The level of glucose-6-phosphate dehydrogenase activity strongly influences xylose fermentation and inhibitor sensitivity in recombinant Saccharomyces cerevisiae strains.
(2003) In Yeast 20(15). p.1263-1272- Abstract
- Disruption of the ZWF1 gene encoding glucose-6-phosphate dehydrogenase (G6PDH) has been shown to reduce the xylitol yield and the xylose consumption in the xylose-utilizing recombinant Saccharomyces cerevisiae strain TMB3255. In the present investigation we have studied the influence of different production levels of G6PDH on xylose fermentation. We used a synthetic promoter library and the copper-regulated CUP1 promoter to generate G6PDH-activities between 0% and 179% of the wild-type level. G6PDH-activities of 1% and 6% of the wild-type level resulted in 2.8- and 5.1-fold increase in specific xylose consumption, respectively, compared with the ZWF1-disrupted strain. Both strains exhibited decreased xylitol yields (0.13 and 0.19 g/g... (More)
- Disruption of the ZWF1 gene encoding glucose-6-phosphate dehydrogenase (G6PDH) has been shown to reduce the xylitol yield and the xylose consumption in the xylose-utilizing recombinant Saccharomyces cerevisiae strain TMB3255. In the present investigation we have studied the influence of different production levels of G6PDH on xylose fermentation. We used a synthetic promoter library and the copper-regulated CUP1 promoter to generate G6PDH-activities between 0% and 179% of the wild-type level. G6PDH-activities of 1% and 6% of the wild-type level resulted in 2.8- and 5.1-fold increase in specific xylose consumption, respectively, compared with the ZWF1-disrupted strain. Both strains exhibited decreased xylitol yields (0.13 and 0.19 g/g xylose) and enhanced ethanol yields (0.36 and 0.34 g/g xylose) compared with the control strain TMB3001 (0.29 g xylitol/g xylose, 0.31 g ethanol/g xylose). Cytoplasmic transhydrogenase (TH) from Azotobacter vinelandii has previously been shown to transfer NADPH and NAD+ into NADP+ and NADH, and TH-overproduction resulted in lower xylitol yield and enhanced glycerol yield during xylose utilization. Strains with low G6PDH-activity grew slower in a lignocellulose hydrolysate than the strain with wild-type G6PDH-activity, which suggested that the availability of intracellular NADPH correlated with tolerance towards lignocellulose-derived inhibitors. Low G6PDH-activity strains were also more sensitive to H2O2 than the control strain TMB3001. Copyright © 2003 John Wiley & Sons, Ltd. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/132793
- author
- Jeppsson, Marie LU ; Johansson, Björn LU ; Ruhdal-Jensen, P ; Hahn-Hägerdal, Bärbel LU and Gorwa-Grauslund, Marie-Francoise LU
- organization
- publishing date
- 2003
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- xylitol, redox balance, dehydrogenase, glucose-6-phosphate, xylose fermentation, Saccharomyces cerevisiae, synthetic promoter, inhibitors, NADPH, library
- in
- Yeast
- volume
- 20
- issue
- 15
- pages
- 1263 - 1272
- publisher
- John Wiley & Sons Inc.
- external identifiers
-
- wos:000186706600004
- pmid:14618564
- scopus:0345329541
- ISSN
- 1097-0061
- DOI
- 10.1002/yea.1043
- language
- English
- LU publication?
- yes
- id
- 0c9c6596-022a-424f-a1a1-682387e3dd78 (old id 132793)
- date added to LUP
- 2016-04-01 16:04:38
- date last changed
- 2025-04-04 14:24:50
@article{0c9c6596-022a-424f-a1a1-682387e3dd78,
abstract = {{Disruption of the ZWF1 gene encoding glucose-6-phosphate dehydrogenase (G6PDH) has been shown to reduce the xylitol yield and the xylose consumption in the xylose-utilizing recombinant Saccharomyces cerevisiae strain TMB3255. In the present investigation we have studied the influence of different production levels of G6PDH on xylose fermentation. We used a synthetic promoter library and the copper-regulated CUP1 promoter to generate G6PDH-activities between 0% and 179% of the wild-type level. G6PDH-activities of 1% and 6% of the wild-type level resulted in 2.8- and 5.1-fold increase in specific xylose consumption, respectively, compared with the ZWF1-disrupted strain. Both strains exhibited decreased xylitol yields (0.13 and 0.19 g/g xylose) and enhanced ethanol yields (0.36 and 0.34 g/g xylose) compared with the control strain TMB3001 (0.29 g xylitol/g xylose, 0.31 g ethanol/g xylose). Cytoplasmic transhydrogenase (TH) from Azotobacter vinelandii has previously been shown to transfer NADPH and NAD+ into NADP+ and NADH, and TH-overproduction resulted in lower xylitol yield and enhanced glycerol yield during xylose utilization. Strains with low G6PDH-activity grew slower in a lignocellulose hydrolysate than the strain with wild-type G6PDH-activity, which suggested that the availability of intracellular NADPH correlated with tolerance towards lignocellulose-derived inhibitors. Low G6PDH-activity strains were also more sensitive to H2O2 than the control strain TMB3001. Copyright © 2003 John Wiley & Sons, Ltd.}},
author = {{Jeppsson, Marie and Johansson, Björn and Ruhdal-Jensen, P and Hahn-Hägerdal, Bärbel and Gorwa-Grauslund, Marie-Francoise}},
issn = {{1097-0061}},
keywords = {{xylitol; redox balance; dehydrogenase; glucose-6-phosphate; xylose fermentation; Saccharomyces cerevisiae; synthetic promoter; inhibitors; NADPH; library}},
language = {{eng}},
number = {{15}},
pages = {{1263--1272}},
publisher = {{John Wiley & Sons Inc.}},
series = {{Yeast}},
title = {{The level of glucose-6-phosphate dehydrogenase activity strongly influences xylose fermentation and inhibitor sensitivity in recombinant Saccharomyces cerevisiae strains.}},
url = {{http://dx.doi.org/10.1002/yea.1043}},
doi = {{10.1002/yea.1043}},
volume = {{20}},
year = {{2003}},
}