Results 211 to 220 of about 169,452 (247)

Identification and analysis of sugar transporters capable of co‐transporting glucose and xylose simultaneously

Biotechnology Journal, 2021
AbstractSimultaneous co‐fermentation of glucose and xylose is a key desired trait of engineered Saccharomyces cerevisiae for efficient and rapid production of biofuels and chemicals. However, glucose strongly inhibits xylose transport by endogenous hexose transporters of S. cerevisiae.
Nurzhan Kuanyshev, Anshu Deewan, Sujit Sadashiv Jagtap, Jingjing Liu, Balaji Selvam, Li‐Qing Chen, Diwakar Shukla, Christopher V. Rao, Yong‐Su Jin   +8 more
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Xylose Transport by the Anaerobic Thermophile Thermoanaerobacter ethanolicus and the Characterization of a D-Xylose-Binding Protein

Current Microbiology, 1998
Thermoanaerobacter ethanolicus is a xylose-utilizing thermophilic anaerobe that produces considerable amounts of ethanol. A protein in xylose-growing cells was solubilized from cell membranes by extraction with octyl-beta-glucoside. Internal peptide sequencing revealed that the protein was the product of a gene, xylF, encoding a putative D-xylose ...
, Erbeznik, , Ray, , Dawson, , Strobel
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Characterization of the effectiveness of hexose transporters for transporting xylose during glucose and xylose co‐fermentation by a recombinant Saccharomyces yeast

Yeast, 2004
AbstractWe have developed recombinant Saccharomyces yeasts that can effectively co‐ferment glucose and xylose to ethanol. However, these yeasts still ferment glucose more efficiently than xylose. The transport of xylose could be one of the steps limiting the fermentation of xylose.
Miroslav, Sedlak, Nancy W Y, Ho
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Understanding xylose transport in yeasts

Xylose constitutes the second major sugar fraction of the plant-derived lignocellulosic biomass, which is the most abundantly available and renewable feedstock for microbial fermentations. Hence, comprehensive utilization of xylose is crucial from the perspective of sustainable development of bio-based products, such as fuels, fine chemicals, and high ...
Atrayee Chattopadhyay, Mohor Mitra, Mrinal K. Maiti   +2 more
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d-Xylose transport in the chicken small intestine

Comparative Biochemistry and Physiology, 1967
Abstract 1. 1. d -Xylose enters rings of chicken small intestine, in vitro , significantly faster and to a greater extent than its epimer at carbon-2, d -lyxose. Final distribution of lyxose is indistinguishable from the extracellular space. 2. 2. Xylose, but not lyxose entry exhibits saturation kinetics. 3. 3.
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A kinetic analysis of d-xylose transport in rhodotorula glutinis

Biochimica et Biophysica Acta (BBA) - Biomembranes, 1978
The kinetics of D-xylose transport were studied in Rhodotorula glutinis. Analysis of the saturation isotherm revealed the presence of at least two carriers for D-xylose in the Rhodotorula plasma membrane. These two carriers exhibited Km values differing by more than an order of magnitude.
M E, Alcorn, C C, Griffin
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The kinetics and regulation of M-xylose transport in Candida utilis

World Journal of Microbiology and Biotechnology, 1993
Low-affinity (K m=67.6±3.2 mM) and high-affinity (K m=1.9±1.2 mM) D-xylose transport occur in Candida utilis grown, respectively, on D-glucose or D-xylose. Starvation of glucose-grown cells decreases the K m value (10.5±2.6 mm). The high-affinity system appearing during starvation required protein synthesis and it was inactivated when cells were ...
S G, Kilian, B A, Prior, J C, du Preez
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Transport of D-xylose and sugar space in baker's yeast

Folia Microbiologica, 1963
The cell volume fraction ofSaccharomyces cerevisiae accessible tod-xylose and other nonmetabolized sugars was found to correspond to 100% of cell water in resting yeast over a range of osmolarities of the medium. This sugar space was decreased to 60% by nitrogen deficiency and to 82% by phosphorus deficiency.
A, KOTYK, A, KLEINZELLER
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Molecular Simulations of Solute Transport in Xylose Isomerase Crystals

The Journal of Physical Chemistry B, 2008
Cross-linked enzyme crystals (CLECs) enclose an extensive regular matrix of chiral solvent-filled nanopores, via which ions and solutes travel in and out. Several cross-linked enzyme crystals have recently been used for chiral separation and as biocatalysts. We studied the dynamics of solute transport in orthorhombic d-xylose isomerase (XI) crystals by
Kourosh, Malek, Marc-Olivier, Coppens
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Kinetic studies on glucose and xylose transport in Saccharomyces cerevisiae

Applied Microbiology and Biotechnology, 2002
Zero trans-influx assays of glucose and xylose were performed using Saccharomyces cerevisiae to investigate transport characteristics under high and low glucose conditions. Under high glucose conditions, most glucose was transported by the low-affinity transporter.
W-J, Lee, M-D, Kim, Y-W, Ryu, L F, Bisson, J-H, Seo   +4 more
exaly   +3 more sources