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Endogenous NADPH-dependent aldose reductase activity influences product formation during xylose consumption in recombinant Saccharomyces cerevisiae

Träff, Karin LU ; Jeppsson, Marie LU ; Hahn-Hägerdal, Bärbel LU and Gorwa-Grauslund, Marie-Francoise LU (2004) In Yeast 21(2). p.141-150
Abstract
Introduction of the xylose pathway from Pichia stipitis into Saccharomyces cerevisiae enables xylose utilization in recombinant S. cerevisiae. However, xylitol is a major by-product. An endogenous aldo-keto reductase, encoded by the GRE3 gene, was expressed at different levels in recombinant S. cerevisiae strains to investigate its effect on xylose utilization. In a recombinant S. cerevisiae strain producing only xylitoll dehydrogenase (XDH) from P. stipitis and an extra copy of the endogenous xylulokinase (XK), ethanol formation from xylose was mediated by Gre3p, capable of reducing xylose to xylitol. When the GRE3 gene was overexpressed in this strain, the xylose consumption and ethanol formation increased by 29% and 116%, respectively.... (More)
Introduction of the xylose pathway from Pichia stipitis into Saccharomyces cerevisiae enables xylose utilization in recombinant S. cerevisiae. However, xylitol is a major by-product. An endogenous aldo-keto reductase, encoded by the GRE3 gene, was expressed at different levels in recombinant S. cerevisiae strains to investigate its effect on xylose utilization. In a recombinant S. cerevisiae strain producing only xylitoll dehydrogenase (XDH) from P. stipitis and an extra copy of the endogenous xylulokinase (XK), ethanol formation from xylose was mediated by Gre3p, capable of reducing xylose to xylitol. When the GRE3 gene was overexpressed in this strain, the xylose consumption and ethanol formation increased by 29% and 116%, respectively. When the GRE3 gene was deleted in the recombinant xylose-fermenting S. cerevisiae strain TMB3001 (which possesses xylose reductase and XDH from P. stipitis, and an extra copy of endogenous XK), the xylitol yield decreased by 49% and the ethanol yield increased by 19% in anaerobic continuous culture with a glucose/xylose mixture. Biomass was reduced by 31% in strains where GRE3 was deleted, suggesting that fine-tuning of GRE3 expression is the preferred choice rather than deletion. Copyright (C) 2003 John Wiley Sons, Ltd. (Less)
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organization
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type
Contribution to journal
publication status
published
subject
in
Yeast
volume
21
issue
2
pages
141 - 150
publisher
John Wiley & Sons
external identifiers
  • wos:000188977600005
  • scopus:1242284461
ISSN
1097-0061
DOI
10.1002/yea.1072
language
English
LU publication?
yes
id
e22365b6-1175-452e-a314-ef9172612e80 (old id 140510)
date added to LUP
2007-06-28 14:26:59
date last changed
2017-10-15 04:01:12
@article{e22365b6-1175-452e-a314-ef9172612e80,
  abstract     = {Introduction of the xylose pathway from Pichia stipitis into Saccharomyces cerevisiae enables xylose utilization in recombinant S. cerevisiae. However, xylitol is a major by-product. An endogenous aldo-keto reductase, encoded by the GRE3 gene, was expressed at different levels in recombinant S. cerevisiae strains to investigate its effect on xylose utilization. In a recombinant S. cerevisiae strain producing only xylitoll dehydrogenase (XDH) from P. stipitis and an extra copy of the endogenous xylulokinase (XK), ethanol formation from xylose was mediated by Gre3p, capable of reducing xylose to xylitol. When the GRE3 gene was overexpressed in this strain, the xylose consumption and ethanol formation increased by 29% and 116%, respectively. When the GRE3 gene was deleted in the recombinant xylose-fermenting S. cerevisiae strain TMB3001 (which possesses xylose reductase and XDH from P. stipitis, and an extra copy of endogenous XK), the xylitol yield decreased by 49% and the ethanol yield increased by 19% in anaerobic continuous culture with a glucose/xylose mixture. Biomass was reduced by 31% in strains where GRE3 was deleted, suggesting that fine-tuning of GRE3 expression is the preferred choice rather than deletion. Copyright (C) 2003 John Wiley Sons, Ltd.},
  author       = {Träff, Karin and Jeppsson, Marie and Hahn-Hägerdal, Bärbel and Gorwa-Grauslund, Marie-Francoise},
  issn         = {1097-0061},
  language     = {eng},
  number       = {2},
  pages        = {141--150},
  publisher    = {John Wiley & Sons},
  series       = {Yeast},
  title        = {Endogenous NADPH-dependent aldose reductase activity influences product formation during xylose consumption in recombinant Saccharomyces cerevisiae},
  url          = {http://dx.doi.org/10.1002/yea.1072},
  volume       = {21},
  year         = {2004},
}