and low xylitol yield during ethanolic xylose fermentation.
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Affiliation(s)
- Oskar Bengtsson
- Department of Applied Microbiology, Lund University, SE-221 00 Lund, Sweden
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Metabolic engineering of the initial stages of xylose catabolism in yeast for the purpose of constructing efficient producers of ethanol from lignocellulosics. CYTOL GENET+ 2008. [DOI: 10.1007/s11956-008-2011-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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