SwePub
Sök i LIBRIS databas

  Utökad sökning

WFRF:(Bettiga A.)
 

Sökning: WFRF:(Bettiga A.) > Alcohols enhance th...

Alcohols enhance the rate of acetic acid diffusion in S. cerevisiae: biophysical mechanisms and implications for acetic acid tolerance

Lindahl, Lina, 1984 (författare)
Chalmers tekniska högskola,Chalmers University of Technology
Genheden, Samuel (författare)
Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology,University of Gothenburg
Faria-Oliveira, F. (författare)
Chalmers tekniska högskola,Chalmers University of Technology
visa fler...
Allard, Stefan, 1968 (författare)
Chalmers tekniska högskola,Chalmers University of Technology
Eriksson, Leif A, 1964 (författare)
Gothenburg University,Göteborgs universitet,Institutionen för kemi och molekylärbiologi,Department of Chemistry and Molecular Biology,University of Gothenburg
Olsson, Lisbeth, 1963 (författare)
Chalmers tekniska högskola,Chalmers University of Technology
Bettiga, Maurizio, 1978 (författare)
Chalmers tekniska högskola,Chalmers University of Technology
visa färre...
 (creator_code:org_t)
2018-01-01
2018
Engelska.
Ingår i: Microbial Cell. - : Shared Science Publishers OG. - 2311-2638. ; 5:1, s. 42-55
  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
Stäng  
  • Microbial cell factories with the ability to maintain high productivity in the presence of weak organic acids, such as acetic acid, are required in many industrial processes. For example, fermentation media derived from lignocellulosic biomass are rich in acetic acid and other weak acids. The rate of diffusional entry of acetic acid is one parameter determining the ability of microorganisms to tolerance the acid. The present study demonstrates that the rate of acetic acid diffusion in S. cerevisiae is strongly affected by the alcohols ethanol and n-butanol. Ethanol of 40 g/L and n-butanol of 8 g/L both caused a 65% increase in the rate of acetic acid diffusion, and higher alcohol concentrations caused even greater increases. Molecular dynamics simulations of membrane dynamics in the presence of alcohols demonstrated that the partitioning of alcohols to the head group region of the lipid bilayer causes a considerable increase in the membrane area, together with reduced membrane thickness and lipid order. These changes in physiochemical membrane properties lead to an increased number of water molecules in the membrane interior, providing biophysical mechanisms for the alcohol-induced increase in acetic acid diffusion rate. nbutanol affected S. cerevisiae and the cell membrane properties at lower concentrations than ethanol, due to greater and deeper partitioning in the membrane. This study demonstrates that the rate of acetic acid diffusion can be strongly affected by compounds that partition into the cell membrane, and highlights the need for considering interaction effects between compounds in the design of microbial processes.

Ämnesord

NATURVETENSKAP  -- Biologi -- Cellbiologi (hsv//swe)
NATURAL SCIENCES  -- Biological Sciences -- Cell Biology (hsv//eng)
NATURVETENSKAP  -- Biologi -- Biokemi och molekylärbiologi (hsv//swe)
NATURAL SCIENCES  -- Biological Sciences -- Biochemistry and Molecular Biology (hsv//eng)
NATURVETENSKAP  -- Biologi -- Mikrobiologi (hsv//swe)
NATURAL SCIENCES  -- Biological Sciences -- Microbiology (hsv//eng)

Nyckelord

ethanol
n-butanol
lignocellulose
inhibitors
molecular dynamics simulations
membrane
molecular-dynamics simulations
programmed cell-death
saccharomyces-cerevisiae
plasma-membrane
ethanol tolerance
stress-adaptation
intracellular ph
lipid-bilayers
force-field
weak
acids
Cell Biology
shra p
1989
applied microbiology and biotechnology
v30
p294
molecular dynamics simulations

Publikations- och innehållstyp

ref (ämneskategori)
art (ämneskategori)

Hitta via bibliotek

Till lärosätets databas

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy