Comparing the xylose reductase/xylitol dehydrogenase and xylose isomerase pathways in arabinose and xylose fermenting
Background Ethanolic fermentation of lignocellulosic biomass is a sustainable option for the production of bioethanol. This process would greatly benefit from recombinant Saccharomyces cerevisiae strains also able to ferment, besides the hexose sugar ...
Hahn-Hägerdal Bärbel +2 more
doaj +3 more sources
Comparison of the xylose reductase-xylitol dehydrogenase and the xylose isomerase pathways for xylose fermentation by recombinant
Background Two heterologous pathways have been used to construct recombinant xylose-fermenting Saccharomyces cerevisiae strains: i) the xylose reductase (XR) and xylitol dehydrogenase (XDH) pathway and ii) the xylose isomerase (XI) pathway.
Hahn-Hägerdal Bärbel +3 more
doaj +3 more sources
Fermentation of mixed glucose-xylose substrates by engineered strains of
Background In spite of the substantial metabolic engineering effort previously devoted to the development of Saccharomyces cerevisiae strains capable of fermenting both the hexose and pentose sugars present in lignocellulose hydrolysates, the ...
Klimacek Mario +5 more
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Structural insight into D-xylose utilization by xylose reductase from Scheffersomyces stipitis. [PDF]
AbstractLignocellulosic biomass, of which D-xylose accounts for approximately 35% of the total sugar, has attracted attention as a future energy source for biofuel. To elucidate molecular mechanism of D-xylose utilization, we determined the crystal structure of D-xylose reductase from Schefferzomyces stipitis (SsXR) at a 1.95 Å resolution.
Son HF, Lee SM, Kim KJ.
europepmc +4 more sources
Synthesis of Amines for Active Pharmaceutical Ingredients Using the Whole-Cell Factory Saccharomyces Cerevisae. [PDF]
This review highlights advances in engineering Saccharomyces cerevisiae for the sustainable biocatalytic production of pharmaceutically relevant amines, amino alcohols, amino acids, and complex alkaloids. It focuses on strategies to increase productivity, including enhanced enzyme expression, cofactor regeneration, precursor channeling, pathway ...
Kwiatos N, Ossel S, Mutti FG.
europepmc +2 more sources
The Weimberg pathway: an alternative for Myceliophthora thermophila to utilize d-xylose
Background With d-xylose being the second most abundant sugar in nature, its conversion into products could significantly improve biomass-based process economy. There are two well-studied phosphorylative pathways for d-xylose metabolism. One is isomerase
Defei Liu +5 more
doaj +1 more source
Two novel endophytic yeast strains, WP1 and PTD3, isolated from within the stems of poplar (Populus) trees, were genetically characterized with respect to their xylose metabolism genes. These two strains, belonging to the species Rhodotorula graminis and
Ping Xu, Renata Bura, Sharon L. Doty
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Background Pichia stipitis xylose reductase (Ps-XR) has been used to design Saccharomyces cerevisiae strains that are able to ferment xylose. One example is the industrial S. cerevisiae xylose-consuming strain TMB3400, which was constructed by expression
Röder Anja +4 more
doaj +1 more source
Background Over the last decades, many strategies to procure and improve xylose consumption in Saccharomyces cerevisiae have been reported. This includes the introduction of efficient xylose-assimilating enzymes, the improvement of xylose transport, or ...
Viktor C. Persson +4 more
doaj +1 more source
Balance of XYL1 and XYL2 expression in different yeast chassis for improved xylose fermentation
Reducing xylitol formation is an important step in engineering xylose reductase/xylitol dehydrogenase pathway for ethanol production from xylose in Saccharomyces cerevisiae. In this study, to balance the expression of XYL1 and mutant XYL2 encoding xylose
Jian eZha +5 more
doaj +1 more source

